MR. DOUGLAS DAMIEN SHAFFER CAC-AD
NPI 1306513882
Counselor - Addiction (Substance Use Disorder) in Baltimore, MD

NPI Status: Active since August 24, 2021

Contact Information

821 N EUTAW ST
BALTIMORE, MD
ZIP 21201
Phone: (410) 225-5452
Fax: (410) 225-7964

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

About DOUGLAS SHAFFER

This page provides the complete NPI Profile along with additional information for Douglas Shaffer, a provider established in Baltimore, Maryland with a medical specialization in Counselor, focusing in addiction (substance use disorder) . The healthcare provider is registered in the NPI registry with number 1306513882 assigned on August 2021. The practitioner's primary taxonomy code is 101YA0400X. The provider is registered as an individual and his NPI record was last updated 3 years ago.

NPI
1306513882
Provider Name
MR. DOUGLAS DAMIEN SHAFFER CAC-AD
Gender
Male
Entity Type
Individual
Location Address
821 N EUTAW ST BALTIMORE, MD 21201
Location Phone
(410) 225-5452
Location Fax
(410) 225-7964
Mailing Address
821 N EUTAW ST BALTIMORE, MD 21201
Mailing Phone
(410) 225-5452
Mailing Fax
(410) 225-7964
Is Sole Proprietor?
No
Enumeration Date
08-24-2021
Last Update Date
04-10-2023
Code Navigator

A Substance Abuse or Addiction Counselor like Douglas Shaffer advices patients who experience alcoholism, drug addiction, eating disorders, mental health issues, or other mental or behavioral problems. Substance Abuse counselors provide treatment and support to help clients recover from addiction or modify problem behaviors. Many counselors incorporate the principles of 12-step programs, such as Alcoholics Anonymous (AA). They educate clients how to cope with stress and life’s issues in ways that help them recover. Counselors also help patients improve their personal relationships and find ways to discuss their addiction or other problems with family and friends.

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

Counselor Addiction (Substance Use Disorder)

Taxonomy Code
101YA0400X
Type
Behavioral Health & Social Service Providers

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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 1306513882, 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 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
3
Unchanged
Pos 3
0
Doubled → 0
Pos 4
6
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
1
Unchanged
Pos 7
3
Doubled → 6
Pos 8
8
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
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 0 → 0 5 → 10 → 1 3 → 6 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 0 + 6 + 1 + 0 + 1 + 6 + 8 + 1 + 6 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1306513882.

Other Providers at the Same Location


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

Specialist
821 N EUTAW ST, SUITE 307
BALTIMORE, MD 21201
Specialist
821 N EUTAW ST, SUITE 305
BALTIMORE, MD 21201
Specialist
821 N EUTAW ST, 103
BALTIMORE, MD 21201
Internal Medicine
821 N EUTAW ST, S-103
BALTIMORE, MD 21201
Specialist
821 N EUTAW ST
BALTIMORE, MD 21201
Internal Medicine
821 N EUTAW ST, #308
BALTIMORE, MD 21201
Obstetrics & Gynecology (Gynecology)
821 N EUTAW ST, STE 308
BALTIMORE, MD 21201
Pediatrics
821 N EUTAW ST, 210
BALTIMORE, MD 21201
Internal Medicine (Rheumatology)
821 N EUTAW ST, 312
BALTIMORE, MD 21201
Internal Medicine
821 N EUTAW ST, 312
BALTIMORE, MD 21201
Nurse Practitioner (Family)
821 N EUTAW ST, SUITE 405
BALTIMORE, MD 21201
Psychiatry & Neurology (Psychiatry)
821 N EUTAW ST, 105
BALTIMORE, MD 21201
Specialist
821 N EUTAW ST, ST 305
BALTIMORE, MD 21201
Internal Medicine
821 N EUTAW ST, STE 312
BALTIMORE, MD 21201
Internal Medicine
821 N EUTAW ST, SUITE 206
BALTIMORE, MD 21201
Technician/Technologist (Optician)
821 N EUTAW ST, SUITE 303
BALTIMORE, MD 21201
Eyewear Supplier
821 N EUTAW ST, SUITE 303
BALTIMORE, MD 21201
Specialist
821 N EUTAW ST, SUITE 308
BALTIMORE, MD 21201
Physician Assistant (Medical)
821 N EUTAW ST, SUITE 103
BALTIMORE, MD 21201
Internal Medicine (Hematology & Oncology)
821 N EUTAW ST
BALTIMORE, MD 21201

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1306513882, enumerated as an "individual" on August 24, 2021.

The provider is located at 821 N EUTAW ST BALTIMORE, MD 21201 and the phone number is (410) 225-5452.

Counselor with taxonomy code 101YA0400X and a focus in Addiction (Substance Use Disorder).