DR. CAROLYN K PAN MD
NPI 1083803621
Ophthalmology in Stanford, CA
About Dr. Carolyn K Pan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CAROLYN K PAN MD (NPI 1083803621) is an individual ophthalmology provider in Stanford, California, licensed in California (A116645) and active in the NPI registry since October 2007. She is enrolled in Medicare PECOS and is a graduate of Wayne State University School Of Medicine (2007).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Dr. Carolyn K Pan 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
2Medicare enrollment records show Carolyn Pan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Palo Alto, CA 94306
- Reassigned Medicare billing, California enrollment
- 2,460 clinicians in this Medicare group
Lancaster, CA 93535
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: County Of Los Angeles
- 1,939 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.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94305 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
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 Carolyn Pan's NPI number?
The NPI number for Carolyn Pan is 1083803621. It was assigned to this individual provider in the NPPES registry on October 19, 2007.
Where is Carolyn Pan located?
Carolyn Pan practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Carolyn Pan's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Carolyn Pan enrolled in Medicare?
Yes. Carolyn Pan 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 Carolyn Pan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carolyn Pan reassigns Medicare benefits to 2 organizations: County Of Santa Clara (Palo Alto, CA) and County Of Los Angeles Auditor Controller (Lancaster, 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 Carolyn Pan'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 Carolyn Pan was last updated on October 19, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Dr. Carolyn K Pan, MD · NPI 1083803621
Ophthalmology physician in Stanford, California. Individual provider, active in the CMS NPPES registry since October 19, 2007.
## Identity
- **NPI:** 1083803621 (Entity type: Individual)
- **Enumerated:** October 19, 2007
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** A116645 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## 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): County Of Santa Clara (NPI 1144330614, Palo Alto, CA); County Of Los Angeles Auditor Controller (NPI 1366453045, Lancaster, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 2007
## Record status
- **NPPES last updated:** October 19, 2016
- **Other identifiers:** Medicaid 0A1166450 (CA); Medicare PIN FC717Y (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1083803621) · Data from the CMS NPPES public registry.