Karen Chu, MD
Obstetrics & Gynecology Physician · San Francisco, CA
Karen Chu, MD is an obstetrics & gynecology physician with a practice address in San Francisco, California, and NPI 1053436899, issued on Mar 20, 2007. Check the license (California A84215, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen Chu
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A84215 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Daniel Burnham CT Ste 230C, San Francisco, CA 94109
- Phone
- (415) 563-9000
- Enumerated
- Mar 20, 2007
- Record last updated
- Apr 9, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (415) 563-1232
- Medicare enrollment
- Enrolled (PECOS I20081021000223); may accept Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 1999
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Verify Karen Chu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A84215Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
172 Medicare Part D claims for 81 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Estradiol31 claims
- Triamcinolone Acetonide21 claims
- Estring13 claims
- Alendronate Sodium12 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: $269.22
11 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. 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
- Regents Univ OF California UcsfSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Chu among 5,088 obstetrics & gynecology physician records in California
Karen Chu, 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 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 38% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1999 · median 2004 among the 2,700 with a school on file
- Record last updated2018 · 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 Francisco → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Anna Buchsbaum, M.D.San Francisco, CA 941091689806317
- Izumi Cabrera, M.D.San Francisco, CA 941091346430584
- Jason Dimsdale, MDSan Francisco, CA 941091457333973
- Geraldine EkpoSan Francisco, CA 941091356503643
- Stacy Fang, M.D.San Francisco, CA 941091558763250
- Laurie Green, M.D.San Francisco, CA 941091679641658
- Sarah Hebl, M.D.San Francisco, CA 941091649536483
- Maureen Khoo, MDSan Francisco, CA 941091932293560
Common questions
What is Karen Chu, MD's NPI number?
Karen Chu, MD's National Provider Identifier (NPI) is 1053436899, issued on Mar 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Karen Chu, MD located?
The NPPES record lists a practice address at 1 Daniel Burnham CT Ste 230C, San Francisco, CA, 94109. Phone: (415) 563-9000. Providers update this record themselves, so call before visiting.
How can I verify Karen Chu, MD's license?
NPPES lists California license number A84215, 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 Chu, MD prescribe under Medicare Part D?
In 2024, Karen Chu, MD had 172 Medicare Part D claims for 81 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.