What is Chrisy Mafnas's NPI number?

Chrisy Mafnas's National Provider Identifier (NPI) is 1922328541, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Chrisy Mafnas's specialty?

Chrisy Mafnas is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).

Where is Chrisy Mafnas located?

Chrisy Mafnas's practice location on file with NPPES is 700 Lawrence Expy, Santa Clara, CA 95051-5173.

What is Chrisy Mafnas's phone number?

The practice phone number listed in the NPPES registry for Chrisy Mafnas is (408) 851-1000.

Does Chrisy Mafnas accept Medicare?

Chrisy Mafnas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Chrisy Mafnas's NPI active?

Yes — Chrisy Mafnas's NPI (1922328541) is active in the NPPES registry as of the last update on 2025-08-14.

IndividualActiveAccepts Medicare

Chrisy Mafnas, M.D.

NPI 1922328541 · Anatomic Pathology Physician · Santa Clara, CA

Chrisy Mafnas, M.D. is a Anatomic Pathology Physician provider in Santa Clara, CA (NPI 1922328541).

Provider details

NPI number: 1922328541
Entity type: Individual
Primary specialty: Anatomic Pathology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Female
Sole proprietor: No

Practice location

700 Lawrence Expy

Santa Clara, CA 95051-5173

Phone: (408) 851-1000

Approximate (ZIP-level) locationGet directions

More CA providers

Mailing address

700 Lawrence Expy

Santa Clara, CA 95051-5173

Specialties & taxonomies

Anatomic Pathology PhysicianPrimary207ZP0101XLicense A129190 (CA)
Allopathic & Osteopathic Physicians
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(78/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
16 yrs in NPPES registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2010-06-04
Last updated: 2025-08-14
Certified: 2025-08-14

Frequently asked questions

What is Chrisy Mafnas's NPI number?: Chrisy Mafnas's National Provider Identifier (NPI) is 1922328541, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Chrisy Mafnas's specialty?: Chrisy Mafnas is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).
Where is Chrisy Mafnas located?: Chrisy Mafnas's practice location on file with NPPES is 700 Lawrence Expy, Santa Clara, CA 95051-5173.
What is Chrisy Mafnas's phone number?: The practice phone number listed in the NPPES registry for Chrisy Mafnas is (408) 851-1000.
Does Chrisy Mafnas accept Medicare?: Chrisy Mafnas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Chrisy Mafnas's NPI active?: Yes — Chrisy Mafnas's NPI (1922328541) is active in the NPPES registry as of the last update on 2025-08-14.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions