KATHRYN SULLIVAN
NPI 1972966083
Internal Medicine in San Francisco, CA
About Kathryn Sullivan NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHRYN SULLIVAN (NPI 1972966083) is an individual internal medicine provider in San Francisco, California, licensed in California (A154680) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS and is a graduate of University Of Chicago, Pritzker School Of Medicine (2016).
NPPES Registry Identity
Specialties & Licenses
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
Kathryn Sullivan 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 Kathryn Sullivan 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
- 723 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.
Areas of Expertise CMS Part B claims 2
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.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Kathryn Sullivan's NPI number?
The NPI number for Kathryn Sullivan is 1972966083. It was assigned to this individual provider in the NPPES registry on April 5, 2016.
Where is Kathryn Sullivan located?
Kathryn Sullivan practices at 505 Parnassus Ave Rm M1097, San Francisco, CA 94143. The listed phone number is (415) 476-0735.
What is Kathryn Sullivan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Kathryn Sullivan enrolled in Medicare?
Yes. Kathryn Sullivan 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 Kathryn Sullivan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kathryn Sullivan reassigns Medicare benefits to 4 organizations: Regents Of The University Of California (San Francisco, CA), University Anesthesia Medical Group (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 Kathryn Sullivan'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 Kathryn Sullivan was last updated on March 4, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Kathryn Sullivan · NPI 1972966083
Internal Medicine physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since April 5, 2016.
## Identity
- **NPI:** 1972966083 (Entity type: Individual)
- **Enumerated:** April 5, 2016
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A154680 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 505 PARNASSUS AVE RM M1097, San Francisco, CA 94143-2204
- **Phone:** (415) 476-0735
## 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 Anesthesia Medical Group (NPI 1528137296, 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:** University Of Chicago, Pritzker School Of Medicine, class of 2016
## Record status
- **NPPES last updated:** March 4, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1972966083) · Data from the CMS NPPES public registry.