DR. MARK CALVIN MONAHAN PH.D.
NPI 1558416834
Psychologist in Norfolk, VA

NPI Status: Active since January 24, 2007

Contact Information

1562 MITSCHER AVE
STE 250
NORFOLK, VA
ZIP 23551
Phone: (757) 836-5538

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  • Individual
  • Male
  • Psychologist

About MARK MONAHAN

This page provides the complete NPI Profile along with additional information for Mark Monahan, a provider established in Norfolk, Virginia with a medical specialization in Psychologist. The healthcare provider is registered in the NPI registry with number 1558416834 assigned on January 2007. The practitioner's primary taxonomy code is 103T00000X with license number PSY 463 (HI). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1558416834
Provider Name
DR. MARK CALVIN MONAHAN PH.D.
Gender
Male
Entity Type
Individual
Location Address
1562 MITSCHER AVE STE 250 NORFOLK, VA 23551
Location Phone
(757) 836-5538
Mailing Address
727 DISSDALE LN CHESAPEAKE, VA 23320
Mailing Phone
(757) 410-0525
Is Sole Proprietor?
Yes
Enumeration Date
01-24-2007
Last Update Date
07-08-2007
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A psychologist like Mark Monahan studies cognitive, emotional, social processes and behavior by observing, interpreting, and recording how people relate to one another and to their environments. Psychologists gather information and evaluate behavior through controlled laboratory experiments, psychoanalysis, psychotherapy or through personality, performance, aptitude, or intelligence tests, and use this information when testing theories in their research or when treating patients.

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

Psychologist

Taxonomy Code
103T00000X
Type
Behavioral Health & Social Service Providers
License No.
PSY 463
License State
HI
Taxonomy Description
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.

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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 1558416834, 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
5
Doubled → 10 → 1 + 0
Pos 4
8
Unchanged
Pos 5
4
Doubled → 8
Pos 6
1
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
8
Unchanged
Pos 9
3
Doubled → 6
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 5 → 10 → 1 4 → 8 6 → 12 → 3 3 → 6

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 + 2 + 8 + 6 + 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 1558416834.

Other Providers at the Same Location


The following 5 providers are registered at the same or a nearby location.

Dentist (General Practice)
1562 MITSCHER AVE, SUITE 250
NORFOLK, VA 23551
Dentist (General Practice)
1562 MITSCHER AVE, SUITE 250
NORFOLK, VA 23551
Dentist (Oral and Maxillofacial Surgery)
1562 MITSCHER AVE
NORFOLK, VA 23551
Family Medicine
1562 MITSCHER AVE
NORFOLK, VA 23551
Dentist
1562 MITSCHER AVE
NORFOLK, VA 23551

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1558416834, enumerated as an "individual" on January 24, 2007.

The provider is located at 1562 MITSCHER AVE STE 250 NORFOLK, VA 23551 and the phone number is (757) 836-5538.

Psychologist with taxonomy code 103T00000X.