Thomas E. Greely, M.D.
Family Medicine Physician · Concord, CA
Thomas E. Greely, M.D. is a family medicine physician with a practice address in Concord, California, and NPI 1851336820, issued on Jun 16, 2006. Check the license (California G74271, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas E. Greely
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G74271 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2700 Grant St, Concord, CA 94520
- Phone
- (925) 677-0500
- Enumerated
- Jun 16, 2006
- Record last updated
- Mar 25, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (925) 677-0519
- Medicaid ID
- 00G742710 CA
- Medicare enrollment
- Enrolled (PECOS I20090205000031); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 2700 Grant St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Susan Adler-Bressler, M.D.Family Medicine Physician1588615207
- Kris Arneson, P.T.Physical Therapist1669596425
- Alicia Bakkum, NPClinical Nurse Specialist1982793220
- Mike Bannout, M.D.Internal Medicine Physician1598784662
Verify Thomas E. Greely in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G74271Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average family medicine physician in 2024
193 Medicare Part D claims for 26 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Biktarvy24 claims
- Combivent Respimat13 claims
- Tamsulosin Hcl13 claims
- Amlodipine Besylate11 claims
- Escitalopram Oxalate11 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): 85.7 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 2 group practices
- John Muir Physician NetworkConcord, CA
- Seneca Healthcare DistrictChester, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas E. Greely among 17,133 family medicine physician records in California
Thomas E. Greely, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1989 · median 2005 among the 10,652 with a school on file
- Record last updated2014 · 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
38 family medicine physician records list a practice address in Concord
They are 38 of the 9,328 NPPES records with a practice address in Concord, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Concord → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Susan Adler-Bressler, M.D.Concord, CA 945201588615207
- Olawunmi Beckley, M.D.Concord, CA 945201497789499
- Teresa Brock, M.D.Concord, CA 945201619920444
- Wilbert Charles, MDConcord, CA 945201861487589
- Susanne Duesberg, M.D.Concord, CA 945201770509838
- Detlef Ehling, M.D.Concord, CA 945201154331155
- Brian Honbo, M.D.Concord, CA 945201578587721
- Michael Lewis, MDConcord, CA 945201700826740
Common questions
What is Thomas E. Greely, M.D.'s NPI number?
Thomas E. Greely, M.D.'s National Provider Identifier (NPI) is 1851336820, issued on Jun 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas E. Greely, M.D. located?
The NPPES record lists a practice address at 2700 Grant St, Concord, CA, 94520. Phone: (925) 677-0500. Providers update this record themselves, so call before visiting.
How can I verify Thomas E. Greely, M.D.'s license?
NPPES lists California license number G74271, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas E. Greely, M.D. prescribe under Medicare Part D?
In 2024, Thomas E. Greely, M.D. had 193 Medicare Part D claims for 26 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Thomas E. Greely, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.7 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.