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

MATTHEW H RILEY D.O.
NPI 1922395490
Internal Medicine in San Francisco, CA

Active since July 06, 2011PECOS Enrolled
450 STANYAN ST., ROOM 503, SAN FRANCISCO, CA 94117(415) 750-5909(415) 750-5910 Get Directions Write a Review

NPPES record last updated: May 17, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 17, 2016, Feb 11, 2016 (2 updates tracked since 2016).

About Matthew H Riley D.o. NPPES

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

MATTHEW H RILEY D.O. (NPI 1922395490) is an individual internal medicine provider in San Francisco, California, licensed in California (20A13448) and active in the NPI registry since July 2011. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1922395490
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMATTHEW H RILEYCredential: D.O.
Location Address450 STANYAN ST., ROOM 503San Francisco, CA 94117
Mailing Address450 Stanyan St., Room 503San Francisco, CA 94117 · (415) 750-5909 · Fax (415) 750-5910
Phone(415) 750-5909
Fax(415) 750-5910
Sole ProprietorYes
Enumeration DateJuly 6, 2011
Last NPPES UpdateMay 17, 20162 updates tracked since enumeration
✔ NPI 1922395490 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 20A13448
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
450 STANYAN ST., San Francisco, CA 94117
Open in Google Maps ↗

Other Identifiers 1

Medicare UPINRES000IL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Matthew H Riley D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Matthew Riley reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Access Primary Care Physicians, Inc.
363 mi
Family Medicine
9209 COLIMA RD STE 4400
Whittier, CA 90605
  • Reassigned Medicare billing, California enrollment
  • 27 clinicians in this Medicare group
NPI 1750858510 (833) 260-3358

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 94117 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 5

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

DR. NATALIE N CHARLTON M.D.
Internal Medicine
450 STANYAN ST., ROOM 503
SAN FRANCISCO, CA 94117
San Francisco County (415) 750-5909
DR. PAMELA G TIEN PHARM.D
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
450 STANYAN ST.
SAN FRANCISCO, CA 94117
San Francisco County (415) 750-5717
ANINDITA CHAKRABARTI M.D.
Internal Medicine
450 STANYAN ST., ROOM 503
SAN FRANCISCO, CA 94117
San Francisco County (415) 750-5909
ELIZABETH R. JENSEN D.O.
Hospitalist
450 STANYAN ST., ROOM 503
SAN FRANCISCO, CA 94117
San Francisco County (415) 750-5909
EVGENIYA KRAPIVINSKY M.D.
Internal Medicine
450 STANYAN ST., ROOM 503
SAN FRANCISCO, CA 94117
San Francisco County (415) 750-5909

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 Matthew Riley's NPI number?

The NPI number for Matthew Riley is 1922395490. It was assigned to this individual provider in the NPPES registry on July 6, 2011.

Where is Matthew Riley located?

Matthew Riley practices at 450 Stanyan St. Room 503, San Francisco, CA 94117. The listed phone number is (415) 750-5909.

What is Matthew Riley's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Matthew Riley enrolled in Medicare?

Yes. Matthew Riley is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Matthew Riley's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Riley reassigns Medicare benefits to Access Primary Care Physicians, Inc. (Whittier, 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 Matthew Riley'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 Matthew Riley was last updated on May 17, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.