DR. JACK YUNGZEN JENG MD
NPI 1174917207
Anesthesiology in South San Francisco, CA
About Dr. Jack Yungzen Jeng Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JACK YUNGZEN JENG MD (NPI 1174917207) is an individual anesthesiology provider in South San Francisco, California, licensed in California (A148416) and active in the NPI registry since March 2015. He is enrolled in Medicare PECOS and is a graduate of Mayo Medical School (2015).
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
Dr. Jack Yungzen Jeng 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 Jack Jeng 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
- 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
San Francisco, CA 94116
- Reassigned Medicare billing, California enrollment
- 20,078 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.
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.
SOUTH SAN FRANCISCO, CA 94080
SOUTH SAN FRANCISCO, CA 94080
SOUTH SAN FRANCISCO, CA 94080
SOUTH SAN FRANCISCO, CA 94080
SOUTH SAN FRANCISCO, CA 94080
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 Jack Jeng's NPI number?
The NPI number for Jack Jeng is 1174917207. It was assigned to this individual provider in the NPPES registry on March 26, 2015.
Where is Jack Jeng located?
Jack Jeng practices at 1200 El Camino Real, South San Francisco, CA 94080. The listed phone number is (480) 710-7756.
What is Jack Jeng's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Jack Jeng enrolled in Medicare?
Yes. Jack Jeng 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 Jack Jeng's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jack Jeng reassigns Medicare benefits to 4 organizations: University Anesthesia Medical Group (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and Permanente Medical Group Inc (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 Jack Jeng'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 Jack Jeng was last updated on August 11, 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.
# Dr. Jack Yungzen Jeng, MD · NPI 1174917207
Anesthesiology physician in South San Francisco, California. Individual provider, active in the CMS NPPES registry since March 26, 2015.
## Identity
- **NPI:** 1174917207 (Entity type: Individual)
- **Enumerated:** March 26, 2015
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A148416 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1200 EL CAMINO REAL, South San Francisco, CA 94080-3299
- **Phone:** (480) 710-7756
## 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): 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); Permanente Medical Group Inc (NPI 1841373800, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Mayo Medical School, class of 2015
## Record status
- **NPPES last updated:** August 11, 2023
---
Source: [NPI Profile](https://npiprofile.com/npi/1174917207) · Data from the CMS NPPES public registry.