What is Aras Mattis's NPI number?

Aras Mattis's National Provider Identifier (NPI) is 1326374869, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Aras Mattis's specialty?

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

Where is Aras Mattis located?

Aras Mattis's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143-2204.

What is Aras Mattis's phone number?

The practice phone number listed in the NPPES registry for Aras Mattis is (415) 353-8987.

Does Aras Mattis accept Medicare?

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

Is Aras Mattis's NPI active?

Yes — Aras Mattis's NPI (1326374869) is active in the NPPES registry as of the last update on 2009-10-18.

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Aras Mattis, M.D., PH.D.

NPI 1326374869 · Anatomic Pathology Physician · San Francisco, CA

Aras Mattis, M.D., PH.D. is a Anatomic Pathology Physician provider in San Francisco, CA (NPI 1326374869).

Provider details

NPI number: 1326374869
Entity type: Individual
Primary specialty: Anatomic Pathology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D., PH.D.
Sex: Male
Sole proprietor: No
License: A108366 (CA)

Practice location

505 Parnassus Ave

M585

San Francisco, CA 94143-2204

Phone: (415) 353-8987

Fax: (415) 353-8987

Street-level locationGet directions

More CA providers

Mailing address

505 Parnassus Ave

San Francisco, CA 94143-2204

Specialties & taxonomies

Anatomic Pathology PhysicianPrimary207ZP0101XLicense A108366 (CA)
Allopathic & Osteopathic Physicians

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

Profile Score

Detailed profile(87/100 index)

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

Registry tenure33% of score
17 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
1 documented practice location
Open Payments transparency13% of score
Has Open Payments disclosures (2024)

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.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$6,496 across 4 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2009-10-18
Last updated: 2009-10-18

Frequently asked questions

What is Aras Mattis's NPI number?: Aras Mattis's National Provider Identifier (NPI) is 1326374869, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Aras Mattis's specialty?: Aras Mattis is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).
Where is Aras Mattis located?: Aras Mattis's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143-2204.
What is Aras Mattis's phone number?: The practice phone number listed in the NPPES registry for Aras Mattis is (415) 353-8987.
Does Aras Mattis accept Medicare?: Aras Mattis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Aras Mattis's NPI active?: Yes — Aras Mattis's NPI (1326374869) is active in the NPPES registry as of the last update on 2009-10-18.

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

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Transparency — industry payments

Frequently asked questions