DR. ZACHARY IAN LERNER MD
NPI 1275275620
Anesthesiology in San Francisco, CA
About Dr. Zachary Ian Lerner Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ZACHARY IAN LERNER MD (NPI 1275275620) is an individual anesthesiology provider in San Francisco, California, licensed in California (A186875) and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of Louisiana State University School Of Medicine In New Orleans (2022).
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 and accepts Medicare assignment
Dr. Zachary Ian Lerner 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
3Medicare enrollment records show Zachary Lerner 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
- 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
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
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 Zachary Lerner's NPI number?
The NPI number for Zachary Lerner is 1275275620. It was assigned to this individual provider in the NPPES registry on April 7, 2022.
Where is Zachary Lerner located?
Zachary Lerner practices at 521 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 476-9035.
What is Zachary Lerner's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Zachary Lerner enrolled in Medicare?
Yes. Zachary Lerner 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 Zachary Lerner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Zachary Lerner reassigns Medicare benefits to 3 organizations: University Anesthesia Medical Group (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (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 Zachary Lerner'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 Zachary Lerner was last updated on August 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 53 days 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. Zachary Ian Lerner, MD · NPI 1275275620
Anesthesiology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since April 7, 2022.
## Identity
- **NPI:** 1275275620 (Entity type: Individual)
- **Enumerated:** April 7, 2022
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A186875 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 521 PARNASSUS AVE, San Francisco, CA 94143-2206
- **Phone:** (415) 476-9035 · **Fax:** (415) 353-9163
## 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): 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) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Louisiana State University School Of Medicine In New Orleans, class of 2022
## Record status
- **NPPES last updated:** August 30, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1275275620) · Data from the CMS NPPES public registry.