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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GRACE FONG D.O.
NPI 1952559585
Family Medicine in Larkspur, CA

Active since September 08, 2008PECOS Enrolled
1100 LARKSPUR LANDING CIR STE 10, LARKSPUR, CA 94939(415) 924-1214(415) 924-1375 Get Directions Write a Review

NPPES record last updated: October 15, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 15, 2026, Jul 7, 2025, Feb 11, 2022 and 1 more (4 updates tracked since 2019).

About Grace Fong D.o. NPPES

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

GRACE FONG D.O. (NPI 1952559585) is an individual family medicine provider in Larkspur, California, licensed in California (20A9698) and active in the NPI registry since September 2008. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Other (2005).

NPPES Registry Identity

NPI1952559585
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameGRACE FONGCredential: D.O.
Location Address1100 LARKSPUR LANDING CIR STE 10Larkspur, CA 94939-1836
Mailing Address1100 Larkspur Landing Cir Ste 10Larkspur, CA 94939-1836 · (415) 924-1214 · Fax (415) 924-1375
Phone(415) 924-1214
Fax(415) 924-1375
Sole ProprietorNo
Medical School CMSOtherGraduated 2005
Enumeration DateSeptember 8, 2008
Last NPPES UpdateOctober 15, 20264 updates tracked since enumeration
NPPES CertifiedOctober 15, 2026
✔ NPI 1952559585 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · 20A9698
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1100 LARKSPUR LANDING CIR STE 10, Larkspur, CA 94939
Open in Google Maps ↗

Secondary Practice Locations 3

Location 11383 N McDowell Blvd Ste 150Petaluma, CA 94954-7118 · Phone (707) 308-2840 · Fax (707) 573-5376
Location 22750 E Slauson AveHuntington Park, CA 90255-3063 · Phone (323) 583-3010
Location 3550 W Ranch View Dr, Ste. 3000Rocklin, CA 95765-5391 · Phone (916) 409-1400 · Fax (916) 409-1499

Other Identifiers 1

Other20A9698CA · State Medical License

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Grace Fong D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7810059573
PECOS Enrollment IDI20081215000631
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 Grace Fong reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Regents Univ Of California Ucsf
13 mi
Internal Medicine
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 339 clinicians in this Medicare group
NPI 1124439807 (415) 476-1000
Sutter Bay Medical Foundation
19 mi
Multi-Specialty
12 CAMINO ENCINAS
Orinda, CA 94563
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
NPI 1366898538 (510) 204-8180
Chapa-De Indian Health Program, Inc.
102 mi
Federally Qualified Health Center (FQHC)
11670 ATWOOD RD
Auburn, CA 95603
  • Reassigned Medicare billing, California enrollment
  • 87 clinicians in this Medicare group
NPI 1114057163 (530) 887-2800

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 6

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
125 services115 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
91 services77 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
21 services21 patients
Automated urinalysis test 81003
An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.
14 services14 patients
Influenza vaccine, inactivated 90653
The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.
12 services12 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94939 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
$104.67 typical visit price
range $69.07 – $202.63
Typical copayment $26.16 (range $17.26 – $50.65)
Most-billed visit code 99203
Established Patient
$119.61 typical visit price
range $23.44 – $166.64
Typical copayment $29.90 (range $5.86 – $41.66)
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 12

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

INJIL ABUBAKAR MD
Family Medicine
1100 LARKSPUR LANDING CIR STE 10
LARKSPUR, CA 94939
Marin County (415) 924-1214
MERRILL RALPH NISAM MD
Internal Medicine (Pulmonary Disease)
1100 LARKSPUR LANDING CIR STE 10
LARKSPUR, CA 94939
Marin County (415) 924-1214
WILLIE TANG MD
Internal Medicine
1100 LARKSPUR LANDING CIR STE 10
LARKSPUR, CA 94939
Marin County (415) 924-1214
MICHELLE LOW DO
Internal Medicine (Pulmonary Disease)
1100 LARKSPUR LANDING CIR STE 10
LARKSPUR, CA 94939
Marin County (415) 924-1214
DR. JOHN MICHAEL GRAHAM M.D.
Family Medicine
1100 LARKSPUR LANDING CIR STE 10
LARKSPUR, CA 94939
Marin County (415) 924-1214
LIA ARMSTRONG WYSTRACH BSN, RN, MN, FNP-C
Nurse Practitioner (Family)
1100 LARKSPUR LANDING CIR STE 10
LARKSPUR, CA 94939
Marin County (415) 924-1214
ANJULI MAYA BRIGHTON MD
Internal Medicine (Pulmonary Disease)
1100 LARKSPUR LANDING CIR STE 10
LARKSPUR, CA 94939
Marin County (415) 924-1214
ROBERT DORIS
Internal Medicine
1100 LARKSPUR LANDING CIR STE 10
LARKSPUR, CA 94939
Marin County (415) 924-1214

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 Grace Fong's NPI number?

The NPI number for Grace Fong is 1952559585. It was assigned to this individual provider in the NPPES registry on September 8, 2008.

Where is Grace Fong located?

Grace Fong practices at 1100 Larkspur Landing Cir Ste 10, Larkspur, CA 94939. The listed phone number is (415) 924-1214.

What is Grace Fong's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Grace Fong enrolled in Medicare?

Yes. Grace Fong is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Grace Fong's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Grace Fong reassigns Medicare benefits to 3 organizations: Regents Univ Of California Ucsf (San Francisco, CA), Sutter Bay Medical Foundation (Orinda, CA) and Chapa-De Indian Health Program, Inc. (Auburn, 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 Grace Fong'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 Grace Fong was last updated on October 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 days 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.