Lilly Hammack, DO, RDN
NPI 1972932523 · Internal Medicine Physician · Gilroy, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lilly Hammack, DO, RDN is a Internal Medicine Physician provider in Gilroy, CA (NPI 1972932523).
Provider details
- NPI number
- 1972932523
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO, RDN
- Sex
- Female
- Sole proprietor
- No
- License
- DT81915 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Dietary & Nutritional Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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.
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) |
|---|---|
| Ciclesonidebrand: Alvesco | 18 |
| Atorvastatin Calcium | 13 |
| Fluticasone Propionate | 12 |
| Levothyroxine Sodium | 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
Registry dates
- Enumerated
- 2013-11-04
- Last updated
- 2025-08-04
- Certified
- 2025-08-04
Frequently asked questions
- What is Lilly Hammack's NPI number?
- Lilly Hammack's National Provider Identifier (NPI) is 1972932523, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lilly Hammack's specialty?
- Lilly Hammack is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lilly Hammack located?
- Lilly Hammack's practice location on file with NPPES is 7520 Arroyo Cir, Gilroy, CA 95020-7303.
- What is Lilly Hammack's phone number?
- The practice phone number listed in the NPPES registry for Lilly Hammack is (408) 848-4600.
- Does Lilly Hammack accept Medicare?
- Lilly Hammack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lilly Hammack's NPI active?
- Yes — Lilly Hammack's NPI (1972932523) is active in the NPPES registry as of the last update on 2025-08-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.