Michael Joseph Warren, DO
Gastroenterology Physician · Tulsa, OK
Michael Joseph Warren, DO is a gastroenterology physician with a practice address in Tulsa, Oklahoma, and NPI 1568963551, issued on Feb 24, 2018. Check the license (Oklahoma 6796, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Michael Joseph Warren
- Credential
- DO
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 6796 OK
14293401-1204 UT
Self-reported in NPPES; status is on the state search - Practice location
- 6160 S Yale Ave Ste 100, Tulsa, OK 74136
- Phone
- (918) 497-3300
- Enumerated
- Feb 24, 2018
- Record last updated
- Jul 27, 2026
- Fax
- (918) 497-3365
- Medicare enrollment
- Enrolled (PECOS I20240729000096); accepts Medicare assignment
- Medical or professional school
- Pacific Nw Un Of Hs, Col Of Osteopathic Medicine, 2018
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 160 in Oklahoma → Look up another NPI →
Also registered at 6160 S Yale Ave Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Aran, D.O.Gastroenterology Physician1003357039
Verify Michael Joseph Warren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 6796Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average gastroenterology physician in 2024
288 Medicare Part D claims for 209 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Gavilyte-G102 claims
- Peg-3350 And Electrolytes46 claims
- Pantoprazole Sodium15 claims
- Omeprazole13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $2,305.37
71 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Warren Clinic IncTulsa, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Joseph Warren among 160 gastroenterology physician records in Oklahoma
Michael Joseph Warren, DO is one of 160 gastroenterology physician records with a practice address in Oklahoma. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 89% of them.
- NPI issued2018 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2018 · median 2000 among the 106 with a school on file
- Record last updated2026 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Oklahoma
There are 160 gastroenterology physician records in Oklahoma.
All 160 in Oklahoma → Every provider in Tulsa → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Peter Aran, M.D.Tulsa, OK 741361689661878
- Robert Aran, D.O.Tulsa, OK 741361003357039
- Christian Clark, MDTulsa, OK 741361649223710
- Andrew Crawford, DOTulsa, OK 741361447237938
- Febin John, MDTulsa, OK 741361619385606
- Douglas Kliewer, M. D.Tulsa, OK 741361174518906
- Kevin McNamara, MDTulsa, OK 741361770744575
- Frank Peluso, DOTulsa, OK 741361689661530
Common questions
What is Michael Joseph Warren, DO's NPI number?
Michael Joseph Warren, DO's National Provider Identifier (NPI) is 1568963551, issued on Feb 24, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Michael Joseph Warren, DO located?
The NPPES record lists a practice address at 6160 S Yale Ave Ste 100, Tulsa, OK, 74136. Phone: (918) 497-3300. Providers update this record themselves, so call before visiting.
How can I verify Michael Joseph Warren, DO's license?
NPPES lists Oklahoma license number 6796, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Joseph Warren, DO prescribe under Medicare Part D?
In 2024, Michael Joseph Warren, DO had 288 Medicare Part D claims for 209 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.