MUHAMMAD S QUIDWAI MD
NPI 1679750988
Psychiatry & Neurology - Addiction Psychiatry in Represa, CA

NPI Status: Active since January 29, 2008

Contact Information

100 PRISON RD
REPRESA, CA
ZIP 95671
Phone: (916) 985-8610

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  • Individual
  • Male
  • Psychiatry & Neurology
  • Addiction Psychiatry

About MUHAMMAD QUIDWAI

This page provides the complete NPI Profile along with additional information for Muhammad Quidwai, a provider established in Represa, California with a medical specialization in Psychiatry & Neurology, focusing in addiction psychiatry . The healthcare provider is registered in the NPI registry with number 1679750988 assigned on January 2008. The practitioner's primary taxonomy code is 2084P0802X with license number C155324 (CA). The provider is registered as an individual and his NPI record was last updated June 2026.

NPI
1679750988
Provider Name
MUHAMMAD S QUIDWAI MD
Gender
Male
Entity Type
Individual
Location Address
100 PRISON RD REPRESA, CA 95671
Location Phone
(916) 985-8610
Mailing Address
100 PRISON RD REPRESA, CA 95671
Mailing Phone
(916) 985-8610
Is Sole Proprietor?
No
Enumeration Date
01-29-2008
Last Update Date
06-17-2026
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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

Psychiatry & Neurology Addiction Psychiatry

Taxonomy Code
2084P0802X
Type
Allopathic & Osteopathic Physicians
License No.
C155324
License State
CA
Taxonomy Description
Addiction Psychiatry is a subspecialty of psychiatry that focuses on evaluation and treatment of individuals with alcohol, drug, or other substance-related disorders, and of individuals with dual diagnosis of substance-related and other psychiatric disorders.

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.

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.

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
0803729MOTHER (01)VAOPTIMA/SENATARA
600521688OTHER (01)VAMAGELLAN HEALTH
346536OTHER (01)VAANTHEM TRIGON
415381OTHER (01)VAFEDERAL HEALTH NET/TRICARE

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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 1679750988, we treat the final digit (8) 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 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 8).

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
6
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
9
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
5
Unchanged
Pos 7
0
Doubled → 0
Pos 8
9
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
8
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 7 → 14 → 5 7 → 14 → 5 0 → 0 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 4 + 9 + 1 + 4 + 5 + 0 + 9 + 1 + 6 + 24 = 72

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

The next multiple of ten after 72 is 80. The difference is the calculated check digit.

80 - 72 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1679750988.

Other Providers at the Same Location


The following 19 providers are registered at the same or a nearby location.

Psychologist (Clinical)
100 PRISON RD
REPRESA, CA 95671
Psychologist (Clinical)
100 PRISON RD
REPRESA, CA 95671
Psychologist (Clinical)
100 PRISON RD
REPRESA, CA 95671
Psychologist (Clinical)
100 PRISON RD
REPRESA, CA 95671
Psychologist
100 PRISON RD
REPRESA, CA 95671
Psychologist
100 PRISON RD
REPRESA, CA 95671
Psychologist (Clinical)
100 PRISON RD
REPRESA, CA 95671
Psychiatry & Neurology (Psychiatry)
100 PRISON RD
REPRESA, CA 95671
Psychiatry & Neurology (Psychiatry)
100 PRISON RD
REPRESA, CA 95671
Psychiatry & Neurology (Psychiatry)
100 PRISON RD
REPRESA, CA 95671
Psychologist
100 PRISON RD
REPRESA, CA 95671
Psychologist (Clinical)
100 PRISON RD
REPRESA, CA 95671
Psychologist (Clinical)
100 PRISON RD
REPRESA, CA 95671
Psychiatry & Neurology (Psychiatry)
100 PRISON RD
REPRESA, CA 95671
Dentist
100 PRISON RD
REPRESA, CA 95671
Psychologist (Clinical)
100 PRISON RD
REPRESA, CA 95671
Psychologist (Clinical)
100 PRISON RD
REPRESA, CA 95671
Social Worker (Clinical)
100 PRISON RD
REPRESA, CA 95671
Psychologist (Forensic)
100 PRISON RD
REPRESA, CA 95671

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1679750988, enumerated as an "individual" on January 29, 2008.

The provider is located at 100 PRISON RD REPRESA, CA 95671 and the phone number is (916) 985-8610.

Psychiatry & Neurology with taxonomy code 2084P0802X and a focus in Addiction Psychiatry.

The provider might be accepting Accepts: Medicare, Medicaid, Magellan Health, Anthem Blue. Please consult your insurance carrier or call the provider to verify.