DR. MAURICE S ZWASS MD
NPI 1285699413
Pediatrics - Pediatric Critical Care Medicine in San Francisco, CA
About Dr. Maurice S Zwass Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MAURICE S ZWASS MD (NPI 1285699413) is an individual pediatric critical care medicine provider in San Francisco, California, licensed in California (G48316) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Maurice S Zwass Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Maurice Zwass 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 94143
- Reassigned Medicare billing, California enrollment
- 1,159 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
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 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 Maurice Zwass's NPI number?
The NPI number for Maurice Zwass is 1285699413. It was assigned to this individual provider in the NPPES registry on April 19, 2006.
Where is Maurice Zwass located?
Maurice Zwass practices at 505 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 476-4029.
What is Maurice Zwass's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.
Is Maurice Zwass enrolled in Medicare?
Yes. Maurice Zwass is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Maurice Zwass's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Maurice Zwass reassigns Medicare benefits to 3 organizations: Ucsf Pediatrics Associates (San Francisco, CA), University Anesthesia Medical Group (San Francisco, CA) and University Of California San Francisco (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 Maurice 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 Maurice Zwass was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Maurice S Zwass, MD · NPI 1285699413
Pediatric Critical Care Medicine physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since April 19, 2006.
## Identity
- **NPI:** 1285699413 (Entity type: Individual)
- **Enumerated:** April 19, 2006
- **Primary specialty:** Pediatrics - Pediatric Critical Care Medicine · taxonomy 2080P0203X
- **State license:** G48316 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 505 PARNASSUS AVE, San Francisco, CA 94143-2204
- **Phone:** (415) 476-4029 · **Fax:** (415) 476-4150
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Ucsf Pediatrics Associates (NPI 1376614016, San Francisco, CA); University Anesthesia Medical Group (NPI 1528137296, San Francisco, CA); University Of California San Francisco (NPI 1164512851, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Medicaid 00G483160 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1285699413) · Data from the CMS NPPES public registry.