MARYLAND COUNSELING CENTERS, INC.
NPI 1982742433
Psychologist - Clinical in Rockville, MD

NPI Status: Active since February 04, 2007

Contact Information

20 COURTHOUSE SQ
SUITE 202
ROCKVILLE, MD
ZIP 20850
Phone: (301) 424-6955
Fax: (301) 424-4836

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  • Organization
  • Psychologist
  • Clinical

About MARYLAND COUNSELING CENTERS, INC.

This page provides the complete NPI Profile along with additional information for Maryland Counseling Centers, Inc., a provider established in Rockville, Maryland operating as a Psychologist, focusing in clinical . The healthcare provider is registered in the NPI registry with number 1982742433 assigned on February 2007. The practitioner's primary taxonomy code is 103TC0700X with license number 04068 (MD). The provider is registered as an organization and their NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Frederick John Oeltjen Ph.d. (President)

NPI
1982742433
Provider Name
MARYLAND COUNSELING CENTERS, INC.
Entity Type
Organization
Location Address
20 COURTHOUSE SQ SUITE 202 ROCKVILLE, MD 20850
Location Phone
(301) 424-6955
Location Fax
(301) 424-4836
Mailing Address
20 COURTHOUSE SQ SUITE 202 ROCKVILLE, MD 20850
Mailing Phone
(301) 424-6955
Mailing Fax
(301) 424-4836
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
02-04-2007
Last Update Date
09-11-2025
Code Navigator

A clinical psychologist like Maryland Counseling Centers, Inc. assesses, diagnoses, and treats mental, emotional, and behavioral disorders. Clinical psychologists help people deal with problems ranging from short-term personal issues to severe, chronic conditions. Clinical psychologists interview patients, give diagnostic tests, provide psychotherapy and design behavior modification programs to help patients.

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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 Clinical

Taxonomy Code
103TC0700X
Type
Behavioral Health & Social Service Providers
License No.
04068
License State
MD
Taxonomy Description
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

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

LC1153 (MD)
2103TC0700XBehavioral Health & Social Service Providers

Psychologist
Clinical

01189 (MD)
3103TC0700XBehavioral Health & Social Service Providers

Psychologist
Clinical

PSY964 (DC)
4103TC0700XBehavioral Health & Social Service Providers

Psychologist
Clinical

04097 (MD)
51041C0700XBehavioral Health & Social Service Providers

Social Worker
Clinical

MD08541 (MD)
61041C0700XBehavioral Health & Social Service Providers

Social Worker
Clinical

08843 (MD)
71041C0700XBehavioral Health & Social Service Providers

Social Worker
Clinical

LICSW (DC)

Group Taxonomy 193400000X MULTIPLE SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. FREDERICK JOHN OELTJEN PH.D.

Authorized Official Title
PRESIDENT
Authorized Official Phone
(301) 424-6955

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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 1982742433, we treat the final digit (3) 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 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).

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
8
Doubled → 16 → 1 + 6
Pos 4
2
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
4
Unchanged
Pos 7
2
Doubled → 4
Pos 8
4
Unchanged
Pos 9
3
Doubled → 6
Check
3
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 8 → 16 → 7 7 → 14 → 5 2 → 4 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 6 + 2 + 1 + 4 + 4 + 4 + 4 + 6 + 24 = 67

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

The next multiple of ten after 67 is 70. The difference is the calculated check digit.

70 - 67 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1982742433.

Other Providers at the Same Location


The following 7 providers are registered at the same or a nearby location.

Counselor (Professional)
20 COURTHOUSE SQ, SUITE 202
ROCKVILLE, MD 20850
Psychologist (Clinical)
20 COURTHOUSE SQ, SUITE 202
ROCKVILLE, MD 20850
Psychologist (Clinical)
20 COURTHOUSE SQ, SUITE 202
ROCKVILLE, MD 20850
Psychologist (Clinical)
20 COURTHOUSE SQ, SUITE 202
ROCKVILLE, MD 20850
Social Worker (Clinical)
20 COURTHOUSE SQ, SUITE 202
ROCKVILLE, MD 20850
Dentist (General Practice)
20 COURTHOUSE SQ, STE 105
ROCKVILLE, MD 20850
Clinic/Center (Dental)
20 COURTHOUSE SQ, SUITE 105
ROCKVILLE, MD 20850

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1982742433, enumerated as an "organization" on February 04, 2007.

The provider is located at 20 COURTHOUSE SQ SUITE 202 ROCKVILLE, MD 20850 and the phone number is (301) 424-6955.

Psychologist with taxonomy code 103TC0700X and a focus in Clinical.