Thomas Gregory Johnson, M.D.
Family Medicine Physician · Oakland, MD
Thomas Gregory Johnson, M.D. is a family medicine physician with a practice address in Oakland, Maryland, and NPI 1285627604, issued on Aug 31, 2005. Check the license (Maryland D15333, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Thomas Gregory Johnson
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- D15333 MD
Self-reported in NPPES; status is on the state search - Practice location
- 311 N 4TH St, Oakland, MD 21550
- Phone
- (301) 334-8171
- Enumerated
- Aug 31, 2005
- Record last updated
- Apr 18, 2022
- Fax
- (301) 334-1807
- Medicaid IDs
- 410201100 MD
0049023000 WV - Medicare enrollment
- Enrolled (PECOS I20040611000408); accepts Medicare assignment
- Medical or professional school
- University Of Pittsburgh School Of Medicine, 1972
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,912 in Maryland → Look up another NPI →
Also registered at 311 N 4TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dona Alvarez, M.D.Orthopaedic Surgery Physician1013087147
- Christopher Baker, PA-CPhysician Assistant1356529465
- Jean Baker, PAPhysician Assistant1386822856
- Kenneth Buczynski, M.D.Family Medicine Physician1790704914
- Earl Duvall, LCPCProfessional Counselor1548445968
- Todd Feathers, M.D.Orthopaedic Surgery Physician1326249392
Verify Thomas Gregory Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D15333Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
19 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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): 94.1 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).
Bills Medicare through one group practice
- Specialty Physicians OF Garrett County, LLCOakland, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Gregory Johnson among 1,912 family medicine physician records in Maryland
Thomas Gregory Johnson, M.D. is one of 1,912 family medicine physician records with a practice address in Maryland. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1972 · median 2004 among the 1,141 with a school on file
- Record last updated2022 · 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 207Q00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 family medicine physician records list a practice address in Oakland
They are 21 of the 304 NPPES records with a practice address in Oakland, and 1,912 family medicine physician records in Maryland.
All 1,912 in Maryland → Every provider in Oakland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jeffrey Bernstein, M.D.Oakland, MD 215501508825613
- Daniel Buckingham, M.D.Oakland, MD 215501992732028
- Kenneth Buczynski, M.D.Oakland, MD 215501790704914
- Barbra Burkett, D.O.Oakland, MD 215501881621571
- Rebecca Crowell, DOOakland, MD 215501154588051
- Robert Goralski, M.D.Oakland, MD 215501033103411
- Patricia Gotsch, MDOakland, MD 215501265495170
- Shawn Long, M.D.Oakland, MD 215501639275332
Common questions
What is Thomas Gregory Johnson, M.D.'s NPI number?
Thomas Gregory Johnson, M.D.'s National Provider Identifier (NPI) is 1285627604, issued on Aug 31, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Gregory Johnson, M.D. located?
The NPPES record lists a practice address at 311 N 4TH St, Oakland, MD, 21550. Phone: (301) 334-8171. Providers update this record themselves, so call before visiting.
How can I verify Thomas Gregory Johnson, M.D.'s license?
NPPES lists Maryland license number D15333, 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 Thomas Gregory Johnson, M.D. prescribe under Medicare Part D?
In 2024, Thomas Gregory Johnson, M.D. had 19 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Thomas Gregory Johnson, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.1 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.