AMY TSAI MD
NPI 1063161172
Surgery in Stanford, CA

NPI Status: Active since March 23, 2022

Contact Information

300 PASTEUR DRIVE
DEPARTMENT OF ANESTHESIOLOGY
STANFORD, CA
ZIP 94305
Phone: (650) 723-5948

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  • Individual
  • Female
  • Surgery

About AMY TSAI

This page provides the complete NPI Profile along with additional information for Amy Tsai, a provider established in Stanford, California with a medical specialization in Surgery. The healthcare provider is registered in the NPI registry with number 1063161172 assigned on March 2022. The practitioner's primary taxonomy code is 208600000X with license number A189137 (CA). The provider is registered as an individual and her NPI record was last updated April 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization.

NPI
1063161172
Provider Name
AMY TSAI MD
Gender
Female
Entity Type
Individual
Location Address
300 PASTEUR DRIVE DEPARTMENT OF ANESTHESIOLOGY STANFORD, CA 94305
Location Phone
(650) 723-5948
Mailing Address
300 PASTEUR DRIVE DEPARTMENT OF ANESTHESIOLOGY STANFORD, CA 94305
Is Sole Proprietor?
Yes
Enumeration Date
03-23-2022
Last Update Date
04-26-2026
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A surgeon like Amy Tsai treats injuries, diseases, and deformities through surgical operations. A surgeon could correct physical deformities, repair bone and tissue, or perform preventive or elective surgeries. Surgeons also examine patients, perform and interpret diagnostic tests, and provide counsel on preventive healthcare.

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

Surgery

Taxonomy Code
208600000X
Type
Allopathic & Osteopathic Physicians
License No.
A189137
License State
CA
Taxonomy Description
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

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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 1063161172, we treat the final digit (2) 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 48. The final step is to find the difference between that total and the next multiple of ten (50 - 48 = 2).

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
0
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
3
Unchanged
Pos 5
1
Doubled → 2
Pos 6
6
Unchanged
Pos 7
1
Doubled → 2
Pos 8
1
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
2
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 6 → 12 → 3 1 → 2 1 → 2 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 1 + 2 + 3 + 2 + 6 + 2 + 1 + 1 + 4 + 24 = 48

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

The next multiple of ten after 48 is 50. The difference is the calculated check digit.

50 - 48 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1063161172.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Internal Medicine
300 PASTEUR DRIVE
STANFORD, CA 94305
Surgery
300 PASTEUR DRIVE, H3680
STANFORD, CA 94305
Internal Medicine
300 PASTEUR DRIVE, H2152 CARDIOLOGY
STANFORD, CA 94305
Anesthesiology (Pain Medicine)
300 PASTEUR DRIVE, STANFORD UNIVERSITY DEPT OF ANESTHESIA
STANFORD, CA 94305
Internal Medicine (Cardiovascular Disease)
300 PASTEUR DRIVE, FALK CVRC 295
STANFORD, CA 94305
Anesthesiology
300 PASTEUR DRIVE, H3580 MC 5640
STANFORD, CA 94305
Internal Medicine (Cardiovascular Disease)
300 PASTEUR DRIVE, FALK CVRC
STANFORD, CA 94305
Pediatrics (Pediatric Rheumatology)
300 PASTEUR DRIVE, BOSWELL BUILDING, ROOM A085
STANFORD, CA 94305
Clinical Pharmacology
300 PASTEUR DRIVE
STANFORD, CA 94305
Occupational Therapist
300 PASTEUR DRIVE, STANFORD UNIVERSITY MEDICAL CENTER
STANFORD, CA 94305
Internal Medicine
300 PASTEUR DRIVE, S101
STANFORD, CA 94305
Speech-Language Pathologist
300 PASTEUR DRIVE
STANFORD, CA 94305
Physical Therapist
300 PASTEUR DRIVE
STANFORD, CA 94305
Speech-Language Pathologist
300 PASTEUR DRIVE, REHABILITATION DEPT H3124
PALO ALTO, CA 94305
Occupational Therapist
300 PASTEUR DRIVE
PALO ALTO, CA 94305
Orthopaedic Surgery
300 PASTEUR DRIVE, STANFORD ORTHOPAEDIC SURGERY RM R144
STANFORD, CA 94305
Obstetrics & Gynecology
300 PASTEUR DRIVE, RM HH333
STANFORD, CA 94305
Nuclear Medicine
300 PASTEUR DRIVE, DEP. OF NUCLEAR MEDICINE, STANFORD UNIVERSITY HOSPITAL
PALO ALTO, CA 94305
Nurse Practitioner (Adult Health)
300 PASTEUR DRIVE, A160 MC 5313 STANFORD HOSPITAL & CLINICS
STANFORD, CA 94305
Nurse Practitioner (Acute Care)
300 PASTEUR DRIVE, ROOM H2102
STANFORD, CA 94305

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1063161172, enumerated as an "individual" on March 23, 2022.

The provider is located at 300 PASTEUR DRIVE DEPARTMENT OF ANESTHESIOLOGY STANFORD, CA 94305 and the phone number is (650) 723-5948.

Surgery with taxonomy code 208600000X.