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

NPI Status: Active since April 12, 2006

Contact Information

1300 CRANE STREET
MENLO PARK, CA
ZIP 94025
Phone: (650) 498-6500

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  • Individual
  • Female
  • Internal Medicine
  • Gastroenterology

About MARY CHAN

This page provides the complete NPI Profile along with additional information for Mary Chan, an internist established in Menlo Park, California with a medical specialization in Internal Medicine, focusing in gastroenterology . The healthcare provider is registered in the NPI registry with number 1790749430 assigned on April 2006. The practitioner's primary taxonomy code is 207RG0100X with license number G66642 (CA). The provider is registered as an individual and her NPI record was last updated 19 years ago.

NPI
1790749430
Provider Name
MARY F CHAN MD
Gender
Female
Entity Type
Individual
Location Address
1300 CRANE STREET MENLO PARK, CA 94025
Location Phone
(650) 498-6500
Mailing Address
PO BOX 60000 FILE #72484 SAN FRANCISCO, CA 94160
Is Sole Proprietor?
Yes
Enumeration Date
04-12-2006
Last Update Date
07-08-2007
Code Navigator

An internist like Mary Chan is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine Gastroenterology

Taxonomy Code
207RG0100X
Type
Allopathic & Osteopathic Physicians
License No.
G66642
License State
CA
Taxonomy Description
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.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
MMM00087MOTHER (01)NHIC
OOG666420MEDICARE ID-TYPE UNSPECIFIED (04) 
F02193MEDICARE UPIN (02) 

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1790749430, we treat the final digit (0) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
7
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
0
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
4
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
4
Unchanged
Pos 9
3
Doubled → 6
Check
0
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 9 → 18 → 9 7 → 14 → 5 9 → 18 → 9 3 → 6

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 7 + 1 + 8 + 0 + 1 + 4 + 4 + 1 + 8 + 4 + 6 + 24 = 70

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 70 is 70. The difference is the calculated check digit.

70 - 70 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1790749430.

Other Providers at the Same Location


The following 16 providers are registered at the same or a nearby location.

Allergy & Immunology
1300 CRANE STREET
MENLO PARK, CA 94025
Otolaryngology
1300 CRANE STREET
MENCO PARK, CA 94025
Internal Medicine
1300 CRANE STREET
MENLO PARK, CA 94025
Surgery
1300 CRANE STREET
MENLO PARK, CA 94025
Radiology (Diagnostic Radiology)
1300 CRANE STREET
MENLO PARK, CA 94025
Ophthalmology
1300 CRANE STREET
MENLO PARK, CA 94025
Internal Medicine (Cardiovascular Disease)
1300 CRANE STREET
MENLO PARK, CA 94025
Radiology (Diagnostic Radiology)
1300 CRANE STREET
MENLO PARK, CA 94025
Pediatrics
1300 CRANE STREET
MENLO PARK, CA 94025
Pediatrics
1300 CRANE STREET
MENLO PARK, CA 94025
Pediatrics
1300 CRANE STREET
MENLO PARK, CA 94025
Dietitian, Registered
1300 CRANE STREET
MENLO PARK, CA 94025
Nurse Practitioner (Obstetrics & Gynecology)
1300 CRANE STREET
MENLO PARK, CA 94025
Internal Medicine
1300 CRANE STREET
MENLO PARK, CA 94025
Surgery
1300 CRANE STREET
MENLO PARK, CA 94025
Internal Medicine
1300 CRANE STREET
MENLO PARK, CA 94025

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1790749430, enumerated as an "individual" on April 12, 2006.

The provider is located at 1300 CRANE STREET MENLO PARK, CA 94025 and the phone number is (650) 498-6500.

Internal Medicine with taxonomy code 207RG0100X and a focus in Gastroenterology.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.