DR. WILLIAM R SCHINDLER D.O.
NPI 1831201995
Internal Medicine - Gastroenterology in San Diego, CA

NPI Status: Active since August 31, 2006

Contact Information

2929 HEALTH CENTER DR
SAN DIEGO, CA
ZIP 92123
Phone: (858) 939-6531
Fax: (619) 662-5412

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  • Individual
  • Male
  • Internal Medicine
  • Gastroenterology

About WILLIAM SCHINDLER

This page provides the complete NPI Profile along with additional information for William Schindler, an internist established in San Diego, California with a medical specialization in Internal Medicine, focusing in gastroenterology . The healthcare provider is registered in the NPI registry with number 1831201995 assigned on August 2006. The practitioner's primary taxonomy code is 207RG0100X with license number 20A5846 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1831201995
Provider Name
DR. WILLIAM R SCHINDLER D.O.
Gender
Male
Entity Type
Individual
Location Address
2929 HEALTH CENTER DR SAN DIEGO, CA 92123
Location Phone
(858) 939-6531
Location Fax
(619) 662-5412
Mailing Address
4650 PALM AVE GASTROENTEROLOGY SAN DIEGO, CA 92154
Mailing Phone
(619) 472-2299
Is Sole Proprietor?
No
Enumeration Date
08-31-2006
Last Update Date
09-11-2025
Code Navigator

An internist like William Schindler 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.
20A5846
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.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1207R00000XAllopathic & Osteopathic Physicians

Internal Medicine

20A5846 (CA)

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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 1831201995, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 6 + 1 + 4 + 0 + 2 + 9 + 1 + 8 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1831201995.

Other Providers at the Same Location


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

Pediatrics
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Physician Assistant
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Pediatrics
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Internal Medicine
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Pediatrics
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Internal Medicine (Hematology)
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Pediatrics
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Nurse Practitioner
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Anesthesiology
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Physician Assistant
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Hospitalist
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Physician Assistant
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Pediatrics
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Anesthesiology
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Audiologist-Hearing Aid Fitter
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Audiologist
2929 HEALTH CENTER DR, 3RD FLOOR, AUDIOLOGY
SAN DIEGO, CA 92123
Audiologist
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Nurse Practitioner
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Pharmacist
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123
Nurse Practitioner (Adult Health)
2929 HEALTH CENTER DR
SAN DIEGO, CA 92123

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1831201995, enumerated as an "individual" on August 31, 2006.

The provider is located at 2929 HEALTH CENTER DR SAN DIEGO, CA 92123 and the phone number is (858) 939-6531.

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