NPPES file of Aug 9, 2026

Michelle Mulder, MD

Surgical Oncology Physician · San Francisco, CA

Michelle Mulder, MD is a surgical oncology physician with a practice address in San Francisco, California, and NPI 1851787675, issued on Apr 8, 2015. Check the license (California A176951, 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
1851787675
Name
Michelle Mulder
Credential
MD
Primary taxonomy
Surgical Oncology Physician 2086X0206X
License numbers
A176951 CA
176951 CA
Self-reported in NPPES; status is on the state search
Practice location
1600 Divisadero St FL 4, San Francisco, CA 94143
Phone
(415) 353-7687
Enumerated
Apr 8, 2015
Record last updated
Nov 3, 2022
Medicare enrollment
Enrolled (PECOS I20220901003283); accepts Medicare assignment
Medical or professional school
Wayne State University School Of Medicine, 2015
Telehealth
Offers telehealth (CMS)
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.
Download card Updates feed

Also registered at 1600 Divisadero St FL 4

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

  1. Valerie Armstrong, MDSurgical Oncology Physician1871122911
  2. Kerwin Cruz De La Rosa, MDSurgery Physician1184171795
  3. Stacy Fuller Baecker, PA-CPhysician Assistant1043543473
  4. Jasleen Kukreja, M.D.Surgery Physician1174556351
  5. Kathryn Menut, MD, MSSurgery Physician1821433285
  6. Nicholas Murphy, MDPulmonary Disease Physician1043770118

Verify Michelle Mulder in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A176951
    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

33% fewer Medicare Part D claims than the average surgical oncology physician in 2024

58 Medicare Part D claims for 30 beneficiaries, against an average of 87 among the 1,237 providers of this specialty who prescribed in Part D. 14 claims were for opioids.

  1. Michelle Mulder58
  2. Specialty average87

Most prescribed

  1. Oxycodone Hcl12 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 3 group practices

  1. Ucsf Dept OF SurgerySan Francisco, CA
  2. Ucsf Medical Group Business ServicesBurlingame, CA
  3. Unmc PhysiciansOmaha, NE

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

Michelle Mulder among 250 surgical oncology physician records in California

Michelle Mulder, MD is one of 250 surgical oncology physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 82% of them.

  • NPI issued2015 · 82% of these records are older, 12% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2015 · median 2004 among the 184 with a school on file
  • Record last updated2022 · 44% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086X0206X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgical Oncology Physician providers in California

There are 250 surgical oncology physician records in California.

The 8 surgical oncology physician records with the nearest ZIP codes

  1. Valerie Armstrong, MDSan Francisco, CA 941431871122911
  2. Jessica Dzubnar Barker, MDSan Francisco, CA 941431700349750
  3. Laura Esserman, MDSan Francisco, CA 941431679537971
  4. Cheryl Ewing, MDSan Francisco, CA 941431710935028
  5. Sarah HartmanSan Francisco, CA 941431558822122
  6. Ivy HuangSan Francisco, CA 941431043601727
  7. Jordan Jackson, MDSan Francisco, CA 941431902268360
  8. Kimberly Kirkwood, MDSan Francisco, CA 941431669437810

Common questions

What is Michelle Mulder, MD's NPI number?

Michelle Mulder, MD's National Provider Identifier (NPI) is 1851787675, issued on Apr 8, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Michelle Mulder, MD located?

The NPPES record lists a practice address at 1600 Divisadero St FL 4, San Francisco, CA, 94143. Phone: (415) 353-7687. Providers update this record themselves, so call before visiting.

How can I verify Michelle Mulder, MD's license?

NPPES lists California license number A176951, 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 Michelle Mulder, MD prescribe under Medicare Part D?

In 2024, Michelle Mulder, MD had 58 Medicare Part D claims for 30 beneficiaries; the average among surgical oncology physician prescribers was 87. 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.