Monica P. Leff, MD
Obstetrics & Gynecology Physician · Long Beach, CA
Monica P. Leff, MD is an obstetrics & gynecology physician with a practice address in Long Beach, California, and NPI 1962476028, issued on Feb 15, 2006. Check the license (California G41128, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Monica P. Leff
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G41128 CA
Self-reported in NPPES; status is on the state search - Practice location
- 790 E Willow St, Long Beach, CA 90806
- Phone
- (562) 595-7709
- Enumerated
- Feb 15, 2006
- Record last updated
- Apr 11, 2024
- Fax
- (562) 595-7262
- Medicare enrollment
- Enrolled (PECOS I20070419000750); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1978
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 790 E Willow St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Seth Kogan, M.D.Specialist1780652040
- Phillip Ta, M.D.Physical Medicine & Rehabilitation Physician1477932259
- Yuliya Turiy, MDPediatric Cardiology Physician1306088018
Verify Monica P. Leff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G41128Check 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% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
251 Medicare Part D claims for 84 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Progesterone40 claims
- Estradiol (Twice Weekly)38 claims
- Estradiol30 claims
- Dotti18 claims
- Alendronate Sodium14 claims
- Raloxifene Hcl13 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.
Industry payments in 2024: $121.83
1 payment: food and beverage; the largest payer was Genzyme Corporation. The 21,429 providers of this specialty with any payment received $1,030.61 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.
Bills Medicare through one group practice
- The Roads Foundation, IncCompton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Monica P. Leff among 5,088 obstetrics & gynecology physician records in California
Monica P. Leff, MD is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% 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, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1978 · median 2004 among the 2,700 with a school on file
- Record last updated2024 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Long Beach → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- John Cardin, M.D.Long Beach, CA 908061467411744
- Laurie Endo, MDLong Beach, CA 908061841254190
- Julie Franklin, M.D.Long Beach, CA 908061710935150
- Carol Grabowski, M.D., INCLong Beach, CA 908061043280373
- Helena Humphrey, M.D.Long Beach, CA 908061497712012
- Maurice Lam, M.D.Long Beach, CA 908061144231143
- James Long, MDLong Beach, CA 908061316039696
- Sandra Makela, MDLong Beach, CA 908061780658849
Common questions
What is Monica P. Leff, MD's NPI number?
Monica P. Leff, MD's National Provider Identifier (NPI) is 1962476028, issued on Feb 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Monica P. Leff, MD located?
The NPPES record lists a practice address at 790 E Willow St, Long Beach, CA, 90806. Phone: (562) 595-7709. Providers update this record themselves, so call before visiting.
How can I verify Monica P. Leff, MD's license?
NPPES lists California license number G41128, 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 Monica P. Leff, MD prescribe under Medicare Part D?
In 2024, Monica P. Leff, MD had 251 Medicare Part D claims for 84 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.