DR. HAROLD ANTHONY ZIESAT PH.D.
NPI 1811101769
Psychologist - Clinical in Columbia, MD

NPI Status: Active since May 10, 2007

Contact Information

8640 GUILFORD RD STE 252
COLUMBIA, MD
ZIP 21046
Phone: (410) 997-1183
Fax: (410) 997-1183

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  • Individual
  • Male
  • Psychologist
  • Clinical

About HAROLD ZIESAT

This page provides the complete NPI Profile along with additional information for Harold Ziesat, a provider established in Columbia, Maryland with a medical specialization in Psychologist, focusing in clinical . The healthcare provider is registered in the NPI registry with number 1811101769 assigned on May 2007. The practitioner's primary taxonomy code is 103TC0700X with license number 02101 (MD). The provider is registered as an individual and his NPI record was last updated 8 years ago.

NPI
1811101769
Provider Name
DR. HAROLD ANTHONY ZIESAT PH.D.
Gender
Male
Entity Type
Individual
Location Address
8640 GUILFORD RD STE 252 COLUMBIA, MD 21046
Location Phone
(410) 997-1183
Location Fax
(410) 997-1183
Mailing Address
8640 GUILFORD RD STE 252 COLUMBIA, MD 21046
Mailing Phone
(410) 997-1183
Mailing Fax
(410) 997-1183
Is Sole Proprietor?
Yes
Enumeration Date
05-10-2007
Last Update Date
08-10-2018
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A clinical psychologist like Harold Ziesat 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.
02101
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.

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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 1811101769, 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 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
8
Unchanged
Pos 3
1
Doubled → 2
Pos 4
1
Unchanged
Pos 5
1
Doubled → 2
Pos 6
0
Unchanged
Pos 7
1
Doubled → 2
Pos 8
7
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
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 1 → 2 1 → 2 1 → 2 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 2 + 1 + 2 + 0 + 2 + 7 + 1 + 2 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1811101769.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Psychiatry & Neurology (Psychiatry)
8640 GUILFORD RD STE 252
COLUMBIA, MD 21046
Community/Behavioral Health
8640 GUILFORD RD STE 252
COLUMBIA, MD 21046
Social Worker (Clinical)
8640 GUILFORD RD STE 252
COLUMBIA, MD 21046

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1811101769, enumerated as an "individual" on May 10, 2007.

The provider is located at 8640 GUILFORD RD STE 252 COLUMBIA, MD 21046 and the phone number is (410) 997-1183.

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