1. Home
  2. Directory
  3. California
  4. San Francisco
  5. Pathology
  6. NPI Profile

DR. JAMES CRAIG MATHEWS MD
NPI 1851520878
Pathology - Anatomic Pathology & Clinical Pathology in San Francisco, CA

Active since July 12, 2009PECOS EnrolledAccepts Medicare Assignment
350 SAINT JOSEPHS AVE, SAN FRANCISCO, CA 94115(415) 833-3870 Get Directions Write a Review

NPPES record last updated: January 13, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 13, 2022, Dec 11, 2018 (2 updates tracked since 2018).

About Dr. James Craig Mathews Md NPPES

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

DR. JAMES CRAIG MATHEWS MD (NPI 1851520878) is an individual anatomic pathology & clinical pathology provider in San Francisco, California, licensed in California (A127119) and active in the NPI registry since July 2009. He is enrolled in Medicare PECOS and is a graduate of Saint Louis University School Of Medicine (2009).

NPPES Registry Identity

NPI1851520878
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameDR. JAMES CRAIG MATHEWSCredential: MD
Location Address350 SAINT JOSEPHS AVESan Francisco, CA 94115-3255
Mailing Address4501 Sand Creek RdAntioch, CA 94531-8687 · (925) 813-6500
Phone(415) 833-3870
Sole ProprietorYes
Medical School CMSSaint Louis University School Of MedicineGraduated 2009
Enumeration DateJuly 12, 2009
Last NPPES UpdateJanuary 13, 20222 updates tracked since enumeration
NPPES CertifiedJanuary 13, 2022
✔ NPI 1851520878 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in CA · A127119
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.
350 SAINT JOSEPHS AVE, San Francisco, CA 94115
Open in Google Maps ↗

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

Dr. James Craig Mathews 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.

PECOS PAC ID5294958955
PECOS Enrollment IDI20140527001081
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 Reassignment

Medicare enrollment records show James Mathews reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
0.1 mi
Internal Medicine
2238 GEARY
San Francisco, CA 94116
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1841373800 (415) 833-2200

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.

Pathology examination of tissue using a microscope, intermediate complexity 88305
A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.
41 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94115 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SAMUEL YU PT
Physical Therapist
350 SAINT JOSEPHS AVE
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-4421
MR. JAY ALLAN JOHANNI RN
Registered Nurse (Continuing Education/Staff Development)
350 SAINT JOSEPHS AVE
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-3727
NANCY MICHIE OKUMURA
Physical Therapist
350 SAINT JOSEPHS AVE
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-4683
MISS KA YAN CHIU MPT
Physical Therapist
350 SAINT JOSEPHS AVE
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-9001
DR. SARAH CATHERINE CHERNY M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
350 SAINT JOSEPHS AVE, KAISER DEPARTMENT OF PATHOLOGY
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-3870
AMANDA JANE BORGEN MD
Pathology (Anatomic Pathology & Clinical Pathology)
350 SAINT JOSEPHS AVE
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-3870
FRANK VERNUSKY PT
Physical Therapist
350 SAINT JOSEPHS AVE
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-4684

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 James Mathews's NPI number?

The NPI number for James Mathews is 1851520878. It was assigned to this individual provider in the NPPES registry on July 12, 2009.

Where is James Mathews located?

James Mathews practices at 350 Saint Josephs Ave, San Francisco, CA 94115. The listed phone number is (415) 833-3870.

What is James Mathews's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is James Mathews enrolled in Medicare?

Yes. James Mathews 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 organization bills Medicare for James Mathews's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Mathews reassigns Medicare benefits to Permanente Medical Group Inc (San Francisco, CA). The 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 James Mathews'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 James Mathews was last updated on January 13, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.