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MATTHEW SIRI D.O
NPI 1801282264
Pediatrics - Pediatric Emergency Medicine in Fremont, CA

Active since April 13, 2015PECOS EnrolledAccepts Medicare Assignment
3200 KEARNEY ST, FREMONT, CA 94538(510) 490-1222 Get Directions Write a Review

NPPES record last updated: March 18, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 17, 2021, Mar 25, 2016 (2 updates tracked since 2016).

About Matthew Siri D.o NPPES

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

MATTHEW SIRI D.O (NPI 1801282264) is an individual pediatric emergency medicine provider in Fremont, California, licensed in California (20A16359) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS and is a graduate of Other (2018).

NPPES Registry Identity

NPI1801282264
Entity TypeIndividualMale
Primary Taxonomy2080P0204X
Provider Legal NameMATTHEW SIRICredential: D.O
Location Address3200 KEARNEY STFremont, CA 94538-2299
Mailing Address325 Distel CirLos Altos, CA 94022-1408 · (510) 490-1222
Phone(510) 490-1222
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateApril 13, 2015
Last NPPES UpdateMarch 18, 20222 updates tracked since enumeration
NPPES CertifiedMarch 18, 2022
✔ NPI 1801282264 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric Emergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080P0204X
License✔ Licensed in CA · 20A16359
Definition
A pediatrician who has special qualifications to manage emergencies in infants and children.
3200 KEARNEY ST, Fremont, CA 94538
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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

Matthew Siri D.o 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 ID7517205347
PECOS Enrollment IDI20190220002058
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

3

Medicare enrollment records show Matthew Siri reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Sutter Bay Medical Foundation
13 mi
Multi-Specialty
795 EL CAMINO REAL
Palo Alto, CA 94301
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
NPI 1013950807 (650) 321-4121
Permanente Medical Group Inc
14 mi
Internal Medicine
1190 VETERANS BLVD
Redwood City, CA 94063
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1639252604 (650) 299-2000
Valley Children's Medical Group
54 mi
Pediatrics
1524 MCHENRY AVE, SUITE 550
Modesto, CA 95350
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Valley Childrens Medical Group
  • 387 clinicians in this Medicare group
NPI 1437555265 (559) 353-5010

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

DR. LAKSHMI SRINIVASAN MD
Internal Medicine (Endocrinology, Diabetes & Metabolism)
3200 KEARNEY ST
FREMONT, CA 94538
Alameda County (510) 490-1222
THOMAS KIM
Orthopaedic Surgery (Hand Surgery)
3200 KEARNEY ST
FREMONT, CA 94538
Alameda County (510) 490-1222
DR. DANIEL KRASS AU.D.
Audiologist-Hearing Aid Fitter
3200 KEARNEY ST
FREMONT, CA 94538
Alameda County (510) 498-2681
STEPHANIE CHIANG MD
Pediatrics
3200 KEARNEY ST
FREMONT, CA 94538
Alameda County (510) 490-1222
STEVEN BARTIS DPM
Podiatrist
3200 KEARNEY ST
FREMONT, CA 94538
Alameda County (510) 490-1222
NANCY WANG MD
Otolaryngology (Plastic Surgery within the Head & Neck)
3200 KEARNEY ST
FREMONT, CA 94538
Alameda County (510) 490-1222
ZAHRA PIRANI
Emergency Medicine (Pediatric Emergency Medicine)
3200 KEARNEY ST
FREMONT, CA 94538
Alameda County (510) 490-1222
NATASHA BEILIN MD
Pediatrics
3200 KEARNEY ST
FREMONT, CA 94538
Alameda County (510) 490-1222

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 Siri's NPI number?

The NPI number for Matthew Siri is 1801282264. It was assigned to this individual provider in the NPPES registry on April 13, 2015.

Where is Matthew Siri located?

Matthew Siri practices at 3200 Kearney St, Fremont, CA 94538. The listed phone number is (510) 490-1222.

What is Matthew Siri's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.

Is Matthew Siri enrolled in Medicare?

Yes. Matthew Siri 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 organizations bill Medicare for Matthew Siri's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Siri reassigns Medicare benefits to 3 organizations: Sutter Bay Medical Foundation (Palo Alto, CA), Permanente Medical Group Inc (Redwood City, CA) and Valley Children's Medical Group (Modesto, CA). Each 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 Siri'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 Siri was last updated on March 18, 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.