DR. JOHN AKHTAR STRAZNICKAS M.D.
NPI 1548291164
Psychiatry & Neurology - Addiction Psychiatry in San Francisco, CA

NPI Status: Active since July 05, 2006

Contact Information

4150 CLEMENT ST # 116E
SAN FRANCISCO, CA
ZIP 94121
Phone: (415) 221-4810
Fax: (415) 750-6615

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  • Individual
  • Male
  • Psychiatry & Neurology
  • Addiction Psychiatry

About JOHN STRAZNICKAS

This page provides the complete NPI Profile along with additional information for John Straznickas, a provider established in San Francisco, California with a medical specialization in Psychiatry & Neurology, focusing in addiction psychiatry . The healthcare provider is registered in the NPI registry with number 1548291164 assigned on July 2006. The practitioner's primary taxonomy code is 2084P0802X with license number G067608 (CA). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1548291164
Provider Name
DR. JOHN AKHTAR STRAZNICKAS M.D.
Gender
Male
Entity Type
Individual
Location Address
4150 CLEMENT ST # 116E SAN FRANCISCO, CA 94121
Location Phone
(415) 221-4810
Location Fax
(415) 750-6615
Mailing Address
4150 CLEMENT ST # 116E SAN FRANCISCO, CA 94121
Mailing Phone
(415) 221-4810
Mailing Fax
(415) 750-6615
Is Sole Proprietor?
No
Enumeration Date
07-05-2006
Last Update Date
07-08-2007
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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.
G067608
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.

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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 1548291164, we treat the final digit (4) 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).

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

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 8 + 8 + 4 + 9 + 2 + 1 + 1 + 2 + 24 = 66

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

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1548291164.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Social Worker (Clinical)
4150 CLEMENT ST # 116E
SAN FRANCISCO, CA 94121
Social Worker (Clinical)
4150 CLEMENT ST # 116E
SAN FRANCISCO, CA 94121

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1548291164, enumerated as an "individual" on July 05, 2006.

The provider is located at 4150 CLEMENT ST # 116E SAN FRANCISCO, CA 94121 and the phone number is (415) 221-4810.

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