Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MARY F CHAN MD
NPI 1790749430
Internal Medicine - Gastroenterology in Menlo Park, CA

Active since April 12, 2006
1300 CRANE STREET, MENLO PARK, CA 94025(650) 498-6500 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Mary F Chan Md NPPES

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

MARY F CHAN MD (NPI 1790749430) is an individual gastroenterology provider in Menlo Park, California, licensed in California (G66642) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1790749430
Entity TypeIndividualFemale
Primary Taxonomy207RG0100X
Provider Legal NameMARY F CHANCredential: MD
Location Address1300 CRANE STREETMenlo Park, CA 94025-4429
Mailing AddressPo Box 60000, File #72484San Francisco, CA 94160-0001
Sole ProprietorNo
Enumeration DateApril 12, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1790749430 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License Licensed in CA · G66642
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
1300 CRANE STREET, Menlo Park, CA 94025

Other Identifiers 1

OtherMMM00087MNhic

Other Providers at the Same Location NPPES 16

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

Radiology (Diagnostic Radiology)
1300 CRANE STREET
MENLO PARK, CA 94025
Otolaryngology
1300 CRANE STREET
MENCO PARK, CA 94025
Radiology (Diagnostic Radiology)
1300 CRANE STREET
MENLO PARK, CA 94025
Surgery
1300 CRANE STREET
MENLO PARK, CA 94025
Internal Medicine
1300 CRANE STREET
MENLO PARK, CA 94025
Dietitian, Registered
1300 CRANE STREET
MENLO PARK, CA 94025
Pediatrics
1300 CRANE STREET
MENLO PARK, CA 94025
Pediatrics
1300 CRANE STREET
MENLO PARK, CA 94025

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 Mary Chan's NPI number?

The NPI number for Mary Chan is 1790749430. It was assigned to this individual provider in the NPPES registry on April 12, 2006.

Where is Mary Chan located?

Mary Chan practices at 1300 Crane Street, Menlo Park, CA 94025. The listed phone number is (650) 498-6500.

What is Mary Chan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for Mary Chan was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.