Gregory Scott Thomas, D.O.
Family Medicine Physician · San Diego, CA
Gregory Scott Thomas, D.O. is a family medicine physician with a practice address in San Diego, California, and NPI 1578943858, issued on Jun 2, 2015. Check the license (California 20A16347, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory Scott Thomas
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 20A16347 CA
37697 SC
Self-reported in NPPES; status is on the state search - Practice location
- 823 Gateway Center Way, San Diego, CA 92102
- Phone
- (619) 515-2555
- Enumerated
- Jun 2, 2015
- Record last updated
- Nov 24, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (619) 462-0725
- Medicare enrollment
- Enrolled (PECOS I20190517000807); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2015
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 823 Gateway Center Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Majella Abris Limas, OTOccupational Therapist1881864064
- Ralph Ascher, MDFamily Medicine Physician1275543258
- Remedios Babanto, FNPFamily Nurse Practitioner1669520011
- Joan Bailey, MDInternal Medicine Physician1386697779
- Leticia BaneMarriage & Family Therapist1366911901
- Sasha Bangs, PA-CPhysician Assistant1720524374
Verify Gregory Scott Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A16347Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average family medicine physician in 2024
13 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Bills Medicare through one group practice
- Sharpcare Medical Group ApcSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Scott Thomas among 17,133 family medicine physician records in California
Gregory Scott Thomas, D.O. 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 2015, is newer than 74% of them.
- NPI issued2015 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2015 · median 2005 among the 10,652 with a school on file
- Record last updated2019 · 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).
780 family medicine physician records list a practice address in San Diego
They are 780 of the 52,937 NPPES records with a practice address in San Diego, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Diego → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ali Abdallah, DOSan Diego, CA 921021649699968
- Ralph Ascher, MDSan Diego, CA 921021275543258
- Tia Dorn, M.D.San Diego, CA 921021285074740
- Manijeh Ghasemi-Varnamkhasti, MDSan Diego, CA 921021740449727
- Lisa Hamilton, D.O.San Diego, CA 921021235576059
- Bahghi Keflezighi, MDSan Diego, CA 921021124210844
- Veronica Palomino, MDSan Diego, CA 921021255569083
- Cristhian Ramirez, D.O.San Diego, CA 921021407200942
Common questions
What is Gregory Scott Thomas, D.O.'s NPI number?
Gregory Scott Thomas, D.O.'s National Provider Identifier (NPI) is 1578943858, issued on Jun 2, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Scott Thomas, D.O. located?
The NPPES record lists a practice address at 823 Gateway Center Way, San Diego, CA, 92102. Phone: (619) 515-2555. Providers update this record themselves, so call before visiting.
How can I verify Gregory Scott Thomas, D.O.'s license?
NPPES lists California license number 20A16347, 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 Gregory Scott Thomas, D.O. prescribe under Medicare Part D?
In 2024, Gregory Scott Thomas, D.O. had 13 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.