JOSEF BENJAMIN ZWASS MD
NPI 1407915002
Pediatrics - Neonatal-Perinatal Medicine in San Diego, CA
About Josef Benjamin Zwass Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOSEF BENJAMIN ZWASS MD (NPI 1407915002) is an individual neonatal-perinatal medicine provider in San Diego, California, licensed in California (G62469) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in San Diego.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Josef Benjamin Zwass Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Josef Zwass reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Diego, CA 92120
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
San Diego, CA 92115
- Reassigned Medicare billing, California enrollment
- 1,100 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.
SAN DIEGO, CA 92120
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 Josef Zwass's NPI number?
The NPI number for Josef Zwass is 1407915002. It was assigned to this individual provider in the NPPES registry on December 8, 2006.
Where is Josef Zwass located?
Josef Zwass practices at 4647 Zion Ave, San Diego, CA 92120. The listed phone number is (619) 528-5000.
What is Josef Zwass's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.
Is Josef Zwass enrolled in Medicare?
Yes. Josef Zwass is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Josef Zwass's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Josef Zwass reassigns Medicare benefits to 2 organizations: Southern California Permanente Medical Group (San Diego, CA) and Family Health Centers Of San Diego, Inc (San Diego, 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 Josef Zwass'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 Josef Zwass was last updated on December 22, 2021. 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.
# Josef Benjamin Zwass, MD · NPI 1407915002
Neonatal-Perinatal Medicine physician in San Diego, California. Individual provider, active in the CMS NPPES registry since December 8, 2006.
## Identity
- **NPI:** 1407915002 (Entity type: Individual)
- **Enumerated:** December 8, 2006
- **Primary specialty:** Pediatrics - Neonatal-Perinatal Medicine · taxonomy 2080N0001X
- **State license:** G62469 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4647 ZION AVE, San Diego, CA 92120-2507
- **Phone:** (619) 528-5000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Southern California Permanente Medical Group (NPI 1225060742, San Diego, CA); Family Health Centers Of San Diego, Inc (NPI 1023054004, San Diego, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 22, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1407915002) · Data from the CMS NPPES public registry.