NPPES file of Aug 9, 2026

Michael K. Maxwell, M.D.

Internal Medicine Physician · Tulsa, OK

Michael K. Maxwell, M.D. is an internal medicine physician with a practice address in Tulsa, Oklahoma, and NPI 1346219334, issued on Mar 14, 2006. Check the license (Oklahoma 15222, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1346219334
Name
Michael K. Maxwell
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
15222 OK
Self-reported in NPPES; status is on the state search
Practice location
1919 S Wheeling Ave, Tulsa, OK 74104
Phone
(918) 748-7877
Enumerated
Mar 14, 2006
Record last updated
Jun 11, 2018 (not updated in 8 years: call before relying on the address or phone)
Fax
(918) 403-6305
Medicaid ID
100110740A OK
Medicare enrollment
Enrolled (PECOS I20110113000826); accepts Medicare assignment
Medical or professional school
University Of Oklahoma College Of Medicine, 1984
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1919 S Wheeling Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Marilyn Allen, PT, CHTHand Physical Therapist1427133909
  2. H. Allred, MDColon & Rectal Surgery Physician1801827514
  3. Aerial AnthonyPhysician Assistant1205200789
  4. Terri Best, CRNFARegistered Nurse1558377606
  5. Belinda Brazear, CST/CFASurgical Assistant1265447791
  6. Casie Brim, NPNurse Practitioner1003196684

Verify Michael K. Maxwell in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
    Search for license 15222
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Oklahoma license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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4.5 times the Medicare Part D claims of the average internal medicine physician in 2024

14,272 Medicare Part D claims for 1,062 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 259 claims were for opioids.

  1. Michael Maxwell14,272
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium1,066 claims
  2. Amlodipine Besylate780 claims
  3. Levothyroxine Sodium694 claims
  4. Lisinopril679 claims
  5. Telmisartan427 claims
  6. Rosuvastatin Calcium416 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.

Bills Medicare through one group practice

  1. Omni Medical Group IncTulsa, OK

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Michael K. Maxwell among 1,115 internal medicine physician records in Oklahoma

Michael K. Maxwell, M.D. is one of 1,115 internal medicine physician records with a practice address in Oklahoma. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.

  • NPI issued2006 · 11% of these records are older, 57% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated1984 · median 2007 among the 653 with a school on file
  • Record last updated2018 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

307 internal medicine physician records list a practice address in Tulsa

They are 307 of the 18,643 NPPES records with a practice address in Tulsa, and 1,115 internal medicine physician records in Oklahoma.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Robert Cossman, M.D.Tulsa, OK 741041184627325
  2. Jon Cox, M.D.Tulsa, OK 741041114996741
  3. Janis Finer, M.D.Tulsa, OK 741041326017328
  4. Christine Franden, M.D.Tulsa, OK 741041669459160
  5. Linda Goldenstern, M.D.Tulsa, OK 741041205805835
  6. Andrew Gordon, M.D.Tulsa, OK 741041447228549
  7. Paul Hendrix, M.D.Tulsa, OK 741041306848692
  8. Erick Hill, M.D.Tulsa, OK 741041508835281

Common questions

What is Michael K. Maxwell, M.D.'s NPI number?

Michael K. Maxwell, M.D.'s National Provider Identifier (NPI) is 1346219334, issued on Mar 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael K. Maxwell, M.D. located?

The NPPES record lists a practice address at 1919 S Wheeling Ave, Tulsa, OK, 74104. Phone: (918) 748-7877. Providers update this record themselves, so call before visiting.

How can I verify Michael K. Maxwell, M.D.'s license?

NPPES lists Oklahoma license number 15222, 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 K. Maxwell, M.D. prescribe under Medicare Part D?

In 2024, Michael K. Maxwell, M.D. had 14,272 Medicare Part D claims for 1,062 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.