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YAO SUN MD
NPI 1336226273
Pediatrics - Neonatal-Perinatal Medicine in San Francisco, CA

Active since October 31, 2006PECOS Enrolled
UCSF MEDICAL CENTER CHILDRENS HOSPITAL, 505 PARNASSUS AVE, BOX 110, SAN FRANCISCO, CA 94143(415) 476-5153 Get Directions Write a Review

NPPES record last updated: April 29, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Yao Sun Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

YAO SUN MD (NPI 1336226273) is an individual neonatal-perinatal medicine provider in San Francisco, California, licensed in California (G87359) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in San Francisco.

NPPES Registry Identity

NPI1336226273
Entity TypeIndividualMale
Primary Taxonomy2080N0001X
Provider Legal NameYAO SUNCredential: MD
Location AddressUCSF MEDICAL CENTER CHILDRENS HOSPITAL, 505 PARNASSUS AVE, BOX 110San Francisco, CA 94143-0110
Mailing AddressUcsf Medical Center Childrens Hospital, 505 Parnassus Ave, Box 110San Francisco, CA 94143-0110 · (415) 476-5153
Phone(415) 476-5153
Sole ProprietorNo
Enumeration DateOctober 31, 2006
Last NPPES UpdateApril 29, 2026
NPPES CertifiedApril 29, 2026
✔ NPI 1336226273 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
License✔ Licensed in CA · G87359
Definition
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.
Also ListedPediatricsTaxonomy 208000000X · License G87359 (CA)
UCSF MEDICAL CENTER CHILDRENS HOSPITAL, San Francisco, CA 94143
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Secondary Practice Location 1

Location 11001 Potrero Ave, Bldg. 5, 6MSan Francisco, CA 94110-3518 · Phone (628) 206-8376 · Fax (628) 206-7506

Other Identifiers 1

Medicaid00G873590CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Yao Sun Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Yao Sun reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ucsf Pediatrics Associates
Same address
Pediatrics
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 1,159 clinicians in this Medicare group
NPI 1376614016 (415) 353-2000
University Of California San Francisco
Same address
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1346329380 (415) 353-2161
University Of California Sfgh Medical Group
2.9 mi
Medical Oncology
995 POTRERO AVE, BLDG.80, RM 229
San Francisco, CA 94110
  • Reassigned Medicare billing, California enrollment
  • 637 clinicians in this Medicare group
NPI 1356696215 (415) 476-4082

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LUCY S. CRAIN M. D.
Pediatrics
UCSF MEDICAL CENTER CHILDRENS HOSPITAL, 505 PARNASSUS AVE., BOX 0110
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2111
MAUREEN AN-PING SU M. D.
Pediatrics
UCSF MEDICAL CENTER CHILDRENS HOSPITAL, 505 PARNASSUSS AVE BOX 0110
SAN FRANCISCO, CA 94143
San Francisco County (415) 665-5979
STEPHANIE R. BLOOM M. D.
Pediatrics
UCSF MEDICAL CENTER CHILDRENS HOSPITAL, 400 PARNASSUS AVENUE 2ND FLOOR
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2000
JOHN ICHIRO TAKAYAMA M. D.
Pediatrics
UCSF MEDICAL CENTER CHILDRENS HOSPITAL, 400 PARNASSUS AVE 2ND FLOOR
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2211

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 Yao Sun's NPI number?

The NPI number for Yao Sun is 1336226273. It was assigned to this individual provider in the NPPES registry on October 31, 2006.

Where is Yao Sun located?

Yao Sun practices at Ucsf Medical Center Childrens Hospital 505 Parnassus Ave, Box 110, San Francisco, CA 94143. The listed phone number is (415) 476-5153.

What is Yao Sun's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Is Yao Sun enrolled in Medicare?

Yes. Yao Sun is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Yao Sun's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Yao Sun reassigns Medicare benefits to 3 organizations: Ucsf Pediatrics Associates (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and University Of California Sfgh Medical Group (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 Yao Sun'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 Yao Sun was last updated on April 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.