Thomas Sisk, FNP-BC
NPI 1538783139 · Family Nurse Practitioner · San Jose, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Sisk, FNP-BC is a Family Nurse Practitioner provider in San Jose, CA (NPI 1538783139).
Provider details
- NPI number
- 1538783139
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-BC
- Sex
- Male
- Sole proprietor
- No
- License
- A167770 (IA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 22 |
| Atorvastatin Calcium | 12 |
| Amlodipine Besylate | 11 |
| Azelastine Hcl | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 1 Shrader St Ste 640San Francisco, CA 94117-1018Phone: (415) 752-0100
- 1309 Coffeen Ave Ste 1200Sheridan, WY 82801-5777Phone: (307) 224-0600
Registry dates
- Enumerated
- 2020-05-31
- Last updated
- 2026-03-16
- Certified
- 2026-03-16
Frequently asked questions
- What is Thomas Sisk's NPI number?
- Thomas Sisk's National Provider Identifier (NPI) is 1538783139, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Sisk's specialty?
- Thomas Sisk is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Thomas Sisk located?
- Thomas Sisk's practice location on file with NPPES is 102 S 11th St, San Jose, CA 95112-2132.
- What is Thomas Sisk's phone number?
- The practice phone number listed in the NPPES registry for Thomas Sisk is (307) 620-9249.
- Does Thomas Sisk accept Medicare?
- Thomas Sisk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Sisk's NPI active?
- Yes — Thomas Sisk's NPI (1538783139) is active in the NPPES registry as of the last update on 2026-03-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.