NPPES file of Aug 9, 2026

Karen Lin-Yee Leung, MD

Obstetrics & Gynecology Physician · Santa Rosa, CA

Karen Lin-Yee Leung, MD is an obstetrics & gynecology physician with a practice address in Santa Rosa, California, and NPI 1346206463, issued on Apr 26, 2006. Check the license (California A74370, 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
1346206463
Name
Karen Lin-Yee Leung
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
A74370 CA
Self-reported in NPPES; status is on the state search
Practice location
4655 Hoen Ave, Santa Rosa, CA 95405
Phone
(707) 545-8881
Enumerated
Apr 26, 2006
Record last updated
Feb 11, 2022
Fax
(707) 545-8585
Medicare enrollment
Enrolled (PECOS I20061013000573); accepts Medicare assignment
Medical or professional school
University Of Texas Southwestern Medical School At Dallas, 1993
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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Also registered at 4655 Hoen Ave

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

  1. James Abbott, D.D.S., M.S.Endodontics1467629386
  2. Stephen Desalvo, D.D.S.General Practice Dentistry1568783280
  3. James Forni, D.D.S.General Practice Dentistry1376532986
  4. Daniel Sullivan, DDSDentist1588703631
  5. John Tolin, DDSOral and Maxillofacial Pathology Dentistry1962628651

Verify Karen Lin-Yee Leung in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A74370
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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71% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024

282 Medicare Part D claims for 120 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.

  1. Karen Leung282
  2. Specialty average165

Most prescribed

  1. Estradiol76 claims
  2. Acyclovir56 claims
  3. Clobetasol Propionate20 claims
  4. Estring16 claims
  5. Yuvafem16 claims
  6. Fluconazole12 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 IncStockton, CA

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

Karen Lin-Yee Leung among 5,088 obstetrics & gynecology physician records in California

Karen Lin-Yee Leung, 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
  • Graduated1993 · median 2004 among the 2,700 with a school on file
  • Record last updated2022 · 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.

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

  1. Sahar Doctorvaladan, MDSanta Rosa, CA 954051285957936
  2. Lela Emad, M.D.Santa Rosa, CA 954051811902612
  3. Bobby Field, MDSanta Rosa, CA 954051699739912
  4. Louise Huang, M.D.Santa Rosa, CA 954051205948544
  5. Natasha Kahl, MDSanta Rosa, CA 954051942252911
  6. Susan Logan, M.D.Santa Rosa, CA 954051982716221
  7. Gregory Sacher, MDSanta Rosa, CA 954051972682011
  8. Estrelania Williams, M.D.Santa Rosa, CA 954051164816252

Common questions

What is Karen Lin-Yee Leung, MD's NPI number?

Karen Lin-Yee Leung, MD's National Provider Identifier (NPI) is 1346206463, issued on Apr 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Karen Lin-Yee Leung, MD located?

The NPPES record lists a practice address at 4655 Hoen Ave, Santa Rosa, CA, 95405. Phone: (707) 545-8881. Providers update this record themselves, so call before visiting.

How can I verify Karen Lin-Yee Leung, MD's license?

NPPES lists California license number A74370, 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 Karen Lin-Yee Leung, MD prescribe under Medicare Part D?

In 2024, Karen Lin-Yee Leung, MD had 282 Medicare Part D claims for 120 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.