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ISABELLE NGUYEN MD
NPI 1154920833
Internal Medicine in San Francisco, CA

Active since October 22, 2020PECOS Enrolled
900 HYDE ST, SAN FRANCISCO, CA 94109(415) 353-6368(415) 353-6360 Get Directions Write a Review

NPPES record last updated: June 4, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Jun 4, 2026, May 5, 2022, Oct 22, 2020 (3 updates tracked since 2020).

About Isabelle Nguyen Md NPPES

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

ISABELLE NGUYEN MD (NPI 1154920833) is an individual internal medicine provider in San Francisco, California, licensed in California (A188101) and active in the NPI registry since October 2020. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1154920833
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameISABELLE NGUYENCredential: MD
Location Address900 HYDE STSan Francisco, CA 94109-4806
Mailing Address900 Hyde StSan Francisco, CA 94109-4806 · (415) 353-6368 · Fax (415) 353-6360
Phone(415) 353-6368
Fax(415) 353-6360
Sole ProprietorNo
Enumeration DateOctober 22, 2020
Last NPPES UpdateJune 4, 20263 updates tracked since enumeration
NPPES CertifiedJune 4, 2026
✔ NPI 1154920833 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 · A188101
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.
900 HYDE ST, San Francisco, CA 94109
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Isabelle Nguyen Md 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94109 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 20

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

ANJA OEFLER RPH
Pharmacist
900 HYDE ST
SAN FRANCISCO, CA 94109
San Francisco County (415) 353-6450
MARYANN SKIDMORE M.D.
Emergency Medicine
900 HYDE ST
SAN FRANCISCO, CA 94109
San Francisco County (415) 353-6000
CEP AMERICA - PSYCHIATRY PC
Psychiatry & Neurology (Psychiatry)
900 HYDE ST
SAN FRANCISCO, CA 94109
San Francisco County (415) 353-6000
GOLDEN GATE INPATIENT SERVICES
Internal Medicine
900 HYDE ST
SAN FRANCISCO, CA 94109
San Francisco County (415) 353-6000
PATRICK BRIAN NOONE M.D.
Emergency Medicine
900 HYDE ST
SAN FRANCISCO, CA 94109
San Francisco County (415) 353-6000
PRANEETH SRIVATSA JANASWAMY MD
Hospitalist
900 HYDE ST
SAN FRANCISCO, CA 94109
San Francisco County (415) 353-6000
DR. ANAMIKA GUPTA MD
Internal Medicine
900 HYDE ST
SAN FRANCISCO, CA 94109
San Francisco County (415) 353-6000
ANESTHESIOLOGISTS' MEDICAL GROUP OF SAN FRANCISCO, INC.
Anesthesiology
900 HYDE ST
SAN FRANCISCO, CA 94109
San Francisco County (415) 353-6000

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 Isabelle Nguyen's NPI number?

The NPI number for Isabelle Nguyen is 1154920833. It was assigned to this individual provider in the NPPES registry on October 22, 2020.

Where is Isabelle Nguyen located?

Isabelle Nguyen practices at 900 Hyde St, San Francisco, CA 94109. The listed phone number is (415) 353-6368.

What is Isabelle Nguyen's specialty?

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

Is Isabelle Nguyen enrolled in Medicare?

Yes. Isabelle Nguyen is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Isabelle Nguyen was last updated on June 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.