DR. MICHELLE MULDER MD
NPI 1851787675
Surgery - Surgical Oncology in San Francisco, CA
About Dr. Michelle Mulder Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHELLE MULDER MD (NPI 1851787675) is an individual surgical oncology provider in San Francisco, California, licensed in California (A176951) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS and is a graduate of Wayne State University School Of Medicine (2015).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Michelle Mulder Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Michelle Mulder reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 761 clinicians in this Medicare group
Omaha, NE 68198
- Reassigned Medicare billing, Nebraska enrollment
- 2,154 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 9
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94143 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Michelle Mulder's NPI number?
The NPI number for Michelle Mulder is 1851787675. It was assigned to this individual provider in the NPPES registry on April 8, 2015.
Where is Michelle Mulder located?
Michelle Mulder practices at 1600 Divisadero St Fl 4, San Francisco, CA 94143. The listed phone number is (415) 353-7687.
What is Michelle Mulder's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgical Oncology, with taxonomy code 2086X0206X.
Is Michelle Mulder enrolled in Medicare?
Yes. Michelle Mulder is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Michelle Mulder's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michelle Mulder reassigns Medicare benefits to 4 organizations: University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA), Ucsf Dept Of Surgery (San Francisco, CA) and Unmc Physicians (Omaha, NE). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michelle Mulder's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Michelle Mulder was last updated on November 3, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Michelle Mulder, MD · NPI 1851787675
Surgical Oncology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since April 8, 2015.
## Identity
- **NPI:** 1851787675 (Entity type: Individual)
- **Enumerated:** April 8, 2015
- **Primary specialty:** Surgery - Surgical Oncology · taxonomy 2086X0206X
- **State license:** A176951 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1600 DIVISADERO ST FL 4, San Francisco, CA 94143-3010
- **Phone:** (415) 353-7687
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); Ucsf Dept Of Surgery (NPI 1477627537, San Francisco, CA); Unmc Physicians (NPI 1417912114, Omaha, NE) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 2015
## Record status
- **NPPES last updated:** November 3, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1851787675) · Data from the CMS NPPES public registry.