CLARISSA KATHERINE CALDERON-MEZA FNP-C
NPI 1700449162
Nurse Practitioner - Family in San Francisco, CA
About Clarissa Katherine Calderon-meza Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CLARISSA KATHERINE CALDERON-MEZA FNP-C (NPI 1700449162) is an individual family provider in San Francisco, California, licensed in California (95019721) and active in the NPI registry since April 2019. She is enrolled in Medicare PECOS, maintains a secondary practice location in Round Rock, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
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
Clarissa Katherine Calderon-meza Fnp-c 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 Clarissa Calderon-meza 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 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
- 2,112 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
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 94122 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 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Clarissa Calderon-meza's NPI number?
The NPI number for Clarissa Calderon-meza is 1700449162. It was assigned to this individual provider in the NPPES registry on April 20, 2019.
Where is Clarissa Calderon-meza located?
Clarissa Calderon-meza practices at 840 Irving St, San Francisco, CA 94122. The listed phone number is (888) 663-6331.
What is Clarissa Calderon-meza's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Clarissa Calderon-meza enrolled in Medicare?
Yes. Clarissa Calderon-meza 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 Clarissa Calderon-meza's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Clarissa Calderon-meza reassigns Medicare benefits to 3 organizations: Ucsf Medical Group Business Services (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Regents Of The University Of California (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 Clarissa Calderon-meza's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Clarissa Calderon-meza accept?
Health plans from Oscar Insurance Company list Clarissa Calderon-meza as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Clarissa Calderon-meza was last updated on June 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Clarissa Katherine Calderon-Meza, FNP-C · NPI 1700449162
Family physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since April 20, 2019.
## Identity
- **NPI:** 1700449162 (Entity type: Individual)
- **Enumerated:** April 20, 2019
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 95019721 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 840 IRVING ST, San Francisco, CA 94122-2311
- **Phone:** (888) 663-6331 · **Fax:** (415) 252-7176
## 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): Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); University Of California San Francisco (NPI 1164512851, San Francisco, CA); Regents Of The University Of California (NPI 1376613943, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** June 20, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1700449162) · Data from the CMS NPPES public registry.