MARY PETROFSKY NP
NPI 1013220359
Nurse Practitioner - Acute Care in San Francisco, CA
About Mary Petrofsky Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY PETROFSKY NP (NPI 1013220359) is an individual acute care provider in San Francisco, California, licensed in California (NP 18337) and active in the NPI registry since July 2010. She is enrolled in Medicare PECOS, maintains a secondary practice location in Stanford, and is a graduate of Other (2008).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
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
Mary Petrofsky Np 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 Mary Petrofsky 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
- 2,112 clinicians in this Medicare group
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
Emeryville, CA 94608
- Reassigned Medicare billing, California enrollment
- 4,258 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.
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.
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 Mary Petrofsky's NPI number?
The NPI number for Mary Petrofsky is 1013220359. It was assigned to this individual provider in the NPPES registry on July 15, 2010.
Where is Mary Petrofsky located?
Mary Petrofsky practices at 505 Parnassus Ave Rm M1286, San Francisco, CA 94143. The listed phone number is (415) 527-8322.
What is Mary Petrofsky's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Mary Petrofsky enrolled in Medicare?
Yes. Mary Petrofsky 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 Mary Petrofsky's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Petrofsky reassigns Medicare benefits to 4 organizations: Regents Of The University Of California (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and Stanford Health Care (Emeryville, CA). 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 Mary Petrofsky'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 Mary Petrofsky was last updated on August 6, 2023. 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.
# Mary Petrofsky, NP · NPI 1013220359
Acute Care physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since July 15, 2010.
## Identity
- **NPI:** 1013220359 (Entity type: Individual)
- **Enumerated:** July 15, 2010
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** NP 18337 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 505 PARNASSUS AVE RM M1286, San Francisco, CA 94143-2204
- **Phone:** (415) 527-8322 · **Fax:** (415) 476-0624
## 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): Regents Of The University Of California (NPI 1376613943, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); Stanford Health Care (NPI 1275076325, Emeryville, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** August 6, 2023
- **Other identifiers:** Other 1437292927 (CA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1013220359) · Data from the CMS NPPES public registry.