Samuel R. Stoyak, M.D.
Internal Medicine Physician · Frederick, MD
Samuel R. Stoyak, M.D. is an internal medicine physician with a practice address in Frederick, Maryland, and NPI 1588906994, issued on Mar 24, 2013. Check the license (Maryland D97633, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Samuel R. Stoyak
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- D97633 MD
042.0013430 VT
Self-reported in NPPES; status is on the state search - Practice location
- 1562 Opossumtown Pike, Frederick, MD 21702
- Phone
- (240) 215-6310
- Enumerated
- Mar 24, 2013
- Record last updated
- Aug 21, 2023
- Medicare enrollment
- Enrolled (PECOS I20231003000783); accepts Medicare assignment
- Medical or professional school
- University Of Pittsburgh School Of Medicine, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1562 Opossumtown Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aisha Abdul-Samad, STSpeech-Language Pathologist1629291067
- Stephanie Adami, OTOccupational Therapist1487717385
- Atrish Akhtar, M.D.Internal Medicine Physician1386082881
- Eden Amdemichael, M.D.Surgery Physician1659530509
- Janna BarrickOccupational Therapist1194948448
- Oscar Raymond Bascug, DOHematology & Oncology Physician1417484627
Verify Samuel R. Stoyak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D97633Check 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% more Medicare Part D claims than the average internal medicine physician in 2024
3,251 Medicare Part D claims for 551 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 34 claims were for opioids.
Most prescribed
- Atorvastatin Calcium187 claims
- Amlodipine Besylate176 claims
- Levothyroxine Sodium137 claims
- Losartan Potassium113 claims
- Rosuvastatin Calcium109 claims
- Metformin Hcl Er89 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 practice group's MIPS final score for 2023 (Medicare payment program): 80.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 3 group practices
- Amber Hill Physical Therapy IncFrederick, MD
- Frederick Health Hospital IncFrederick, MD
- Frederick Health Medical Group LLCFrederick, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
59 internal medicine physician records list a practice address in Frederick
They are 59 of the 3,981 NPPES records with a practice address in Frederick, and 3,904 internal medicine physician records in Maryland.
All 59 in Frederick → All 3,904 in Maryland → Every provider in Frederick →
Other internal medicine physician records in Maryland
- Eduardo Abarca Rojas, M.D.Parkville, MD1538447628
- Rasheed Abassi, M.D.Clinton, MD1376608620
- Ghulam Abbas, MDFrederick, MD1477658045
- Shamima Abbas, MDKensington, MD1750445896
- Nourelhuda Abbas Hamed, MDSilver Spring, MD1699339473
- Arsalan Abbasi, MDWestminster, MD1942762604
- Hamdi AbdeenGaithersburg, MD1245972413
- Mukemil Abdella, M.D.Glenn Dale, MD1871603381
- Suzan Abdo, MDClarksville, MD1588631824
- Madeeha Abdul GhaffarElkton, MD1194276063
Common questions
What is Samuel R. Stoyak, M.D.'s NPI number?
Samuel R. Stoyak, M.D.'s National Provider Identifier (NPI) is 1588906994, issued on Mar 24, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Samuel R. Stoyak, M.D. located?
The NPPES record lists a practice address at 1562 Opossumtown Pike, Frederick, MD, 21702. Phone: (240) 215-6310. Providers update this record themselves, so call before visiting.
How can I verify Samuel R. Stoyak, M.D.'s license?
NPPES lists Maryland license number D97633, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Samuel R. Stoyak, M.D. prescribe under Medicare Part D?
In 2024, Samuel R. Stoyak, M.D. had 3,251 Medicare Part D claims for 551 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Samuel R. Stoyak, M.D.'s MIPS final score?
The 2023 MIPS final score is 80.3 of 100, reported for the practice group. 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.