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MATTHEW GARRETT ONG MFT
NPI 1972736379
Marriage & Family Therapist in Oakland, CA

Active since September 01, 2009PECOS Enrolled
5275 CLAREMONT AVE, OAKLAND, CA 94618(510) 428-3885(510) 601-3913 Get Directions Write a Review

NPPES record last updated: July 16, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 16, 2026, Apr 10, 2018 (2 updates tracked since 2018).

About Matthew Garrett Ong Mft NPPES

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

MATTHEW GARRETT ONG MFT (NPI 1972736379) is an individual marriage & family therapist in Oakland, California, licensed in California (MFT85039) and active in the NPI registry since September 2009. He is enrolled in Medicare PECOS, maintains a secondary practice location in Oakland, and is a graduate of Other (2009).

NPPES Registry Identity

NPI1972736379
Entity TypeIndividualMale
Primary Taxonomy106H00000X
Provider Legal NameMATTHEW GARRETT ONGCredential: MFT
Location Address5275 CLAREMONT AVEOakland, CA 94618-1032
Mailing Address5275 Claremont AveOakland, CA 94618-1032 · (510) 428-3885 · Fax (510) 603-3913
Phone(510) 428-3885
Fax(510) 601-3913
Sole ProprietorNo
Medical School CMSOtherGraduated 2009
Enumeration DateSeptember 1, 2009
Last NPPES UpdateJuly 16, 20262 updates tracked since enumeration
NPPES CertifiedJuly 16, 2026
✔ NPI 1972736379 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMarriage & Family TherapistBehavioral Health & Social Service Providers
Taxonomy Code106H00000X
License✔ Licensed in CA · MFT85039
Definition
A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups.
5275 CLAREMONT AVE, Oakland, CA 94618
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Secondary Practice Location 1

Location 1770 53rd StOakland, CA 94609-1814 · Phone (510) 428-3885

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Matthew Garrett Ong Mft is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4284190083
PECOS Enrollment IDI20260731002932
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

4

Medicare enrollment records show Matthew Ong reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Regents Of The University Of California
10 mi
Endocrinology, Diabetes & Metabolism
1600 DIVISADERO ST
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 2,112 clinicians in this Medicare group
NPI 1235322348 (415) 353-9720
University Of California San Francisco
12 mi
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1346329380 (415) 353-2161
Ucsf Medical Group Business Services
12 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808
Ucsf Pediatrics Associates
12 mi
Pediatrics
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 1,159 clinicians in this Medicare group
NPI 1376614016 (415) 353-2000

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.

CHIZITE CHIMA IGWE
Counselor
5275 CLAREMONT AVE
OAKLAND, CA 94618
Alameda County (510) 428-3885
MATTHEW MENDEZ
Licensed Psychiatric Technician
5275 CLAREMONT AVE
OAKLAND, CA 94618
Alameda County (510) 428-3000
CHILDREN'S HOSPITAL AND RESEARCH CENTER-OAKLAND
General Acute Care Hospital (Children)
5275 CLAREMONT AVE, CENTER FOR THE VULNERABLE CHILD
OAKLAND, CA 94618
Alameda County (510) 428-3885
DIANA MANDUJANO LMFT
Marriage & Family Therapist
5275 CLAREMONT AVE
OAKLAND, CA 94618
Alameda County (510) 428-3000
MS. RACHEL LEIGH WILSON M.S.W.
Social Worker (Clinical)
5275 CLAREMONT AVE
OAKLAND, CA 94618
Alameda County (510) 428-3885
DR. DAVID HOSKINS PSY.D, M.A.S.
Psychologist
5275 CLAREMONT AVE
OAKLAND, CA 94618
Alameda County (510) 428-3160
LOURDES MARIE GARCIA
Social Worker (Clinical)
5275 CLAREMONT AVE
OAKLAND, CA 94618
Alameda County (510) 428-3000
JILL MILLER PSY.D
Psychologist (Clinical Child & Adolescent)
5275 CLAREMONT AVE, CENTER FOR THE VULNERABLE CHILD
OAKLAND, CA 94618
Alameda County (510) 428-3885

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 Ong's NPI number?

The NPI number for Matthew Ong is 1972736379. It was assigned to this individual provider in the NPPES registry on September 1, 2009.

Where is Matthew Ong located?

Matthew Ong practices at 5275 Claremont Ave, Oakland, CA 94618. The listed phone number is (510) 428-3885.

What is Matthew Ong's specialty?

The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.

Is Matthew Ong enrolled in Medicare?

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

Which organizations bill Medicare for Matthew Ong's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Ong reassigns Medicare benefits to 4 organizations: Regents Of The University Of California (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and Ucsf Pediatrics Associates (San Francisco, 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 Ong'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 Ong was last updated on July 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.