James Michelsen, M.D.
NPI 1750342390 · Geriatric Medicine (Internal Medicine) Physician · La Jolla, CA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Michelsen, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in La Jolla, CA (NPI 1750342390).
Provider details
- NPI number
- 1750342390
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A65691 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-31
- Last updated
- 2007-07-09
Frequently asked questions
- What is James Michelsen's NPI number?
- James Michelsen's National Provider Identifier (NPI) is 1750342390, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Michelsen's specialty?
- James Michelsen is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is James Michelsen located?
- James Michelsen's practice location on file with NPPES is 10666 N Torrey Pines Rd, La Jolla, CA 92037-1027.
- What is James Michelsen's phone number?
- The practice phone number listed in the NPPES registry for James Michelsen is (858) 554-6158.
- Does James Michelsen accept Medicare?
- James Michelsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Michelsen's NPI active?
- Yes — James Michelsen's NPI (1750342390) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.