Roger Hartman, MD
NPI 1083781942 · Internal Medicine Physician · Harbor City, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roger Hartman, MD is a Internal Medicine Physician provider in Harbor City, CA (NPI 1083781942).
Provider details
- NPI number
- 1083781942
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G65797 (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
19 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 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 78 | 54 |
| Prednisone | 74 | 67 |
| Amlodipine Besylate | 33 | 17 |
| Losartan Potassium | 31 | 16 |
| Meloxicam | 29 | 21 |
| Azithromycin | 28 | 28 |
| Atorvastatin Calcium | 24 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-29
- Last updated
- 2021-11-29
Frequently asked questions
- What is Roger Hartman's NPI number?
- Roger Hartman's National Provider Identifier (NPI) is 1083781942, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roger Hartman's specialty?
- Roger Hartman is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Roger Hartman located?
- Roger Hartman's practice location on file with NPPES is 25825 Vermont Ave, Harbor City, CA 90710-3518.
- What is Roger Hartman's phone number?
- The practice phone number listed in the NPPES registry for Roger Hartman is (310) 325-5111.
- Does Roger Hartman accept Medicare?
- Roger Hartman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roger Hartman's NPI active?
- Yes — Roger Hartman's NPI (1083781942) 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.