NAYELA NAZ KEEN M.D.
NPI 1285763433
Radiology - Diagnostic Radiology in San Francisco, CA
About Nayela Naz Keen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NAYELA NAZ KEEN M.D. (NPI 1285763433) is an individual diagnostic radiology provider in San Francisco, California, licensed in California (IN PROCESS) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS and is a graduate of Duke University School Of Medicine (2005).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Nayela Naz Keen M.d. 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
3Medicare enrollment records show Nayela Keen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94116
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
San Francisco, CA 94110
- Reassigned Medicare billing, California enrollment
- 336 clinicians in this Medicare group
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 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
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 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 Nayela Keen's NPI number?
The NPI number for Nayela Keen is 1285763433. It was assigned to this individual provider in the NPPES registry on March 5, 2007. The provider is also known as Nayela Naz Khan M.D..
Where is Nayela Keen located?
Nayela Keen practices at 505 Parnassus Ave Box 0628, San Francisco, CA 94143. The listed phone number is (415) 443-5534.
What is Nayela Keen's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Nayela Keen enrolled in Medicare?
Yes. Nayela Keen 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 Nayela Keen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nayela Keen reassigns Medicare benefits to 3 organizations: Permanente Medical Group Inc (San Francisco, CA), University Of California Sfgh Medical Group (San Francisco, CA) and Lpch Medical Group Div Of Lucile (Palo Alto, 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 Nayela Keen'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 Nayela Keen was last updated on January 10, 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.
# Nayela Naz Keen, M.D. · NPI 1285763433
Diagnostic Radiology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since March 5, 2007.
## Identity
- **NPI:** 1285763433 (Entity type: Individual)
- **Enumerated:** March 5, 2007
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** IN PROCESS (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 505 PARNASSUS AVE, BOX 0628, San Francisco, CA 94143-2204
- **Phone:** (415) 443-5534
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Permanente Medical Group Inc (NPI 1841373800, San Francisco, CA); University Of California Sfgh Medical Group (NPI 1063487122, San Francisco, CA); Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Duke University School Of Medicine, class of 2005
## Record status
- **NPPES last updated:** January 10, 2022
---
Source: [NPI Profile](https://npiprofile.com/npi/1285763433) · Data from the CMS NPPES public registry.