Siamak Heshmati, MD
NPI 1972550077 · Family Medicine Physician · Lancaster, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Siamak Heshmati, MD is a Family Medicine Physician provider in Lancaster, CA (NPI 1972550077).
Provider details
- NPI number
- 1972550077
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A84044 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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 · 116 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 640 | 138 |
| Atorvastatin Calcium | 576 | 216 |
| Lisinopril | 304 | 102 |
| Amlodipine Besylate | 285 | 117 |
| Metformin Hcl | 258 | 93 |
| Losartan Potassium | 241 | 84 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-27
- Last updated
- 2021-11-29
Frequently asked questions
- What is Siamak Heshmati's NPI number?
- Siamak Heshmati's National Provider Identifier (NPI) is 1972550077, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siamak Heshmati's specialty?
- Siamak Heshmati is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Siamak Heshmati located?
- Siamak Heshmati's practice location on file with NPPES is 44469 10th St W, Lancaster, CA 93534-3324.
- What is Siamak Heshmati's phone number?
- The practice phone number listed in the NPPES registry for Siamak Heshmati is (661) 945-9411.
- Does Siamak Heshmati accept Medicare?
- Siamak Heshmati is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Siamak Heshmati's NPI active?
- Yes — Siamak Heshmati's NPI (1972550077) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.