Gary Lieb, M.D.
Internal Medicine Physician · Camarillo, CA
Gary Lieb, M.D. is an internal medicine physician with a practice address in Camarillo, California, and NPI 1912935396, issued on Jun 28, 2006. Check the license (California C51356, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gary Lieb
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- C51356 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2620 Las Posas RD, Camarillo, CA 93010
- Phone
- (805) 383-2100
- Enumerated
- Jun 28, 2006
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (805) 445-4654
- Medicare enrollment
- Enrolled (PECOS I20041025001150); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2620 Las Posas RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Chayawatna, FNP-CNurse Practitioner1457913485
- Stephanie Lee, MDFamily Medicine Physician1922561901
Verify Gary Lieb in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C51356Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average internal medicine physician in 2024
9,589 Medicare Part D claims for 952 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 391 claims were for opioids.
Most prescribed
- Atorvastatin Calcium872 claims
- Rosuvastatin Calcium440 claims
- Losartan Potassium403 claims
- Amlodipine Besylate386 claims
- Lisinopril336 claims
- Levothyroxine Sodium335 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupCamarillo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary Lieb among 17,696 internal medicine physician records in California
Gary Lieb, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1994 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 internal medicine physician records list a practice address in Camarillo
They are 26 of the 2,656 NPPES records with a practice address in Camarillo, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Camarillo → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jeffrey Allan, MDCamarillo, CA 930101407870652
- Karen Fields, MDCamarillo, CA 930101497779656
- Afrouz Gerayli, MDCamarillo, CA 930101801044839
- Christopher Hynum, M.D.Camarillo, CA 930101588722573
- Ragaa Ibrahim, M.D.Camarillo, CA 930101730128364
- Bennet Lipper, MDCamarillo, CA 930101235129420
- Paul Morin, M.D.Camarillo, CA 930101932148525
- Elizabeth Nguyen, MDCamarillo, CA 930101770528028
Common questions
What is Gary Lieb, M.D.'s NPI number?
Gary Lieb, M.D.'s National Provider Identifier (NPI) is 1912935396, issued on Jun 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary Lieb, M.D. located?
The NPPES record lists a practice address at 2620 Las Posas RD, Camarillo, CA, 93010. Phone: (805) 383-2100. Providers update this record themselves, so call before visiting.
How can I verify Gary Lieb, M.D.'s license?
NPPES lists California license number C51356, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gary Lieb, M.D. prescribe under Medicare Part D?
In 2024, Gary Lieb, M.D. had 9,589 Medicare Part D claims for 952 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.