William Martin Schnitz, MD
Rheumatology Physician · Oklahoma City, OK
William Martin Schnitz, MD is a rheumatology physician with a practice address in Oklahoma City, Oklahoma, and NPI 1629015763, issued on May 31, 2006. Check the license (Oklahoma 16521, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- William Martin Schnitz
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 16521 OK
Self-reported in NPPES; status is on the state search - Practice location
- 3555 NW 58TH St Ste 804, Oklahoma City, OK 73112
- Phone
- (405) 548-0430
- Enumerated
- May 31, 2006
- Record last updated
- Jul 20, 2026
- Fax
- (405) 463-4408
- Medicaid ID
- 100095820B OK
- Medicare enrollment
- Enrolled (PECOS I20041016000179); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 69 in Oklahoma → Look up another NPI →
Also registered at 3555 NW 58TH St Ste 804
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrea Sestak, MD, PHDPediatric Rheumatology Physician1700113289
Verify William Martin Schnitz 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 16521Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average rheumatology physician in 2024
3,987 Medicare Part D claims for 434 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 291 claims were for opioids.
Most prescribed
- Prednisone353 claims
- Methotrexate276 claims
- Hydroxychloroquine Sulfate267 claims
- Enbrel Sureclick168 claims
- Alendronate Sodium139 claims
- Tramadol Hcl133 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.
The MIPS final score for 2023 (Medicare payment program): 80.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,877.47
71 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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 2 group practices
- Absentee Shawnee Tribal Health Authority, IncNorman, OK
- Central Oklahoma American Indian Health Council, Inc.Oklahoma City, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Martin Schnitz among 69 rheumatology physician records in Oklahoma
William Martin Schnitz, MD is one of 69 rheumatology physician records with a practice address in Oklahoma. 90% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 51% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1987 · median 2002 among the 47 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Oklahoma
There are 69 rheumatology physician records in Oklahoma.
All 69 in Oklahoma → Every provider in Oklahoma City → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Amy Dedeke, MDOklahoma City, OK 731121295875300
- Mohammad Khan, MDOklahoma City, OK 731121669026019
- Robert Arthur, MDOklahoma City, OK 731141275531519
- Rabia Cheema, M.D.Oklahoma City, OK 731141295174431
- Fahed Hamadeh, M.D.Oklahoma City, OK 731141194760918
- Michael Pickrell, MDOklahoma City, OK 731141346253325
- Omar Silvestre, MDOklahoma City, OK 731141679708259
- Bushra Akram, MDOklahoma City, OK 731091962998781
Common questions
What is William Martin Schnitz, MD's NPI number?
William Martin Schnitz, MD's National Provider Identifier (NPI) is 1629015763, issued on May 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Martin Schnitz, MD located?
The NPPES record lists a practice address at 3555 NW 58TH St Ste 804, Oklahoma City, OK, 73112. Phone: (405) 548-0430. Providers update this record themselves, so call before visiting.
How can I verify William Martin Schnitz, MD's license?
NPPES lists Oklahoma license number 16521, 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 William Martin Schnitz, MD prescribe under Medicare Part D?
In 2024, William Martin Schnitz, MD had 3,987 Medicare Part D claims for 434 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is William Martin Schnitz, MD's MIPS final score?
The 2023 MIPS final score is 80.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.