DR. LING-LIN PAI MD PHD
NPI 1487231312
Pathology - Anatomic Pathology in San Francisco, CA
About Dr. Ling-lin Pai Md Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LING-LIN PAI MD PHD (NPI 1487231312) is an individual anatomic pathology provider in San Francisco, California, licensed in California (A209543) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS, maintains a secondary practice location in Philadelphia, and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses 3
Other Names 1
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. Ling-lin Pai Md Phd 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
2Medicare enrollment records show Ling-lin Pai reassigns Medicare billing to 2 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
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94143 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Ling-lin Pai's NPI number?
The NPI number for Ling-lin Pai is 1487231312. It was assigned to this individual provider in the NPPES registry on March 26, 2021. The provider is also known as Emily Pai.
Where is Ling-lin Pai located?
Ling-lin Pai practices at 505 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 353-1613.
What is Ling-lin Pai's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology, with taxonomy code 207ZP0101X.
Is Ling-lin Pai enrolled in Medicare?
Yes. Ling-lin Pai 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 Ling-lin Pai's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ling-lin Pai reassigns Medicare benefits to 2 organizations: Ucsf Medical Group Business Services (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 Ling-lin Pai'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 Ling-lin Pai was last updated on May 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Ling-Lin Pai, MD PHD · NPI 1487231312
Anatomic Pathology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since March 26, 2021.
## Identity
- **NPI:** 1487231312 (Entity type: Individual)
- **Enumerated:** March 26, 2021
- **Primary specialty:** Pathology - Anatomic Pathology · taxonomy 207ZP0101X
- **State license:** A209543 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 505 PARNASSUS AVE, San Francisco, CA 94143-2204
- **Phone:** (415) 353-1613
## 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:** 2 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) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** May 26, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1487231312) · Data from the CMS NPPES public registry.