Thomas Grass
Physician Assistant · Tracy, CA
Thomas Grass is a physician assistant with a practice address in Tracy, California, and NPI 1457126476, issued on Nov 20, 2023. Check the license (California 68101, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Thomas Grass
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 68101 CA
Self-reported in NPPES; status is on the state search - Practice location
- 530 W Eaton Ave Ste B, Tracy, CA 95376
- Phone
- (209) 835-9029
- Enumerated
- Nov 20, 2023
- Record last updated
- Mar 27, 2026
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Verify Thomas Grass in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 68101Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Thomas Grass among 14,451 physician assistant records in California
Thomas Grass is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2023, is newer than 80% of them.
- NPI issued2023 · 80% of these records are older, 13% newer
- In a Medicare fileNo · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2026 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 physician assistant records list a practice address in Tracy
They are 16 of the 1,864 NPPES records with a practice address in Tracy, and 14,451 physician assistant records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 14,451 in California → Every provider in Tracy → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kevin Barnwell, PATracy, CA 953761740804665
- Paula Davis, PA-CTracy, CA 953761437312527
- Stelios Katzakis, PA-CTracy, CA 953761134362262
- Audrey Lee, PA-CTracy, CA 953761992598064
- Diego Lescano, PATracy, CA 953761831713833
- Christopher Madsen, PA-CTracy, CA 953761932340627
- Jullianne Pham, PA-CTracy, CA 953761477247427
- Kathryn Tiano, PA-CTracy, CA 953761215338611
Common questions
What is Thomas Grass's NPI number?
Thomas Grass's National Provider Identifier (NPI) is 1457126476, issued on Nov 20, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Grass located?
The NPPES record lists a practice address at 530 W Eaton Ave Ste B, Tracy, CA, 95376. Phone: (209) 835-9029. Providers update this record themselves, so call before visiting.
How can I verify Thomas Grass's license?
NPPES lists California license number 68101, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.