Jeffrey Thomas
Internal Medicine Physician · Orange, CA
Jeffrey Thomas is an internal medicine physician with a practice address in Orange, California, and NPI 1932337136, issued on Jun 25, 2009. Check the license (California A115831, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jeffrey Thomas
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A115831 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2592 N Santiago Blvd, Orange, CA 92867
- Phone
- (855) 434-7763
- Enumerated
- Jun 25, 2009
- Record last updated
- Dec 11, 2023
- Fax
- (949) 281-5550
- Medicaid ID
- 00A115831 CA
- Medicare enrollment
- Enrolled (PECOS I20241007000832); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2592 N Santiago Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joey Asfahan, MDFamily Medicine Physician1639706211
- Doris HudsonFamily Nurse Practitioner1487381786
- Leenah KhayatNurse Practitioner1023743986
- Jennifer Mandhai, FNPFamily Nurse Practitioner1134686207
- Marsha-Gail McDonald, FNP-BCFamily Nurse Practitioner1023546579
- Rhea Mulvina, NP-CNurse Practitioner1407505464
Verify Jeffrey Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A115831Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average internal medicine physician in 2024
940 Medicare Part D claims for 145 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 37 claims were for opioids.
Most prescribed
- Atorvastatin Calcium59 claims
- Levothyroxine Sodium39 claims
- Sertraline Hcl39 claims
- Quetiapine Fumarate37 claims
- Amlodipine Besylate31 claims
- Pantoprazole Sodium29 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 7 group practices
- Geiss Med Nevada PCLas Vegas, NV
- J M Geiss DO ApcRed Bank, NJ
- Senior Doc Arizona PCNampa, ID
- Senior Doc Idaho PCSanta Ana, CA
- Senior Doc Oregon PCOntario, OR
- Senior Doc Tennessee PCNashville, TN
- Senior Doc WA PCMarysville, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jeffrey Thomas among 17,696 internal medicine physician records in California
Jeffrey Thomas is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2009 · median 2004 among the 11,065 with a school on file
- Record last updated2023 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
187 internal medicine physician records list a practice address in Orange
They are 187 of the 13,245 NPPES records with a practice address in Orange, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Orange → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Shenfon Chou, M.D.Orange, CA 928671437334356
- Shilpa Deshmukh, M.D.Orange, CA 928671790723203
- Chien-Ko Wu, M.D.Orange, CA 928671275680829
- Ivan Yee, D.O.Orange, CA 928671154653640
- Saeed Zanjani, M.D.Orange, CA 928671588809446
- Jane Abdelhadi, M.D.Orange, CA 928681124097100
- Romilla Batra, MDOrange, CA 928681871545038
- Nadia Elihu, M.D.Orange, CA 928681659340156
Common questions
What is Jeffrey Thomas's NPI number?
Jeffrey Thomas's National Provider Identifier (NPI) is 1932337136, issued on Jun 25, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey Thomas located?
The NPPES record lists a practice address at 2592 N Santiago Blvd, Orange, CA, 92867. Phone: (855) 434-7763. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey Thomas's license?
NPPES lists California license number A115831, 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 Jeffrey Thomas prescribe under Medicare Part D?
In 2024, Jeffrey Thomas had 940 Medicare Part D claims for 145 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.