NPPES file of Aug 9, 2026

Simone Louise Katz, M.D.

Obstetrics & Gynecology Physician · San Leandro, CA

Simone Louise Katz, M.D. is an obstetrics & gynecology physician with a practice address in San Leandro, California, and NPI 1770661522, issued on Nov 1, 2006. Check the license (California A70483, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1770661522
Name
Simone Louise Katz
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
A70483 CA
Self-reported in NPPES; status is on the state search
Practice location
2500 Merced St, San Leandro, CA 94577
Phone
(510) 454-1000
Enumerated
Nov 1, 2006
Record last updated
Dec 8, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicaid ID
00A704830 CA
Medicare enrollment
Enrolled (PECOS I20110524000513); accepts Medicare assignment
Medical or professional school
University Of Vermont College Of Medicine, 1998
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →

Also registered at 2500 Merced St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Rabiatu Abdullah, M.D.Emergency Medicine Physician1497833248
  2. Scott Abramson, M.D.Neurology Physician1891873667
  3. Jayaprada Achanta, M.D.Anesthesiology Physician1053463851
  4. Kristi Adachi, PHARMDPharmacist1396456737
  5. Mary Grace Aguayo, CRTCertified Respiratory Therapist1467923730
  6. Jatinder AhluwaliaPharmacist1508391483

Verify Simone Louise Katz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A70483    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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79% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024

295 Medicare Part D claims for 115 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.

  1. Simone Katz295
  2. Specialty average165

Most prescribed

  1. Estradiol96 claims
  2. Yuvafem26 claims
  3. Clobetasol Propionate24 claims
  4. Acyclovir21 claims
  5. Estring14 claims
  6. Nystatin-Triamcinolone11 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

  1. Permanente Medical Group IncOakland, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Simone Louise Katz among 5,088 obstetrics & gynecology physician records in California

Simone Louise Katz, M.D. 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
  • Graduated1998 · median 2004 among the 2,700 with a school on file
  • Record last updated2021 · 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 San Leandro → Obstetrics & Gynecology Physician nationwide →

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Linda Catherine Degusta, M.D.San Leandro, CA 945771578635397
  2. Colleen Kavanagh, M.D.San Leandro, CA 945771174608830
  3. Marie La Cour, M.D.San Leandro, CA 945771144372947
  4. Jolyn Leung, M.D.San Leandro, CA 945771629372180
  5. Sarah Mark-Drasin, M.D.San Leandro, CA 945771700957610
  6. John Polito, M.D.San Leandro, CA 945771952489965
  7. Robert Rubeshaw, M.D.San Leandro, CA 945771629156484
  8. Katharine Simmons, M.D.San Leandro, CA 945771508008624

Common questions

What is Simone Louise Katz, M.D.'s NPI number?

Simone Louise Katz, M.D.'s National Provider Identifier (NPI) is 1770661522, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Simone Louise Katz, M.D. located?

The NPPES record lists a practice address at 2500 Merced St, San Leandro, CA, 94577. Phone: (510) 454-1000. Providers update this record themselves, so call before visiting.

How can I verify Simone Louise Katz, M.D.'s license?

NPPES lists California license number A70483, 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 Simone Louise Katz, M.D. prescribe under Medicare Part D?

In 2024, Simone Louise Katz, M.D. had 295 Medicare Part D claims for 115 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.