Robert Lefkowitz, M.D.
Obstetrics Physician · Ventura, CA
Robert Lefkowitz, M.D. is an obstetrics physician with a practice address in Ventura, California, and NPI 1780748111, issued on Dec 20, 2006. Check the license (California G279520, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert Lefkowitz
- Credential
- M.D.
- Primary taxonomy
- Obstetrics Physician 207VX0000X
- License number
- G279520 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3291 Loma Vista RD, Ventura, CA 93003
- Phone
- (805) 652-6556
- Enumerated
- Dec 20, 2006
- Record last updated
- Jul 13, 2023
- Entity
- Type 1 · individual
8 nearest obstetrics physician records → All 174 in California → Look up another NPI →
Also registered at 3291 Loma Vista RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brad Adler, M.D.Anatomic Pathology Physician1003979618
- Alejandro Andrade, M.D.Family Medicine Physician1770713190
- James Appel, MDFamily Medicine Physician1083939706
- David Araujo, M.D.Family Medicine Physician1114955994
- Maria Arizmendi, M.D.Pediatrics Physician1366641961
- Ralph Armstrong, M.D.Psychiatry Physician1518016443
Verify Robert Lefkowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G279520Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average obstetrics physician in 2024
105 Medicare Part D claims for 16 beneficiaries, against an average of 218 among the 863 providers of this specialty who prescribed in Part D.
Most prescribed
- Nitrofurantoin Mono-Macro15 claims
- Sumatriptan Succinate15 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 87.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $17.81
1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 679 providers of this specialty with any payment received $826.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Robert Lefkowitz among 174 obstetrics physician records in California
Robert Lefkowitz, M.D. is one of 174 obstetrics physician records with a practice address in California. 67% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 56% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2023 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VX0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics Physician providers in California
There are 174 obstetrics physician records in California.
All 174 in California → Every provider in Ventura → Obstetrics Physician nationwide →
The 8 obstetrics physician records with the nearest ZIP codes
- Cheryl Geer, D.O.Camarillo, CA 930101437211687
- Frederick Kelley, M.D.Santa Paula, CA 930601174687560
- Jennifer Butler, MDOrange, CA 928681598780769
- Cortney Eakin, MDOrange, CA 928681851787238
- Laura Fitzmaurice, M.D.Orange, CA 928681982865044
- Griselda Reyes, MDOrange, CA 928681073000980
- Ana Sanchez, M.D.Orange, CA 928681871597690
- Stephanie Warsheski, M.D.Orange, CA 928681033538608
Common questions
What is Robert Lefkowitz, M.D.'s NPI number?
Robert Lefkowitz, M.D.'s National Provider Identifier (NPI) is 1780748111, issued on Dec 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Lefkowitz, M.D. located?
The NPPES record lists a practice address at 3291 Loma Vista RD, Ventura, CA, 93003. Phone: (805) 652-6556. Providers update this record themselves, so call before visiting.
How can I verify Robert Lefkowitz, M.D.'s license?
NPPES lists California license number G279520, 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 Robert Lefkowitz, M.D. prescribe under Medicare Part D?
In 2024, Robert Lefkowitz, M.D. had 105 Medicare Part D claims for 16 beneficiaries; the average among obstetrics physician prescribers was 218. Part D covers Medicare prescriptions only.
What is Robert Lefkowitz, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.