Mary Clarke, MD
Family Medicine Physician · Stillwater, OK
Mary Clarke, MD is a family medicine physician with a practice address in Stillwater, Oklahoma, and NPI 1194839589, issued on Aug 19, 2006. Check the license on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Mary Clarke
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- L8314 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1815 W 6TH Ave, Stillwater, OK 74074
- Phone
- (405) 743-7300
- Enumerated
- Aug 19, 2006
- Record last updated
- Oct 27, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (405) 743-7398
- Medicaid ID
- 1730673 01 TX
- Medicare enrollment
- Enrolled (PECOS I20080408000141); accepts Medicare assignment
- Medical or professional school
- University Of Oklahoma College Of Medicine, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,303 in Oklahoma → Look up another NPI →
Also registered at 1815 W 6TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Schyler Alley, MHS, PA-CPhysician Assistant1215694088
- William Anthony, D.O.Family Medicine Physician1508306655
- Gregory Balcerak, DOInternal Medicine Physician1538839154
- Daniel Brown, D.O.Family Medicine Physician1134310436
- Terry Brown, M.D.Internal Medicine Physician1124004759
- Susan Bullard, M.D.Pediatrics Physician1386629129
Verify Mary Clarke in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and SupervisionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% more Medicare Part D claims than the average family medicine physician in 2024
5,026 Medicare Part D claims for 312 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 94 claims were for opioids.
Most prescribed
- Atorvastatin Calcium329 claims
- Levothyroxine Sodium245 claims
- Lisinopril210 claims
- Omeprazole192 claims
- Metoprolol Succinate136 claims
- Citalopram Hbr122 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): 91.2 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: $19.04
1 payment: food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 55,478 providers of this specialty with any payment received $902.55 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
- Stillwater Medical Center AuthorityPonca City, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Clarke among 2,303 family medicine physician records in Oklahoma
Mary Clarke, MD is one of 2,303 family medicine physician records with a practice address in Oklahoma. 79% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1996 · median 2008 among the 1,407 with a school on file
- Record last updated2008 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 family medicine physician records list a practice address in Stillwater
They are 22 of the 1,440 NPPES records with a practice address in Stillwater, and 2,303 family medicine physician records in Oklahoma.
All 2,303 in Oklahoma → Every provider in Stillwater → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- William Anthony, D.O.Stillwater, OK 740741508306655
- Priyankha Balasundaram, MDStillwater, OK 740741821278698
- Daniel Brown, D.O.Stillwater, OK 740741134310436
- James Carley, M.D.Stillwater, OK 740741669458303
- Angela Chang, MDStillwater, OK 740741679776199
- Dianne English, M.D.Stillwater, OK 740741689650418
- Frank Evans, D.O.Stillwater, OK 740741639158355
- Monica Harden, DOStillwater, OK 740741235461583
Common questions
What is Mary Clarke, MD's NPI number?
Mary Clarke, MD's National Provider Identifier (NPI) is 1194839589, issued on Aug 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary Clarke, MD located?
The NPPES record lists a practice address at 1815 W 6TH Ave, Stillwater, OK, 74074. Phone: (405) 743-7300. Providers update this record themselves, so call before visiting.
How can I verify Mary Clarke, MD's license?
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 Mary Clarke, MD prescribe under Medicare Part D?
In 2024, Mary Clarke, MD had 5,026 Medicare Part D claims for 312 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Mary Clarke, MD's MIPS final score?
The 2023 MIPS final score is 91.2 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.