DR. PHILIP ANDREW THORN L.C.P.C.
NPI 1558418178
Counselor - Mental Health in Waldorf, MD

NPI Status: Active since January 04, 2007

Contact Information

603 POST OFFICE RD
WALDORF, MD
ZIP 20602
Phone: (301) 705-7593
Fax: (301) 705-8753

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  • Individual
  • Male
  • Counselor
  • Mental Health

About PHILIP THORN

This page provides the complete NPI Profile along with additional information for Philip Thorn, a provider established in Waldorf, Maryland with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1558418178 assigned on January 2007. The practitioner's primary taxonomy code is 101YM0800X with license number LC0011 (MD). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1558418178
Provider Name
DR. PHILIP ANDREW THORN L.C.P.C.
Gender
Male
Entity Type
Individual
Location Address
603 POST OFFICE RD WALDORF, MD 20602
Location Phone
(301) 705-7593
Location Fax
(301) 705-8753
Mailing Address
13930 MOUNT EAGLE LN WALDORF, MD 20601
Mailing Phone
(301) 843-0004
Mailing Fax
(301) 705-8753
Is Sole Proprietor?
Yes
Enumeration Date
01-04-2007
Last Update Date
09-11-2025
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A mental health counselor like Philip Thorn provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

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 Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers
License No.
LC0011
License State
MD

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)
1101YP2500XBehavioral Health & Social Service Providers

Counselor
Professional

LC0011 (MD)

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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 1558418178, 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 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
5
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
8
Unchanged
Pos 5
4
Doubled → 8
Pos 6
1
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
1
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
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 5 → 10 → 1 4 → 8 8 → 16 → 7 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 0 + 8 + 8 + 1 + 1 + 6 + 1 + 1 + 4 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1558418178.

Other Providers at the Same Location


The following 11 providers are registered at the same or a nearby location.

Dentist (General Practice)
603 POST OFFICE RD, 208
WALDORF, MD 20602
Dentist (General Practice)
603 POST OFFICE RD, 208
WALDORF, MD 20602
Psychologist
603 POST OFFICE RD, SUITE 210
WALDORF, MD 20602
Counselor (Mental Health)
603 POST OFFICE RD, SUITE 210
WALDORF, MD 20602
Social Worker (Clinical)
603 POST OFFICE RD, SUITE 210
WALDORF, MD 20602
Counselor (Professional)
603 POST OFFICE RD, SUITE 210
WALDORF, MD 20602
Psychologist (Clinical)
603 POST OFFICE RD, SUITE 210
WALDORF, MD 20602
Psychologist (Clinical)
603 POST OFFICE RD, SUITE 210
WALDORF, MD 20602
Counselor (Professional)
603 POST OFFICE RD, STE 210
WALDORF, MD 20602
Counselor (Professional)
603 POST OFFICE RD, SUITE 210
WALDORF, MD 20602
Counselor (Mental Health)
603 POST OFFICE RD
WALDORF, MD 20602

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1558418178, enumerated as an "individual" on January 04, 2007.

The provider is located at 603 POST OFFICE RD WALDORF, MD 20602 and the phone number is (301) 705-7593.

Counselor with taxonomy code 101YM0800X and a focus in Mental Health.