ANNIE GUAN MSN, APRN, AGACNP-BC
NPI 1326815341
Nurse Practitioner - Acute Care in Pasadena, CA
About Annie Guan Msn, Aprn, Agacnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANNIE GUAN MSN, APRN, AGACNP-BC (NPI 1326815341) is an individual acute care provider in Pasadena, California, licensed in California (95026618) and active in the NPI registry since December 2023. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Annie Guan Msn, Aprn, Agacnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Annie Guan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Pasadena, CA 91105
- Reassigned Medicare billing, California enrollment
- 3 clinicians in this Medicare group
Glendale, CA 91206
- Reassigned Medicare billing, California enrollment
- 2,584 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 91105 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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PASADENA, CA 91105
PASADENA, CA 91105
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 Annie Guan's NPI number?
The NPI number for Annie Guan is 1326815341. It was assigned to this individual provider in the NPPES registry on December 11, 2023.
Where is Annie Guan located?
Annie Guan practices at 301 S Fair Oaks Ave Ste 305, Pasadena, CA 91105. The listed phone number is (626) 440-7325.
What is Annie Guan's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Annie Guan enrolled in Medicare?
Yes. Annie Guan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Annie Guan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Annie Guan reassigns Medicare benefits to 2 organizations: Edward A. Mena, M.D., Inc (Pasadena, CA) and Faculty Physicians And Surgeons Of Llusm (Glendale, 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 Annie Guan'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 Annie Guan was last updated on April 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Annie Guan, MSN, APRN, AGACNP-BC · NPI 1326815341
Acute Care physician in Pasadena, California. Individual provider, active in the CMS NPPES registry since December 11, 2023.
## Identity
- **NPI:** 1326815341 (Entity type: Individual)
- **Enumerated:** December 11, 2023
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** 95026618 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 301 S FAIR OAKS AVE STE 305, Pasadena, CA 91105-2562
- **Phone:** (626) 440-7325
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Edward A. Mena, M.D., Inc (NPI 1811032550, Pasadena, CA); Faculty Physicians And Surgeons Of Llusm (NPI 1508255175, Glendale, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 3, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1326815341) · Data from the CMS NPPES public registry.