DR. STEPHEN P WEINSTEIN PHD
NPI 1992720429
Psychologist - Addiction (Substance Use Disorder) in Phila, PA

NPI Status: Active since July 13, 2006

Contact Information

833 CHESTNUT ST
SUITE210
PHILA, PA
ZIP 19107
Phone: (215) 955-7910
Fax: (215) 503-2850

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  • Individual
  • Male
  • Psychologist
  • Addiction (Substance Use Disorder)

About STEPHEN WEINSTEIN

This page provides the complete NPI Profile along with additional information for Stephen Weinstein, a provider established in Phila, Pennsylvania with a medical specialization in Psychologist, focusing in addiction (substance use disorder) . The healthcare provider is registered in the NPI registry with number 1992720429 assigned on July 2006. The practitioner's primary taxonomy code is 103TA0400X with license number PS001271L (PA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1992720429
Provider Name
DR. STEPHEN P WEINSTEIN PHD
Gender
Male
Entity Type
Individual
Location Address
833 CHESTNUT ST SUITE210 PHILA, PA 19107
Location Phone
(215) 955-7910
Location Fax
(215) 503-2850
Mailing Address
833 CHESTNUT ST SUITE 210 PHILA, PA 19107
Mailing Phone
(215) 955-7910
Mailing Fax
(215) 503-2850
Is Sole Proprietor?
No
Enumeration Date
07-13-2006
Last Update Date
09-11-2025
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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

Psychologist Addiction (Substance Use Disorder)

Taxonomy Code
103TA0400X
Type
Behavioral Health & Social Service Providers
License No.
PS001271L
License State
PA
Taxonomy Description
A psychologist with a proficiency that involves the application of psychological treatment of addiction stemming from the use of alcohol and other psychoactive substances (e.g., nicotine, marijuana, cocaine, heroin) or behavioral addictions (e.g., gambling) with the aim of cessation or reduction of use and/or the amelioration of emotional, behavioral, interpersonal and other problems arising from the addictive behavior.

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)
1103TC0700XBehavioral Health & Social Service Providers

Psychologist
Clinical

PS001271L (PA)

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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 1992720429, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 8 + 2 + 1 + 4 + 2 + 0 + 4 + 4 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1992720429.

Other Providers at the Same Location


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

Genetic Counselor, MS
833 CHESTNUT ST, SUITE 1200
PHILADELPHIA, PA 19107
Psychiatry & Neurology (Psychiatry)
833 CHESTNUT ST
PHILADELPHIA, PA 19107
Family Medicine
833 CHESTNUT ST, SUITE 301
PHILADELPHIA, PA 19107
Family Medicine
833 CHESTNUT ST, SUITE 301
PHILADELPHIA, PA 19107
Family Medicine
833 CHESTNUT ST, 14TH FLOOR
PHILADELPHIA, PA 19107
Internal Medicine
833 CHESTNUT ST, SUITE 701
PHILADELPHIA, PA 19107
Internal Medicine
833 CHESTNUT ST, SUITE 701
PHILADELPHIA, PA 19107
Psychiatry & Neurology (Psychiatry)
833 CHESTNUT ST, SUITE 210
PHILA, PA 19107
Genetic Counselor, MS
833 CHESTNUT ST, SUITE 1250
PHILADELPHIA, PA 19107
Urology
833 CHESTNUT ST, SUITE 703
PHILADELPHIA, PA 19107
Family Medicine
833 CHESTNUT ST, SUITE 301
PHILADELPHIA, PA 19107
Internal Medicine
833 CHESTNUT ST, SUITE 701
PHILADELPHIA, PA 19107
Internal Medicine
833 CHESTNUT ST, SUITE 220
PHILADELPHIA, PA 19107
Family Medicine
833 CHESTNUT ST, SUITE 301
PHILADELPHIA, PA 19107
Family Medicine
833 CHESTNUT ST, SUITE 301
PHILA, PA 19107
Internal Medicine
833 CHESTNUT ST, SUITE 220
PHILADELPHIA, PA 19107
Internal Medicine
833 CHESTNUT ST, SUITE 701
PHILADELPHIA, PA 19107
Family Medicine
833 CHESTNUT ST
PHILADELPHIA, PA 19107
Internal Medicine
833 CHESTNUT ST, SUITE 701
PHILADELPHIA, PA 19107
Internal Medicine
833 CHESTNUT ST, SUITE 701
PHILADELPHIA, PA 19107

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1992720429, enumerated as an "individual" on July 13, 2006.

The provider is located at 833 CHESTNUT ST SUITE210 PHILA, PA 19107 and the phone number is (215) 955-7910.

Psychologist with taxonomy code 103TA0400X and a focus in Addiction (Substance Use Disorder).