CHRISY T MAFNAS M.D.
NPI 1922328541
Pathology - Anatomic Pathology in Santa Clara, CA

Q: What is Chrisy Mafnas's NPI number?

The NPI number for Chrisy Mafnas is 1922328541. It was assigned to this individual provider in the NPPES registry on June 4, 2010.

Q: What is Chrisy Mafnas's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology, with taxonomy code 207ZP0101X.

Q: When was this NPI record last updated?

The NPPES record for Chrisy Mafnas was last updated on August 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.

Active since June 04, 2010PECOS EnrolledAccepts Medicare Assignment

700 LAWRENCE EXPY, SANTA CLARA, CA 95051(408) 851-1000 Get Directions Write a Review

NPPES record last updated: August 14, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 14, 2025, Dec 17, 2021 (2 updates tracked since 2021).

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About Chrisy T Mafnas M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CHRISY T MAFNAS M.D. (NPI 1922328541) is an individual anatomic pathology provider in Santa Clara, California, licensed in California (A129190) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS and is a graduate of University Of Hawaii John A. Burns School Of Medicine (2010).

NPPES Registry Identity

NPI1922328541

Entity TypeIndividualFemale

Primary Taxonomy207ZP0101X

Provider Legal NameCHRISY T MAFNASCredential: M.D.

Location Address700 LAWRENCE EXPYSanta Clara, CA 95051-5173

Mailing Address700 Lawrence ExpySanta Clara, CA 95051-5173

Phone(408) 851-1000

Sole ProprietorNo

Medical School CMSUniversity Of Hawaii John A. Burns School Of MedicineGraduated 2010

Enumeration DateJune 4, 2010

Last NPPES UpdateAugust 14, 20252 updates tracked since enumeration

NPPES CertifiedAugust 14, 2025

✔ NPI 1922328541 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPathology · Anatomic PathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZP0101X

License✔ Licensed in CA · A129190

Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

700 LAWRENCE EXPY, Santa Clara, CA 95051

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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

Chrisy T Mafnas M.d. 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.

PECOS PAC ID6608156468

PECOS Enrollment IDI20161213002082

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Chrisy Mafnas reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Permanente Medical Group Inc

0.4 mi

Internal Medicine

710 LAWRENCE EXPRESSWAY
Santa Clara, CA 95051

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1073606299 (408) 851-1000

County Of Santa Clara

2.8 mi

Federally Qualified Health Center (FQHC)

660 S FAIR OAKS AVE, VHC SUNNYVALE
Sunnyvale, CA 94086

Reassigned Medicare billing, California enrollment
Also billed through NPI 1588721500 (California)
2,460 clinicians in this Medicare group

NPI 1528053139 (408) 885-5000

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 95051 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$156.67 typical visit price

range $70.37 – $206.04

Typical copayment $39.16 (range $17.59 – $51.51)

Most-billed visit code 99204

Established Patient

$121.77 typical visit price

range $23.96 – $169.60

Typical copayment $30.44 (range $5.99 – $42.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

HUI WU MD

Hospitalist