Nonprofit · EIN 48-0840415
RIORDAN CLINIC INC
Tax-exempt · WICHITA, KS 67219
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2024 | 990 | $6,735,681 | $6,209,562 | $526,119 | $3,777,043 | $1,190,101 | $2,586,942 |
| December 31, 2023 | 990 | $7,290,398 | $7,619,738 | -$329,340 | $3,455,153 | $1,421,440 | $2,033,713 |
Financial details: 990 for the year ended December 31, 2024
Revenue
- Contributions, gifts and grants
- $1,105,328
- Program service revenue
- $5,021,927
- Investment income
- $59,450
- Net gain from sales of assets
- $23,200
- Net income from sales of inventory
- $543,843
- Other revenue
- $548,976
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $183,000
- Other salaries and wages
- $2,594,514
- Salaries, compensation and benefits (total)
- $3,271,694
- Professional fundraising fees
- $0
- Legal fees
- $21,562
- Accounting fees
- $124,278
- Occupancy
- $373,491
- Travel
- $42,525
- Depreciation
- $128,358
- Program services (functional)
- $5,171,739
- Management and general (functional)
- $1,037,823
Balance sheet and other
- Total assets, start of year
- $3,455,153
- Total assets, end of year
- $3,777,043
- Total liabilities, end of year
- $1,190,101
- Net assets, end of year
- $2,586,942
- Land, buildings and equipment
- $937,100
- Net assets without donor restrictions
- $2,086,942
- Net assets with donor restrictions
- $500,000
- Gross receipts
- $7,472,168
- Employees
- 40
- Volunteers
- 8
- Year formed
- 1975
- State of legal domicile
- KS
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 December 31, 2024, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| RON HUNNINGHAKE | SECRETARY Trustee or director, Officer | 40 | $183,000 |
| VERNE HARNISH | BOARD MEMBER Trustee or director, Officer | 1 | $0 |
| THOMAS LEVY MD | BOARD MEMBER Trustee or director | 1 | $0 |
| MICHAEL STEWART | CEO Officer | 40 | $0 |
990 for the year ended December 31, 2023: 5 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| RON HUNNINGHAKE | CHIEF MED OF Trustee or director, Officer | 40 | $183,000 |
| STEVE FLESHER | CHIEF EXEC O Officer | 40 | $150,000 |
| MICHAEL STEWART | CHIEF OPER. Officer | 40 | $110,000 |
| VERNE HARNISH | VICE CHAIR Trustee or director, Officer | 1 | $0 |
| THOMAS LEVY MD | DIRECTOR Trustee or director | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 3100 N HILLSIDE AVE, WICHITA, KS 67219-3904
- Principal officer (990 for 2024)
- RON HUNNINGHAKE, 3100 N HILLSIDE, WICHITA, KS 67219
- Signed the 990
- RON HUNNINGHAKE, SECRETARY
- Phone
- (316) 682-3100
- Website
- WWW.RIORDANCLINIC.ORG
- Return prepared by
- SWINDOLL JANZEN HAWK & LOYD LLC
Mission
TO PROVIDE MEDICAL RESEARCH AND EDUCATION AND TO SERVE IN WAYS THAT STIMULATES AN EPIDEMIC OF HEALTH AMONG THOSE INTERESTED IN IMPROVING THEIR WELL-BEING.
Program accomplishments
- RESEARCH: AT THE HEART OF THE RIORDAN CLINIC'S DAY-TO-DAY WORK AND LONG-TERM VISION IS THE RIORDAN CLINIC RESEARCH INSTITUTE. CONSISTING OF A SMALL BUT DEDICATED GROUP OF SCIENTISTS WHO ARE PASSIONATE ABOUT THEIR WORK, THE RIORDAN CLINIC RESEARCH INSTITUTE FOCUSES RESEARCH IN AREAS OF NUTRITIONAL MEDICINE AND NATURAL THERAPEUTICS. BECAUSE OF THE CLOSE RELATIONSHIP BETWEEN OUR RESEARCH TEAM AND THE PHYSICIANS AT THE RIORDAN CLINIC, WE ARE ABLE TO TARGET OUR RESEARCH TOWARD INNOVATIONS THAT WILL BE DIRECTLY BENEFICIAL TO RIORDAN CLINIC PATIENTS. THE RCRI OPERATES INDEPENDENTLY OF SPECIAL INTERESTS: IT NEITHER SOLICITS NOR ACCEPTS TAX-DERIVED FUNDS. ALL OF ITS RESEARCH FUNDING COMES FROM PRIVATE DONATIONS FROM INDIVIDUALS,CORPORATIONS, AND FOUNDATIONS. RESULTS OF THE RCRI'S RESEARCH ARE PRESENTED DURING LECTURES AND AT THE CONFERENCES, PUBLISHED IN PEER- REVIEWED JOURNALS, AND DESCRIBED ON THE CLINICS'S WEBSITE. THE RIORDAN CLINIC RESEARCH INSTITUTE WORKS TO DEVELOP NUTRIENT-BASED THERAPIES THAT RESOLVE PATHOLOGY WITHOUT HARMING NORMAL TISSUES. WE HAVE LONG BEEN A LEADER IN RESEARCH CONCERNING THE USE OF VITAMIN C IN CANCER THERAPY, AND HAVE EXTENSIVE EXPERIENCE IN DEVELOPING ALTERNATIVE THERAPIES FOR CANCER. OUR RESEARCH IN 2022 FOCUSED ON THE FOLLOWING AREAS (A MORE IN DEPTH REPORT IS AVAILABLE BY REQUEST): -EFFECTS OF MICRONUTRIENT SUPPLEMENTATION ON CONCENTRATIONS OF VITAMINS AND MINERALS, INFLAMMATION AND CARDIOVASCULAR RISK. -EFFECT OF HIGH DOSE VITAMIN C ON EPSTEIN-BARR VIRAL INFECTION. -THE RIORDAN CLINIC INTRAVENOUS VITAMIN C PROTOCOL AND BACKGROUND RESEARCH. -THE ROLE OF MITOCHONDRIA IN CANCER AND OTHER CHRONIC DISEASES. BIOENERGETICS OF HUMAN CANCER CELLS AND NORMAL CELLS DURING PROLIFERATION AND DIFFERENTIATION. -MODULATION OF CYTOKINES IN CANCER PATIENTS BY INTRAVENOUS ASCORBATE THERAPY. -BACTERIAL EXTRACTS: BIOLOGICAL RESPONSE MODIFIERS BASED ON BACTERIAL CELL WALL CARBOHYDRATES. CLINIC: AT RIORDAN CLINIC, WE WORK WITH YOU, AS A CO-LEARNER, TO RESTORE, IMPROVE, OR MAINTAIN YOUR HEALTH. WE BELIEVE IN REAL HEALTH, AND BY UNDERSTANDING YOUR INDIVIDUAL BIOCHEMICAL MAKE-UP WE ARE ABLE TO CREATE A UNIQUE HEALTH PATH FOR YOU. WE FOCUS ON NUTRITION THROUGH NUTRIENT TESTING AND WE ARE DEDICATED TO RESEARCH. THROUGH TESTING, THERAPIES, SERVICES AND NUTRIENTS WE WILL INDIVIDUALIZE A JOURNEY TO ENSURE THAT YOU FEEL YOUR ABSOLUTE BEST. THE RIORDAN CLINIC HAS CARED FOR INDIVIDUALS WITH A FOCUS ON HEALTH, RATHER THAN SICKNESS. WE BELIEVE IN THE IMPORTANCE OF LOOKING AT THE ROOT CAUSE OF ILLNESS, RATHER THAN TREATING SYMPTOMS. WE SUCCESSFULLY TREAT A WIDE VARIETY OF SUSTAINED ILLNESSES INCLUDING, BUT NOT LIMITED TO: CANCER, HEART DISEASE, CHRONIC FATIGUE SYNDROME, FIBROMYALGIA, AND DIABETES. SOME OF OUR MOST ENCOURAGING SUCCESS STORIES ARE WITH PATIENTS WHO HAVE A VARIETY OF LONG-TERM SYMPTOMS, BUT HAVE BEEN UNABLE TO GET A DIAGNOSIS. WE SEEK TO IDENTIFY THE UNDERLYING CAUSES OF ILLNESS AND CORRECT THEM USING NUTRIENT BALANCING AND OTHER THERAPIES. SYMPTOMS LIKE FATIGUE, RASH, CONSTIPATION, STIFFNESS, SWELLING, DEPRESSION, AND MANY OTHERS, ARE THE MANIFESTATION OF AN UNBALANCED CHEMISTRY WITHIN THE BODY. AT THE RIORDAN CLINIC, WE KNOW THAT THE NUTRIENTS IN OUR BODY CONTROL OUR CHEMISTRY, AND IF OUR INVENTORY IS LOW OR IN EXCESS OF SOME NUTRIENTS, SYMPTOMS ARE INEVITABLE. FOR THIS REASON, OUR PATIENTS, CALLED CO-LEARNERS, START WITH A BASELINE NUTRIENT INVENTORY PANEL ORDERED SO THAT THE DOCTORS CAN LEARN MORE ABOUT THEIR INDIVIDUALITY. OUR APPROACH IS TO TREAT THE WHOLE PERSON, BEGINNING WITH A THOROUGH REVIEW OF MEDICAL HISTORY AND A COMPREHENSIVE PATIENT EVALUATION. THIS YIELDS A HIGHLY CUSTOMIZED HOLISTIC TREATMENT PLAN THAT WILL PUT YOU ON THE PATH TO BETTER HEALTH. AS A PATIENT AT THE RIORDAN CLINIC, YOU WILL BE FULLY INVOLVED IN THE DISCOVERY PROCESS OF GETTING WELL. BY TAKING AN ACTIVE ROLE IN YOUR RECOVERY, YOU WILL UNDERSTAND THE SYSTEMIC CAUSES OF YOUR ILLNESS BETTER, THUS ENACTING A POSITIVE IMPACT ON YOUR HEALTH.Expenses $4,026,974 · revenue $3,334,270
- LABORATORY: THE ON-SITE RIORDAN CLINIC LABORATORY WAS ESTABLISHED IN 1975, ORIGINALLY AS THE BIO-CENTER LAB. OUR LAB HAS DEDICATED ITSELF TO PROVIDING ACCURATE CLINICAL ANALYSIS FOCUSING ON NUTRITIONAL LEVELS. OUR SPECIALTIES INCLUDE TESTING FOR PYRROLES, HISTAMINE, CYTOTOXIC FOOD SENSITIVITIES, PARASITOLOGY, ANALYSIS OF RED BLOOD CELL FATTY ACIDS AND MINERALS, ALONG WITH MANY VITAMINS. WE HAVE DONE EXHAUSTIVE RESEARCH TO DETERMINE WHICH TEST METHODOLOGIES AND SPECIMEN TYPES WILL YIELD THE MOST CLINICALLY SIGNIFICANT RESULTS. WE HAVE BEEN PERFORMING AND INNOVATING MANY OF OUR SPECIALTY TESTS FOR MORE THAN 30 YEARS. OUR HISTAMINE AND PYRROLES TESTS HAVE BEEN OFFERED FOR 38 YEARS AND ARE STILL TWO OF THE MOST REQUESTED REFERENCE TESTS WE PERFORM. IN FACT, WE ARE PROUD TO BE THE LABORATORY THAT MANY OTHER LABS CHOOSE TO DO THEIR PYRROLES TESTING. THE FUNCTION OF OUR LABORATORY IS TWO-FOLD: TO PROVIDE IN-HOUSE PATIENTS WHO COME FOR TREATMENT WITH ACCURATE STATE OF THE ART LABORATORY ANALYSIS AND TO PROVIDE DIAGNOSTIC SERVICES FOR PHYSICIANS AND HOSPITALS THROUGHOUT THE COUNTRY. IN BOTH CASES, WE PROVIDE DOCTORS RELEVANT BIOCHEMICAL IMPAIRMENT INFORMATON TO INCREASE DIAGNOSTIC ACCURACY.Expenses $1,098,496 · revenue $1,654,845
- EDUCATION: THE RIORDAN CLINIC HAS A VARIETY OF EVENTS FROM OUR BI-ANNUAL IVC & CANCER SYMPOSIUMS TO LUNCH AND LECTURES. OUR APPROACH IS ONE OF INTEGRATIVE MEDICINE, WHERE WE MAXIMIZE THE BENEFITS OF BOTH ORTHOMOLECULAR AND CONVENTIONAL MEDICINE TO ACHIEVE RESULTS. SINCE CO-LEARNERS AT THE RIORDAN CLINIC HAVE A VESTED INTEREST IN THE RESEARCH AND DISCOVERY PROCESS, THEY ATTAIN THE ULTIMATE FORM OF HEALING: HOPE. THE RIORDAN CLINIC SYMPOSIUM (HELD BI-ANNUALLY, THE NEXT IS SCHEDULED FOR FALL 2023) EXPLORES THE UNDERLYING CAUSES OF CANCER, WITH THE INTENT OF ELUCIDATING NEW WAYS TO TREAT THE DISEASE IN A NON-TOXIC FASHION. ACADEMY SPEAKERS REPRESENT A GROWING FIELD OF CANCER PIONEERS WHO HAVE FOUND THAT IVC IS A POWERFUL ADJUNCT IN THE CARE OF CANCER PATIENTS. ALTHOUGH INTENDED FOR MEDICAL PROFESSIONALS, THE LECTURES ALSO SERVE TO INFORM INTERESTED "CANCER CO- LEARNERS" WHO SEEK HELP FOR THEMSELVES AND THEIR FRIENDS AND FAMILY THROUGH A BETTER QUALITY OF LIFE. THE RIORDAN CLINIC IVC ACADEMY IS PACKED WITH TWO DAYS OF LECTURES, CONVERSATIONS, AND CAMARADERIE WITH OTHER MEDICAL PROFESSIONALS WHO USE HIGH-DOSE VITAMIN C IN THEIR PRACTICES. ON FRIDAY THERE WILL BE MULTIPLE SPEAKERS LAYING OUT THE HISTORY AND STEPS BEHIND THE PROPER USE OF THE RIORDAN IVC PROTOCOL. THE ACADEMY LECTURES WILL SERVE AS AN EXCELLENT OPPORTUNITY FOR IVC PRACTITIONERS TO BECOME MORE INVOLVED WITH IVC THERAPY, ADJUNCT THERAPIES AND EXPOUND NEW APPROACHES TO TREATING CANCER. LECTURES CONTINUE INTO SATUDAY AND WE WILL CONCLUDE THE EVENT WITH THE RIORDAN IVC CERTIFICATION TEST, WHICH WILL BE GRADED AND RETURNED BEFORE DISMISSAL. THE RIORDAN RESOURCE LIBRARY ORIGINALLY FUNDED BY THE MABEE FAMILY, PROVIDES COMPREHENSIVE INFORMATION ABOUT THE HUMAN CONDITION. THE LIBRARY IS AVAILABLE TO ANYONE WHO WISHES TO EXPAND THEIR KNOWLEDGE ON A PARTICULAR MEDICAL SUBJECT. SOME OF THE RESOURCES AVAILABLE TO ASSIST YOU IN YOUR RESEARCH INCLUDE MORE THAN 3,000 BOOKS, 1,200 VIDEOS AND 3,200 AUDIO TAPES. ADDITIONALLY, OUR JOURNAL ARTICLE COLLECTION CONTINUES TO GROW AS NEW RESEARCH IN VARIOUS FIELDS BREAKS TO THE SURFACE. MORE THAN 10,000 ARTICLES HAVE BEEN COLLECTED FROM SOURCES OUTSIDE OUR LIBRARY. AS A RESEARCH LIBRARY, YOU'RE WELCOME TO UTILIZE OUR COLLECTION SOLEY ON SITE. SUPPLEMENT YOUR RESEARCH AND FINDINGS WITH INTERNET ACCESS. THE MAYBEE LIBRARY WILL CONTINUE TO BE CUTTING EDGE BASED ON PRIVATE DONATIONS FROM INDIVIDUALS, CORPORATIONS, AND FOUNDATIONS. SINCE CO-LEARNERS ARE ENCOURAGED TO SEEK OUT INFORMATION ABOUT THEIR INDIVIDUAL NEEDS, THE RIORDAN RESOURCE LIBRARY PLAYS A SIGNIFICANT ROLE IN THAT PROCESS.Expenses $46,269 · revenue $32,812
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 December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | Not on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 48-0840415
- 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
- 1977
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $3,777,043
- Income (IRS master file)
- $7,472,168
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2024 | $6,735,681 | $6,209,562 | $3,777,043 | XML |
| 990 | December 2023 | $7,290,398 | $7,619,738 | $3,455,153 | XML |
| 990 | December 2022 | $8,181,480 | $7,850,461 | $3,763,106 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
| 990 | December 2017 | – | – | – | IRS |
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 48-0840415).
Questions about RIORDAN CLINIC INC
- What is the EIN of RIORDAN CLINIC INC?
- The employer identification number (EIN) of RIORDAN CLINIC INC is 48-0840415.
- Is RIORDAN CLINIC INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1977.
- Are donations to RIORDAN CLINIC INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does RIORDAN CLINIC INC 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 RIORDAN CLINIC INC due?
- The return for tax year 2025 (the year ending December 31, 2025) is due May 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did RIORDAN CLINIC INC last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2024.
- Who is the principal officer of RIORDAN CLINIC INC?
- The 990 for the year ended December 31, 2024 names RON HUNNINGHAKE.
- Who are the officers and directors of RIORDAN CLINIC INC?
- The 990 for the year ended December 31, 2024 lists 4 people; 1 received compensation from the organization, the highest $183,000 (RON HUNNINGHAKE, SECRETARY).
- How much revenue does RIORDAN CLINIC INC have?
- On its 990 for the year ended December 31, 2024 it reported revenue of $6,735,681, expenses of $6,209,562 and total assets of $3,777,043 at year end.
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