George P. Thomas, M.D.
Gastroenterology Physician · Arcadia, CA
George P. Thomas, M.D. is a gastroenterology physician with a practice address in Arcadia, California, and NPI 1649293150, issued on Jul 25, 2006. Check the license (California A35801, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- George P. Thomas
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A35801 CA
Self-reported in NPPES; status is on the state search - Practice location
- 622 W Duarte RD Ste 302, Arcadia, CA 91007
- Phone
- (626) 447-0782
- Enumerated
- Jul 25, 2006
- Record last updated
- Jan 5, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (626) 447-0795
- Medicaid ID
- 00A358011 CA
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 622 W Duarte RD Ste 302
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Niveditha Vilasagar, M.D.Pediatric Critical Care Medicine Physician1831355320
Verify George P. Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A35801Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average gastroenterology physician in 2024
660 Medicare Part D claims for 228 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Famotidine313 claims
- Pantoprazole Sodium100 claims
- Sod Sulf-Potass Sulf-Mag Sulf53 claims
- Omeprazole49 claims
- Mesalamine43 claims
- Sucralfate16 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): 18 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: $66.07
3 payments; by number, the most common kind was food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 13,350 providers of this specialty with any payment received $5,015.95 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.
George P. Thomas among 2,140 gastroenterology physician records in California
George P. Thomas, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2009 · 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 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Arcadia → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Michael Chu, M.D.Arcadia, CA 910071952491805
- Jacob Korula, M.D.Arcadia, CA 910071295732568
- Hanson Lee, M.D.Arcadia, CA 910071730181116
- Sunny Lo, D.O.Arcadia, CA 910071891053187
- Donald Portocarrero, D.O.Arcadia, CA 910071841503570
- Kenneth Shan, MDArcadia, CA 910071629605431
- Elias Tarakji, M.D.Arcadia, CA 910061467454835
- Donald David, MDDuarte, CA 910101588767131
Common questions
What is George P. Thomas, M.D.'s NPI number?
George P. Thomas, M.D.'s National Provider Identifier (NPI) is 1649293150, issued on Jul 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is George P. Thomas, M.D. located?
The NPPES record lists a practice address at 622 W Duarte RD Ste 302, Arcadia, CA, 91007. Phone: (626) 447-0782. Providers update this record themselves, so call before visiting.
How can I verify George P. Thomas, M.D.'s license?
NPPES lists California license number A35801, 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 George P. Thomas, M.D. prescribe under Medicare Part D?
In 2024, George P. Thomas, M.D. had 660 Medicare Part D claims for 228 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is George P. Thomas, M.D.'s MIPS final score?
The 2023 MIPS final score is 18 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.