MAHNAZ SHAHIDI-ASL MD
NPI 1801082201
Pathology - Anatomic Pathology & Clinical Pathology in Napa, CA
About Mahnaz Shahidi-asl Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAHNAZ SHAHIDI-ASL MD (NPI 1801082201) is an individual anatomic pathology & clinical pathology provider in Napa, California, licensed in California (A93938) and active in the NPI registry since September 2007. She is enrolled in Medicare PECOS and is a graduate of Other (1990).
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 and accepts Medicare assignment
Mahnaz Shahidi-asl 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
5Medicare enrollment records show Mahnaz Shahidi-asl reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Napa, CA 94558
- Reassigned Medicare billing, California enrollment
- 5 clinicians in this Medicare group
Concord, CA 94520
- Reassigned Medicare billing, California enrollment
- 18 clinicians in this Medicare group
Wildomar, CA 92595
- Reassigned Medicare billing, California enrollment
- 4 clinicians in this Medicare group
Murrieta, CA 92563
- Reassigned Medicare billing, California enrollment
- 240 clinicians in this Medicare group
Oceanside, CA 92056
- Reassigned Medicare billing, California enrollment
- 7 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 17
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 94558 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.
NAPA, CA 94558
NAPA, CA 94558
NAPA, CA 94558
NAPA, CA 94558
NAPA, CA 94558
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 Mahnaz Shahidi-asl's NPI number?
The NPI number for Mahnaz Shahidi-asl is 1801082201. It was assigned to this individual provider in the NPPES registry on September 19, 2007.
Where is Mahnaz Shahidi-asl located?
Mahnaz Shahidi-asl practices at 1000 Trancas St, Napa, CA 94558. The listed phone number is (707) 252-4411.
What is Mahnaz Shahidi-asl's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is Mahnaz Shahidi-asl enrolled in Medicare?
Yes. Mahnaz Shahidi-asl 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 Mahnaz Shahidi-asl's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mahnaz Shahidi-asl reassigns Medicare benefits to 5 organizations: Pacific Path Inc (Napa, CA), Contra Costa Pathology Associates (Concord, CA), Medical Laboratory Services Medical Group, Inc. (Wildomar, CA), United Medical Doctors (Murrieta, CA) and North Coast Pathology Medical Group Inc (Oceanside, 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 Mahnaz Shahidi-asl'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 Mahnaz Shahidi-asl was last updated on July 15, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Mahnaz Shahidi-Asl, MD · NPI 1801082201
Anatomic Pathology & Clinical Pathology physician in Napa, California. Individual provider, active in the CMS NPPES registry since September 19, 2007.
## Identity
- **NPI:** 1801082201 (Entity type: Individual)
- **Enumerated:** September 19, 2007
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **State license:** A93938 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1000 TRANCAS ST, Napa, CA 94558-2906
- **Phone:** (707) 252-4411
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Pacific Path Inc (NPI 1821148883, Napa, CA); Contra Costa Pathology Associates (NPI 1417361411, Concord, CA); Medical Laboratory Services Medical Group, Inc. (NPI 1063477461, Wildomar, CA); United Medical Doctors (NPI 1770559981, Murrieta, CA); North Coast Pathology Medical Group Inc (NPI 1033123377, Oceanside, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1990
## Record status
- **NPPES last updated:** July 15, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1801082201) · Data from the CMS NPPES public registry.