Gary Lieb, M.D.
NPI 1912935396 · Internal Medicine Physician · Camarillo, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Lieb, M.D. is a Internal Medicine Physician provider in Camarillo, CA (NPI 1912935396).
Provider details
- NPI number
- 1912935396
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- C51356 (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 · 128 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 872 | 282 |
| Rosuvastatin Calcium | 440 | 144 |
| Losartan Potassium | 403 | 138 |
| Amlodipine Besylate | 386 | 138 |
| Lisinopril | 336 | 113 |
| Levothyroxine Sodium | 335 | 108 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-28
- Last updated
- 2021-11-30
Frequently asked questions
- What is Gary Lieb's NPI number?
- Gary Lieb's National Provider Identifier (NPI) is 1912935396, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Lieb's specialty?
- Gary Lieb is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Lieb located?
- Gary Lieb's practice location on file with NPPES is 2620 Las Posas Rd, Camarillo, CA 93010-3400.
- What is Gary Lieb's phone number?
- The practice phone number listed in the NPPES registry for Gary Lieb is (805) 383-2100.
- Does Gary Lieb accept Medicare?
- Gary Lieb is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Lieb's NPI active?
- Yes — Gary Lieb's NPI (1912935396) is active in the NPPES registry as of the last update on 2021-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.