James Amberg, MD
NPI 1265497093 · Family Medicine Physician · La Mesa, CA
James Amberg, MD is a Family Medicine Physician provider in La Mesa, CA (NPI 1265497093).
Provider details
- NPI number
- 1265497093
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G048686 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Levothyroxine Sodium | 39 |
| Atomoxetine Hcl | 13 |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 13 |
| Estradiol | 13 |
| Lubiprostone | 13 |
| Medroxyprogesterone Acetate | 13 |
| Propranolol Hcl | 13 |
| Tamsulosin Hcl | 13 |
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 , 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
- 2006-04-17
- Last updated
- 2014-02-28
Frequently asked questions
- What is James Amberg's NPI number?
- James Amberg's National Provider Identifier (NPI) is 1265497093, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Amberg's specialty?
- James Amberg is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Amberg located?
- James Amberg's practice location on file with NPPES is 5525 Grossmont Center Dr, La Mesa, CA 91942-3009.
- What is James Amberg's phone number?
- The practice phone number listed in the NPPES registry for James Amberg is (619) 644-6500.
- Is James Amberg's NPI active?
- Yes — James Amberg's NPI (1265497093) is active in the NPPES registry as of the last update on 2014-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.