Karen Anne Westermoe, MD
Gynecology Physician · San Dimas, CA
Karen Anne Westermoe, MD is a gynecology physician with a practice address in San Dimas, California, and NPI 1366593949, issued on Jan 12, 2007. Check the license (California G57488, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen Anne Westermoe
- Credential
- MD
- Primary taxonomy
- Gynecology Physician 207VG0400X
- License number
- G57488 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1119 Via Verde, San Dimas, CA 91773
- Phone
- (909) 592-9846
- Enumerated
- Jan 12, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (909) 592-2837
- Medicare enrollment
- Enrolled (PECOS I20090115000633); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 1984
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gynecology physician records → All 369 in California → Look up another NPI →
Verify Karen Anne Westermoe in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G57488Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average gynecology physician in 2024
738 Medicare Part D claims for 157 beneficiaries, against an average of 299 among the 1,919 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Estradiol128 claims
- Alendronate Sodium38 claims
- Estradiol (Twice Weekly)35 claims
- Eszopiclone32 claims
- Nitrofurantoin Mono-Macro27 claims
- Progesterone27 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: $14.97
1 payment: food and beverage; the largest payer was Exeltis, USA Inc. The 1,398 providers of this specialty with any payment received $2,469.88 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.
Karen Anne Westermoe among 369 gynecology physician records in California
Karen Anne Westermoe, MD is one of 369 gynecology physician records with a practice address in California. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 60% of them.
- NPI issued2007 · 60% of these records are older, 24% newer
- In a Medicare fileYes · 60% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated1984 · median 1995 among the 141 with a school on file
- Record last updated2007 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VG0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gynecology Physician providers in California
There are 369 gynecology physician records in California.
All 369 in California → Every provider in San Dimas → Gynecology Physician nationwide →
The 8 gynecology physician records with the nearest ZIP codes
- Arthur Escamillo, MDWest Covina, CA 917901437247400
- Akbar Omar, M.D.West Covina, CA 917901629137427
- Darryl Rodrigues, M.D.West Covina, CA 917901477582781
- Thomas Tam, M.D.Monterey Park, CA 917541770638033
- Thomas Easter, M.D.Rancho Cucamonga, CA 917301922038595
- Duong Phung, M.D.Chino, CA 917101588725659
- Jennifer Anderson, M.D.Chula Vista, CA 919131831318229
- Thomas Reedy, MDJamul, CA 919351265871230
Common questions
What is Karen Anne Westermoe, MD's NPI number?
Karen Anne Westermoe, MD's National Provider Identifier (NPI) is 1366593949, issued on Jan 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Karen Anne Westermoe, MD located?
The NPPES record lists a practice address at 1119 Via Verde, San Dimas, CA, 91773. Phone: (909) 592-9846. Providers update this record themselves, so call before visiting.
How can I verify Karen Anne Westermoe, MD's license?
NPPES lists California license number G57488, 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 Anne Westermoe, MD prescribe under Medicare Part D?
In 2024, Karen Anne Westermoe, MD had 738 Medicare Part D claims for 157 beneficiaries; the average among gynecology physician prescribers was 299. 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.