Gilbert Andersen, M.D.
NPI 1821091836 · Internal Medicine Physician · Lompoc, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gilbert Andersen, M.D. is a Internal Medicine Physician provider in Lompoc, CA (NPI 1821091836).
Provider details
- NPI number
- 1821091836
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A29916 (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
21 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 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 140 | 14 |
| Amlodipine Besylate | 76 | 11 |
| Lisinopril | 75 | — |
| Atorvastatin Calcium | 72 | — |
| Simvastatin | 61 | — |
| Furosemide | 60 | — |
| Tamsulosin Hcl | 50 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-23
- Last updated
- 2016-11-29
Frequently asked questions
- What is Gilbert Andersen's NPI number?
- Gilbert Andersen's National Provider Identifier (NPI) is 1821091836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gilbert Andersen's specialty?
- Gilbert Andersen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gilbert Andersen located?
- Gilbert Andersen's practice location on file with NPPES is 136 N 3rd St, Lompoc, CA 93436-7002.
- What is Gilbert Andersen's phone number?
- The practice phone number listed in the NPPES registry for Gilbert Andersen is (805) 736-1253.
- Does Gilbert Andersen accept Medicare?
- Gilbert Andersen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gilbert Andersen's NPI active?
- Yes — Gilbert Andersen's NPI (1821091836) is active in the NPPES registry as of the last update on 2016-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.