MAINEHEALTH

Financials

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended September 30, 2025, highest compensation first.

Address and contacts

Address (IRS master file)

22 BRAMHALL ST, PORTLAND, ME 04102-3134

Principal officer (990 for 2024)

Andrew Mueller MD, 22 Bramhall Street, Portland, ME 04102

Signed the 990

Richard Bayman, CFO

Phone

(207) 661-7001

Website

www.mainehealth.org

Mission

See Part 1, Line 1 for the organization's mission.

Program accomplishments

• Patient CareMaineHealth Services (MaineHealth's parent) is the largest healthcare system in Maine, providing a full range of integrated healthcare services to patients in Maine and New Hampshire. MaineHealth provides healthcare services in a wide range of community-based settings and includes eight hospitals with 1,330 licensed beds, 131 ambulatory sites, 8 emergency room facilities, approximately 1,450 employed physicians, and other ancillary services. (Continued on Schedule O)(Continued from page 2 of 990, Line 4a) MaineHealth operates the following hospitals: MaineHealth Maine Medical Center, MaineHealth Pen Bay Hospital, MaineHealth Waldo Hospital, MaineHealth Lincoln Hospital, MaineHealth Franklin Hospital, MaineHealth Behavioral Health at Spring Harbor, MaineHealth Stephens Hospital, and MaineHealth Mid Coast Hospital. These health system resources offer expertise in multiple disciplines including emergency medicine, surgery, radiology, oncology, behavioral health, and level one trauma. Summary operating metrics for MaineHealth from fiscal year 2025 are included in the table below:Category CountHospital I/P Discharges 60,776 Hospital I/P Days 369,548 Swing Bed Days 4,737 Total Surgeries 70,308 ED Visits 247,548 The following is a summary of MaineHealth Services by hospital division:MaineHealth Maine Medical Center (MHMMC) MaineHealth Maine Medical Center has three campuses located in Portland, Biddeford, and Sanford, with an aggregate of 929 licensed beds. MaineHealth Maine Medical Center Portland (MHMMCP) is Maine's largest referral hospital and the state's only Level 1 trauma medical center, offering various services not available elsewhere in Maine. It is a teaching hospital affiliated with Tufts University School of Medicine. MHMMCP serves as a community hospital for Greater Portland with a present-day complex of more than one million square feet and 750 licensed beds. The hospital provides a wide range of medical and surgical care, intensive and coronary care, as well as obstetrical and pediatric services. In addition, MHMMCP has several specialty services, including: MaineHealth Barbara Bush Children's Hospital (MHBBCH); the Cancer Institute; the Cardiovascular Institute; Emergency Medicine; the Family Birth Center; the Joint Replacement Center; the MaineHealth Institute for Research (MHIR); and the Neuroscience Institute. MHBBCH, which operates as a department of MHMMCP, is Maine's only full-service children's hospital facility, offering family-centered services including specialized medical and surgical treatment of complex illnesses and injuries. MHBBCH uses state-of-the-art technology to provide advanced specialty services and personalized care to children that is responsive to their unique needs. MaineHealth Maine Medical Center Biddeford (MHMMCB) and MaineHealth Maine Medical Center Sanford (MHMMCS) offers a comprehensive array of medical care and services, including: emergency departments in Biddeford and Sanford, Maine; a multi-specialty physician services group providing comprehensive primary and specialty services; non-emergency walk-in care; centers for breast care, sleep disorders as well as wound and ostomy care; behavioral health and a wide range of diagnostic and rehabilitation services. MHMMCB and MHMMCS have approximately 27 physician practices located in Biddeford, Kennebunk, Saco and Sanford.MaineHealth Pen Bay Hospital (MHPBH) MaineHealth Pen Bay Hospital, with 99 licensed beds, provides the people of Mid Coast Maine with a continuum of both routine and specialty patient-centered medical services. Hospital services include an emergency department, obstetrics and infant care, cardiac care, cancer care, behavioral health, and a wide array of medical and specialty services.MaineHealth Waldo Hospital (MHWH)MaineHealth Waldo Hospital serves the healthcare needs of residents in Waldo County, Maine. A community hospital with 25 licensed beds, MHWH is designated as a Critical Access Hospital by the Federal and Maine State governments. Hospital services include an emergency department, cardiac care, cancer care, and a wide array of medical and specialty services. The hospital also operates five rural health centers, public health nursing and various educational programs. MaineHealth Lincoln Hospital (MHLH)MaineHealth Lincoln Hospital is designated as a Critical Access Hospital by the Federal and Maine State governments. MHLH has two campuses with an aggregate of 25 licensed beds. MaineHealth Miles Campus, serving Damariscotta and the surrounding communities, offers hospital services including: acute hospital care, intensive care, general and orthopedic surgical services, obstetrics and a broad spectrum of outpatient services, including Rural Health Clinics. The MaineHealth St. Andrews Campus, serving Boothbay Harbor and the surrounding communities, offers a fully-staffed urgent care center and a broad range of outpatient services. MaineHealth Franklin Hospital (MHFH)MaineHealth Franklin Hospital, with 25 licensed beds, serves the rural community of Greater Franklin County, boasting a population of 40,000. MHFH is able to offer care in more than 25 specialty areas, including emergency care, primary care, obstetrics & gynecology, and cardiology.MaineHealth Behavioral Health at Spring Harbor (MHBHSH)MaineHealth Behavioral Health at Spring Harbor provides both inpatient and outpatient mental health services. MHBHSH is located in Westbrook, Maine. It is Southern Maine's only nonprofit, private psychiatric hospital and a comprehensive provider of inpatient services for individuals who experience acute mental illness or dual disorder issues. MHBHSH consists of a licensed 100-bed facility set on 50 private acres and offers children, adolescents, and adults a comfortable and pleasant environment for psychiatric treatment. MHBHSH provides 24-hour information and referral, voluntary and involuntary hospitalization and comprehensive discharge planning. The Maine Behavioral Healthcare network is clinically integrated with other MaineHealth mental health providers, hospitals and primary care sites to ensure easy and timely access to treatment and safe and effective transitions between services. Through a unique collaboration with MaineHealth Maine Medical Center, MHBHSH can offer the most complete array of psychiatric treatment, physician training, and medical-research programs north of Boston. MaineHealth Stephens Hospital (MHSH)MaineHealth Stephens Hospital, located in Norway, Maine, is designated as a Critical Access Hospital by the Federal and Maine State governments, has 25 licensed beds in service. Services include: ambulance service; cancer care; diabetes care; emergency services; family birthplace; general surgery; hospitalist program; imaging services; joint replacement; laboratory; obstetrics and gynecology; orthopedics; pediatrics; physical rehabilitation; primary care; and various support groups.MaineHealth Mid Coast Hospital (MHMCH)MaineHealth Mid Coast Hospital, located in Brunswick, Maine, offers a full continuum of high-quality health care services to the Mid Coast Maine region. MHMCH operates a 93-bed community hospital with inpatient services for medical and surgical acute care, intensive care, women and infant services and psychiatric services. The hospital provides a broad spectrum of outpatient services to the community and has a Level 2 trauma facility and a 24-hour emergency department.
  Expenses $3,597,119,653 · grants $2,505,434 · revenue $4,439,977,338
• Teaching (Medical and Interprofessional Education Program)Educating and training healthcare professionals is vital to MaineHealth's mission. This is a critical component to the delivery of quality health care and developing the health care workforce. To that end we have established a number of robust training and education programs. MaineHealth's flagship hospital, Maine Medical Center (MMC), has a long history of educating medical students, residents, interprofessional providers and faculty. (Continued on Schedule O)(Continued from page 2 of 990, Line 4b) The Department of Medical Education manages multiple educational programs and resources. Education programs span undergraduate medical education, graduate medical education, and interprofessional provider education. Education services include the Hannaford Center for Safety, Innovation and Simulation, Library and Learning Commons, and the Journal of Maine Medical Center.In undergraduate medical education, the Tufts University School of Medicine (TUSM) - MaineHealth Maine Track Program, known as the "Maine Track", was established in 2008 and offers a unique and innovative curriculum, exposing students to rural practices and training in a major tertiary medical center. There are 40 matriculants in each TUSM class dedicated to the Maine Track. Much of the curriculum is based in Maine, particularly in the 2nd through 4th years of medical school. MHMMC developed a unique 9-month Longitudinal Integrated Clerkship offered at MHMMC and in 9 community hospital sites. 104 graduates of the Maine Track who have completed their residency programs are working in Maine as of 2025. Additionally, clerkship students from the University of New England College of Osteopathic Medicine rotate through MHMMC and MaineHealth sites annually. MHMMC is the Accreditation Council for Graduate Medical Education (ACGME) Sponsoring Institution for 18 residency programs, 2 rural tracks, 1 rural concentration and 18 fellowship programs. Currently there are approximately 359 physician residents and fellows. Between 40-45% of MHMMC's graduating residents and fellows stay and practice medicine in Maine. Our graduates also go on to outstanding fellowship programs. In addition to physician postgraduate education, MHMMC sponsors an accredited critical care advanced practice provider fellowship program and, along with Tufts University School of Dental Medicine, an Advanced Education in General Dentistry residency program.The Hannaford Center for Safety, Innovation and Simulation is a hub for interprofessional training at MaineHealth. Simulation advances patient safety by leveraging advanced technology as well as our simulated patient program to realistically recreate clinical scenarios to enable teams to practice and test and improve their clinical systems. Events occur both at our state-of-the-art 15,000 square-foot training center and "in situ" in clinical settings across Maine.Significant FY25 accomplishments include: Undergraduate Medical Education-Eleven of the 41 TUSM-MaineHealth Maine Track medical students who graduated in 2025 remained in Maine to complete their residency.-Successful continuation of an Art in Medicine elective class for medical students in partnership with Portland Museum of Art to emphasize practicing perspective, curiosity and stress tolerance that was highly successful and highlighted in the local newspaper.-Successful continuation of award-winning medical education pathway program, Inside Medicine, hosts up to 250 high school students interested in biology and medicine across Maine over the course of the school year through five monthly virtual sessions. This program was awarded the Association of American Medical College's Group on Regional Medical Campuses 2025 annual Community Star Award in recognition of the positive impact to the local community.-In collaboration with the Simulation Center, we hosted Doc4aDay, a community outreach program designed to spark interest in healthcare careers among high school students who show academic promise but may also experience barriers. Twenty-seven students participated, with support from staff, medical students, workforce development, and physicians. Graduate Medical Education (GME)-There are six academic tracks, Educator, Research, Healthcare Administration and Leadership, and Innovation, open to residents and fellows to acquire additional training.-MHMMC is a founding member of the state-wide "Maine Rural GME Education (MERGE) Collaborative", funded by the State of Maine, that has an infrastructure of rural GME electives across Maine. There are 36 different rural GME electives in 13 different specialties. -In 2025 GME received three HRSA grants to support GME training in rural settings (rural family medicine, rural obstetrics training, addiction medicine). Advanced Practice Provider Residency Program-The Advanced Practice Provider Critical Care Residency program (APP) was initiated in October 2021 with two APP residents. In 2023 it became the first accredited APP residency in Maine and the 10th in the nation to be accredited with the Advanced Practice Provider Fellowship Association (APPFA) through the American Nurses Credentialing Center. To date, twelve APP fellows have successfully completed the program. Nine of the twelve (75%) have been hired to Maine Medical Center ICU positions. -In FY25, the APP Education Office facilitated approximately 344 APP student placements within MaineHealth. Students from 39 institutions of higher education rotated through the MaineHealth system.Simulation-In collaboration with the HRSA-funded Rural Maternity and Obstetrics Management Strategies (RMOMS) program, the Hannaford Center for Safety, Innovation and Simulation (Sim Center) has enrolled seven hospitals in Maine Obstetric Medical Simulation (MOMSim 2.0), a telesim supported, locally driven, on-going obstetrical emergency simulation program at 12 hospitals across Maine. In addition, the team developed MOMSim ED, to support community emergency room teams to remain ready to safely deliver babies. The pilot site will launch in April 2026.-The Sim Center has partnered with nursing education to develop the first use cases of virtual and augmented reality simulation to more easily extend training across geographical areas. The Neonatal Simulation Team received a multimillion-dollar NIH grant to evaluate utilization of Holobaby, an augmented reality neonatal simulator, in the Maine Ongoing Outreach Simulation Program (MOOSE).-The Sim Center continues to expand train-the-trainer simulation faculty development via an annual Advanced Debriefing workshop, 3-day Simulation Instructor Course, Simulation Production Workshop and one day accelerated Simulation Instructor Course. We trained more than 70 interprofessional educators with these courses in 2025. -The Sim Center continues to work with Workforce Development to offer programs exposing Maine youth to healthcare careers through our Doc4aDay program (offered twice in 2025) and a monthly interactive simulation experience open to high school classes.-The simulation center conducted more than 564 events for more than 5875 participants in FY25.Journal of Maine Medical Center-The Journal of Maine Medical Center published two issues in 2025 containing 36 articles, with the Summer issue focused on tick-borne diseases. The Journal had a total of 27,801 article downloads from 175 countries.
  Expenses $182,620,489 · revenue $22,226,224
• ResearchResearch is a core component of the MaineHealth mission and essential to the delivery of quality health care in the future. MaineHealth Institute for Research (MHIR) is the research arm of MaineHealth. MHIR supports and encourages a broad spectrum of research, ranging from basic laboratory-based research to translational and clinical research, to population and health services research. The institute has four scientific centers: the Center for Applied Science & Technology, the Center for Clinical & Translational Science, (Continued on Schedule O)(Continued from page 2 of 990, Line 4c) the Center for Interdisciplinary Population & Health Research, and the Center for Molecular Medicine. In 2025, MHIR had $23.1M in grant funding and received 22 new grants, allowing the institute's clinical and biomedical researchers to contribute to nationally and internationally-recognized scientific research. In addition, over 250 clinical trial studies took place with the top areas of focus in Oncology, Neurology, and Cardiology. Notably in 2025, MHIR investigators and physician scientists secured several major grants to advance cancer research, expand pediatric clinical trials across Maine by joining a national research network, and enhance neonatal outcomes in rural communities. Other 2025 highlights included: 247 scientific articles published and over 1,159 biospecimens were distributed by the institute's BioBank Tissue Repository.
  Expenses $46,016,061 · grants $3,617,509 · revenue $27,816,504

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in September, so each return is due on the 15th day of the 5th month after that.

IRS record

EIN

01-0238552

Tax-exempt status

501(c)(3): Charitable, religious, educational or scientific organization

Foundation status

Hospital or medical research organization

Donations deductible (Pub 78)

Public charity, 50% deduction limit

Exempt since

1958

Accounting year ends

September

Files

Form 990 or 990-EZ

Category (NTEE)

Health care (E220)

Assets (IRS master file)

$4,578,082,842

Income (IRS master file)

$5,274,972,377

Filing history

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 01-0238552).

Questions about MAINEHEALTH

What is the EIN of MAINEHEALTH?

The employer identification number (EIN) of MAINEHEALTH is 01-0238552.

Is MAINEHEALTH tax-exempt?

Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1958.

Are donations to MAINEHEALTH tax-deductible?

Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).

Which annual return does MAINEHEALTH file?

Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.

When is the next return of MAINEHEALTH due?

The return for tax year 2025 (the year ending September 30, 2026) is due February 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.

When did MAINEHEALTH last file with the IRS?

The latest return in the IRS public files is the 990 for the year ended September 2025.

Who is the principal officer of MAINEHEALTH?

The 990 for the year ended September 30, 2025 names Andrew Mueller MD.

Who are the officers and directors of MAINEHEALTH?

The 990 for the year ended September 30, 2025 lists 35 people; 15 received compensation from the organization, the highest $2,556,171 (Andrew Mueller MD, CEO and President).

How much revenue does MAINEHEALTH have?

On its 990 for the year ended September 30, 2025 it reported revenue of $4,705,659,409, expenses of $4,519,720,513 and total assets of $4,578,082,842 at year end.

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