JUSTIN SPENCER LIBAW
NPI 1932594165
Anesthesiology in San Francisco, CA
About Justin Spencer Libaw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JUSTIN SPENCER LIBAW (NPI 1932594165) is an individual anesthesiology provider in San Francisco, California, licensed in California (A149025) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS and is a graduate of Icahn School Of Medicine At Mount Sinai (2015).
NPPES Registry Identity
Specialties & Licenses 2
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
Justin Spencer Libaw 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 Justin Libaw 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 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 723 clinicians in this Medicare group
San Francisco, CA 94110
- Reassigned Medicare billing, California enrollment
- 842 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 16
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
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 Justin Libaw's NPI number?
The NPI number for Justin Libaw is 1932594165. It was assigned to this individual provider in the NPPES registry on April 3, 2015.
Where is Justin Libaw located?
Justin Libaw practices at 513 Parnassus Ave # S436, San Francisco, CA 94143. The listed phone number is (415) 514-3781.
What is Justin Libaw's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Justin Libaw enrolled in Medicare?
Yes. Justin Libaw 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 Justin Libaw's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Justin Libaw reassigns Medicare benefits to 4 organizations: Ucsf Medical Group Business Services (San Francisco, CA), University Of California San Francisco (San Francisco, CA), University Anesthesia Medical Group (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 Justin Libaw'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 Justin Libaw was last updated on October 3, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Justin Spencer Libaw · NPI 1932594165
Anesthesiology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since April 3, 2015.
## Identity
- **NPI:** 1932594165 (Entity type: Individual)
- **Enumerated:** April 3, 2015
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A149025 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 513 PARNASSUS AVE # S436, San Francisco, CA 94143-2205
- **Phone:** (415) 514-3781
## 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): Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); University Of California San Francisco (NPI 1164512851, San Francisco, CA); University Anesthesia Medical Group (NPI 1528137296, San Francisco, CA); University Of California Sfgh Medical Group (NPI 1174598296, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Icahn School Of Medicine At Mount Sinai, class of 2015
## Record status
- **NPPES last updated:** October 3, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1932594165) · Data from the CMS NPPES public registry.