JULIE ANN SOSA MD
NPI 1639150915
Surgery - Surgical Oncology in San Francisco, CA
About Julie Ann Sosa Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JULIE ANN SOSA MD (NPI 1639150915) is an individual surgical oncology provider in San Francisco, California, licensed in California (C154958) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of Johns Hopkins University School Of Medicine (1994).
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
Julie Ann Sosa 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 Julie Sosa 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
- 761 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
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.
Other Providers at the Same Location NPPES 20
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
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 Julie Sosa's NPI number?
The NPI number for Julie Sosa is 1639150915. It was assigned to this individual provider in the NPPES registry on November 14, 2005.
Where is Julie Sosa located?
Julie Sosa practices at 505 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 476-1000.
What is Julie Sosa's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgical Oncology, with taxonomy code 2086X0206X.
Is Julie Sosa enrolled in Medicare?
Yes. Julie Sosa 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 Julie Sosa's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Julie Sosa reassigns Medicare benefits to 4 organizations: Regents Of The University Of California (San Francisco, CA), Ucsf Dept Of Surgery (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, 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 Julie Sosa'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 Julie Sosa was last updated on October 26, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Julie Ann Sosa, MD · NPI 1639150915
Surgical Oncology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since November 14, 2005.
## Identity
- **NPI:** 1639150915 (Entity type: Individual)
- **Enumerated:** November 14, 2005
- **Primary specialty:** Surgery - Surgical Oncology · taxonomy 2086X0206X
- **State license:** C154958 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 505 PARNASSUS AVE, San Francisco, CA 94143-2204
- **Phone:** (415) 476-1000
## 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); Ucsf Dept Of Surgery (NPI 1477627537, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Johns Hopkins University School Of Medicine, class of 1994
## Record status
- **NPPES last updated:** October 26, 2022
- **Other identifiers:** Medicaid 001403972 (CT)
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Source: [NPI Profile](https://npiprofile.com/npi/1639150915) · Data from the CMS NPPES public registry.