Gary S. Leiserowitz, M.D.
Gynecologic Oncology Physician · Sacramento, CA
Gary S. Leiserowitz, M.D. is a gynecologic oncology physician with a practice address in Sacramento, California, and NPI 1871575142, issued on Nov 14, 2005. Check the license (California C407800, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gary S. Leiserowitz
- Credential
- M.D.
- Primary taxonomy
- Gynecologic Oncology Physician 207VX0201X
- License number
- C407800 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4860 Y St, Sacramento, CA 95817
- Phone
- (916) 734-6930
- Enumerated
- Nov 14, 2005
- Record last updated
- Aug 22, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (916) 734-6666
- Medicaid ID
- 00C407800 CA
- Medicare enrollment
- Enrolled (PECOS I20081211000026); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 1981
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gynecologic oncology physician records → All 176 in California → Look up another NPI →
Also registered at 4860 Y St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susan Abbott Rogge, NPWomen's Health Nurse Practitioner1245215581
- Alireza Abidi, M.D.Gynecologic Oncology Physician1215919477
- Tessnim Ahmad, MDGlaucoma Specialist (Ophthalmology) Physician1275161150
- Carol Albanese, M.D.Physical Medicine & Rehabilitation Physician1992786016
- Wesam AldulemeRegistered Respiratory Therapist1881176543
- Fatima Ali, MDAllergy & Immunology (Internal Medicine) Physician1093045023
Verify Gary S. Leiserowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C407800Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average gynecologic oncology physician in 2024
43 Medicare Part D claims for 14 beneficiaries, against an average of 195 among the 1,475 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Anastrozole12 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: $39.99
1 payment: food and beverage; the largest payer was GlaxoSmithKline, LLC. The 1,199 providers of this specialty with any payment received $6,387.20 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
- Regents OF The Univ OF CASacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary S. Leiserowitz among 176 gynecologic oncology physician records in California
Gary S. Leiserowitz, M.D. is one of 176 gynecologic oncology physician records with a practice address in California. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1981 · median 2004 among the 131 with a school on file
- Record last updated2011 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VX0201X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gynecologic Oncology Physician providers in California
There are 176 gynecologic oncology physician records in California.
All 176 in California → Every provider in Sacramento → Gynecologic Oncology Physician nationwide →
The 8 gynecologic oncology physician records with the nearest ZIP codes
- Alireza Abidi, M.D.Sacramento, CA 958171215919477
- Edwin Alvarez, M.D.Sacramento, CA 958171710197330
- Alice Barr, MDSacramento, CA 958171982109286
- Rebecca Brooks, MDSacramento, CA 958171316155781
- Hui ChenSacramento, CA 958171891056677
- Katherine Jane Chua, MDSacramento, CA 958171265922025
- Vanessa Kennedy, MDSacramento, CA 958171528229507
- Nancy Nguyen, MDSacramento, CA 958171518379171
Common questions
What is Gary S. Leiserowitz, M.D.'s NPI number?
Gary S. Leiserowitz, M.D.'s National Provider Identifier (NPI) is 1871575142, issued on Nov 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gary S. Leiserowitz, M.D. located?
The NPPES record lists a practice address at 4860 Y St, Sacramento, CA, 95817. Phone: (916) 734-6930. Providers update this record themselves, so call before visiting.
How can I verify Gary S. Leiserowitz, M.D.'s license?
NPPES lists California license number C407800, 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 S. Leiserowitz, M.D. prescribe under Medicare Part D?
In 2024, Gary S. Leiserowitz, M.D. had 43 Medicare Part D claims for 14 beneficiaries; the average among gynecologic oncology physician prescribers was 195. 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.