What is Thomas Grass's NPI number?

Thomas Grass's National Provider Identifier (NPI) is 1457126476, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Thomas Grass's specialty?

Thomas Grass is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is Thomas Grass located?

Thomas Grass's practice location on file with NPPES is 530 W Eaton Ave Ste B, Tracy, CA 95376-3454.

What is Thomas Grass's phone number?

The practice phone number listed in the NPPES registry for Thomas Grass is (209) 835-9029.

Is Thomas Grass's NPI active?

Yes — Thomas Grass's NPI (1457126476) is active in the NPPES registry as of the last update on 2026-03-27.

IndividualActive

Thomas Grass

NPI 1457126476 · Physician Assistant · Tracy, CA

Thomas Grass is a Physician Assistant provider in Tracy, CA (NPI 1457126476).

Provider details

NPI number: 1457126476
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Sex: Male
Sole proprietor: No
License: 68101 (CA)

Practice location

530 W Eaton Ave Ste B

Tracy, CA 95376-3454

Phone: (209) 835-9029

Street-level locationGet directions

More CA providers

Mailing address

530 W Eaton Ave Ste B

Tracy, CA 95376-3454

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense 68101 (CA)
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Established profile(58/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
2 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2023-11-20
Last updated: 2026-03-27
Certified: 2026-03-27

Frequently asked questions

What is Thomas Grass's NPI number?: Thomas Grass's National Provider Identifier (NPI) is 1457126476, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Thomas Grass's specialty?: Thomas Grass is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
Where is Thomas Grass located?: Thomas Grass's practice location on file with NPPES is 530 W Eaton Ave Ste B, Tracy, CA 95376-3454.
What is Thomas Grass's phone number?: The practice phone number listed in the NPPES registry for Thomas Grass is (209) 835-9029.
Is Thomas Grass's NPI active?: Yes — Thomas Grass's NPI (1457126476) is active in the NPPES registry as of the last update on 2026-03-27.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions