Registry data as of Aug 27, 2026

Samuel Yu, MD

Obstetrics & Gynecology Physician · Fremont, CA

Samuel Yu, MD is an obstetrics & gynecology physician with a practice address in Fremont, California, and NPI 1588749253, issued on Oct 25, 2006. Check the license (California A51167, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1588749253
Name
Samuel Yu
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
A51167 CA
Self-reported in NPPES; status is on the state search
Practice location
39400 Paseo Padre Pkwy, Fremont, CA 94538
Phone
(510) 795-3000
Enumerated
Oct 25, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 39400 Paseo Padre Pkwy

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

  1. Denise Agatep, LCSWCounselor1164584900
  2. Ujwala Agharkar, MDChild & Adolescent Psychiatry Physician1073685723
  3. Dolly Ahluwalia, RDRegistered Dietitian1659429157
  4. Tabassum Alam, MDHospitalist Physician1306921069
  5. Mary Alyono, MDAnesthesiology Physician1477631059
  6. Stephanie Aoki, PHDPsychologist1427721216

Verify Samuel Yu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A51167
    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.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

2.0 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024

385 Medicare Part D claims for 126 beneficiaries, against an average of 188 among the 27,363 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. Samuel Yu385
  2. Specialty average188

Most prescribed

  1. Estradiol131 claims
  2. Fluconazole33 claims
  3. Estring22 claims
  4. Progesterone20 claims
  5. Medroxyprogesterone Acetate17 claims
  6. Yuvafem16 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: $8.44

1 payment, mostly food and beverage; the largest payer was Organon Llc. The 20,757 providers of this specialty with any payment received $1,147.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Samuel Yu$8.44
  2. Specialty average$1,147.37

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital or facility affiliation

  1. Permanente Medical Group IncRedwood City, CA

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Obstetrics & Gynecology Physician providers in California

There are 5,004 obstetrics & gynecology physician records in California.

Other obstetrics & gynecology physician records in California

  1. Ingrid Aalami, MDSan Jose, CA1952376550
  2. Avisa Abaian- Eagar, M.D.Orange, CA1316057755
  3. Derek Abbassi, MDWalnut Creek, CA1841364155
  4. Nicole Abell, DOVentura, CA1811243603
  5. Zachary AbelsonLos Angeles, CA1689237414
  6. Sina Abhari, MDNewport Beach, CA1073955290
  7. Ray Abinader, M.D.Loma Linda, CA1770901548
  8. Tarek Abou El Kheir, M.D.San Bernardino, CA1477521789
  9. Nada Abou-HaibaLos Angeles, CA1134067549
  10. Ariel Abrahams, MDDowney, CA1376726174

Common questions

What is Samuel Yu, MD's NPI number?

Samuel Yu, MD's National Provider Identifier (NPI) is 1588749253, issued on Oct 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Samuel Yu, MD located?

The NPPES record lists a practice address at 39400 Paseo Padre Pkwy, Fremont, CA, 94538. Phone: (510) 795-3000. Providers update this record themselves, so call before visiting.

How can I verify Samuel Yu, MD's license?

NPPES lists California license number A51167, 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 Samuel Yu, MD prescribe under Medicare Part D?

In 2024, Samuel Yu, MD had 385 Medicare Part D claims for 126 beneficiaries; the average among obstetrics & gynecology physician prescribers was 188. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.