Stefanie Masako Ueda, M.D.
Gynecologic Oncology Physician · San Francisco, CA
Stefanie Masako Ueda, M.D. is a gynecologic oncology physician with a practice address in San Francisco, California, and NPI 1780748087, issued on Dec 20, 2006. Check the license (California A96341, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stefanie Masako Ueda
- Credential
- M.D.
- Primary taxonomy
- Gynecologic Oncology Physician 207VX0201X
- License numbers
- A96341 CA
13748 HI
Self-reported in NPPES; status is on the state search - Practice location
- 1600 Divisadero St, San Francisco, CA 94115
- Phone
- (415) 885-7561
- Enumerated
- Dec 20, 2006
- Record last updated
- Jul 8, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100907000679); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2002
- 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 1600 Divisadero St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Betsy Althaus, PHARM.D.Pharmacist1366650657
- Mehrdad Arjomandi, MDCritical Care Medicine (Internal Medicine) Physician1912951153
- Chloe Atreya, MD, PHDMedical Oncology Physician1326058777
- Ronald Balassanian, MDAnatomic Pathology & Clinical Pathology Physician1043282379
- Christopher Benz, M.D.Medical Oncology Physician1457381014
- Emily Bergsland, MDMedical Oncology Physician1295792729
Verify Stefanie Masako Ueda in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A96341Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average gynecologic oncology physician in 2024
213 Medicare Part D claims for 53 beneficiaries, against an average of 195 among the 1,475 providers of this specialty who prescribed in Part D.
Most prescribed
- Anastrozole19 claims
- Ondansetron Hcl15 claims
- Dexamethasone12 claims
- Prochlorperazine Maleate11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 74.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $55.71
1 payment: food and beverage; the largest payer was Ethicon US, 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 2 group practices
- Ucsf Medical Group Business ServicesSan Francisco, CA
- University OF California San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stefanie Masako Ueda among 176 gynecologic oncology physician records in California
Stefanie Masako Ueda, 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2002 · median 2004 among the 131 with a school on file
- Record last updated2013 · 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 San Francisco → Gynecologic Oncology Physician nationwide →
The 8 gynecologic oncology physician records with the nearest ZIP codes
- Lisa Sandles, MDSan Francisco, CA 941151932287562
- Jenta Shen, M.D.San Francisco, CA 941171881692002
- John Chan, MDSan Francisco, CA 941091962596551
- Lejla Delic, M.D.San Francisco, CA 941091063615185
- Stephanie Cham, M.D.San Francisco, CA 941431033597117
- Lee-May Chen, MDSan Francisco, CA 941431902861883
- Katherine Fuh, MDSan Francisco, CA 941431740462316
- Andrea Nanez, M.D.San Francisco, CA 941431952837098
Common questions
What is Stefanie Masako Ueda, M.D.'s NPI number?
Stefanie Masako Ueda, M.D.'s National Provider Identifier (NPI) is 1780748087, issued on Dec 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stefanie Masako Ueda, M.D. located?
The NPPES record lists a practice address at 1600 Divisadero St, San Francisco, CA, 94115. Phone: (415) 885-7561. Providers update this record themselves, so call before visiting.
How can I verify Stefanie Masako Ueda, M.D.'s license?
NPPES lists California license number A96341, 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 Stefanie Masako Ueda, M.D. prescribe under Medicare Part D?
In 2024, Stefanie Masako Ueda, M.D. had 213 Medicare Part D claims for 53 beneficiaries; the average among gynecologic oncology physician prescribers was 195. Part D covers Medicare prescriptions only.
What is Stefanie Masako Ueda, M.D.'s MIPS final score?
The 2023 MIPS final score is 74.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.