COHEN DERMATOPATHOLOGY, PC
NPI 1922443324
Clinical Medical Laboratory in Columbia, MD

NPI Status: Active since April 30, 2013

Contact Information

5850 WATERLOO RD STE 140
COLUMBIA, MD
ZIP 21045
Phone: (410) 766-4175

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  • Organization
  • Clinical Medical Laboratory
  • CLIA Number: 21D1077515
  • CLIA Cert. Type: Independent
  • CLIA Exp. Date: 07-30-2027

About COHEN DERMATOPATHOLOGY, PC

This page provides the complete NPI Profile along with additional information for Cohen Dermatopathology, Pc, a provider established in Columbia, Maryland operating as a Clinical Medical Laboratory. The healthcare provider is registered in the NPI registry with number 1922443324 assigned on April 2013. The practitioner's primary taxonomy code is 291U00000X. The provider is registered as an organization and their NPI record was last updated December 2025. 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 provider's . The authorized official of this NPI record is Jian Xie (Manager)

NPI
1922443324
Provider Legal Name
COHEN DERMATOPATHOLOGY, PC
Other Organization Name
Other Name Type
(6)
Entity Type
Organization
Location Address
5850 WATERLOO RD STE 140 COLUMBIA, MD 21045
Location Phone
(410) 766-4175
Mailing Address
1111 S FREEPORT PKWY ATTN: PROVIDER ENROLLMENT COPPELL, TX 75019
Mailing Phone
(866) 588-3280
Mailing Fax
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
04-30-2013
Last Update Date
12-15-2025
Code Navigator

Establishments like Cohen Dermatopathology, Pc are healthcare facilities that may perform a wide range of laboratory procedures, assisted by doctors and medical technologists. Laboratories can be categorized according to their function as common diagnostic labs or specialty labs that conduct specialized or confirmatory tests. Different clinical laboratories could specialize in clinical chemistry, clinical microbiology, hematology, serology, clinical microscopy, cytopathology, molecular biology, or public health. Please inquire directly with this provider to confirm their test menu.

Clinical labs in the U.S. that perform human testing are regulated by the Centers for Medicare & Medicaid Services (CMS) through the Clinical Laboratory Improvement Amendments (CLIA) program. The purpose of the CLIA program is to guarantee the quality of laboratory testing. This provider has a CLIA number assigned, and undergoes regular inspections to ensure compliance and quality.

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

Clinical Medical Laboratory

Taxonomy Code
291U00000X
Type
Laboratories
Taxonomy Description
(1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology.

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)
1207ND0900XAllopathic & Osteopathic Physicians

Dermatology
Dermatopathology

 

Group Taxonomy 193400000X 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

JIAN XIE

Authorized Official Title
MANAGER
Authorized Official Phone
(626) 695-2199

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
21D1077515
Facility Type
Independent
Certificate Effective Date
July 31, 2025
Certificate Expiration Date
July 30, 2027
Laboratory Director
DR. ARASH RADFAR
Certificate Type
Certificate of Accreditation
Certificate Type Description
This is a CLIA certificate is issued to Cohen Dermatopathology, Pc on the basis of the laboratory's accreditation by an accreditation organization approved by CMS. This type of certificate is issued to a laboratories tha perform nonwaived (moderate and/or high complexity) testing.

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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 1922443324, 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
9
Unchanged
Pos 3
2
Doubled → 4
Pos 4
2
Unchanged
Pos 5
4
Doubled → 8
Pos 6
4
Unchanged
Pos 7
3
Doubled → 6
Pos 8
3
Unchanged
Pos 9
2
Doubled → 4
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 2 → 4 4 → 8 3 → 6 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 4 + 2 + 8 + 4 + 6 + 3 + 4 + 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 1922443324.

Other Providers at the Same Location


The following 12 providers are registered at the same or a nearby location.

Nurse Practitioner (Psychiatric/Mental Health)
5850 WATERLOO RD STE 140
COLUMBIA, MD 21045
Prosthetic/Orthotic Supplier
5850 WATERLOO RD STE 140
COLUMBIA, MD 21045
Counselor (Mental Health)
5850 WATERLOO RD STE 140
COLUMBIA, MD 21045
Prosthetic/Orthotic Supplier
5850 WATERLOO RD STE 140
COLUMBIA, MD 21045
Psychologist
5850 WATERLOO RD STE 140
COLUMBIA, MD 21045
Clinic/Center (Primary Care)
5850 WATERLOO RD STE 140
COLUMBIA, MD 21045
Registered Nurse
5850 WATERLOO RD STE 140
COLUMBIA, MD 21045
Community Based Residential Treatment Facility, Intellectual and/or Developmental Disabilities
5850 WATERLOO RD STE 140
COLUMBIA, MD 21045
Home Health
5850 WATERLOO RD STE 140
COLUMBIA, MD 21045
Home Health
5850 WATERLOO RD STE 140
COLUMBIA, MD 21045
Nurse Practitioner (Family)
5850 WATERLOO RD STE 140
COLUMBIA, MD 21045
Nurse Practitioner (Family)
5850 WATERLOO RD STE 140
COLUMBIA, MD 21045

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1922443324, enumerated as an "organization" on April 30, 2013.

The provider is located at 5850 WATERLOO RD STE 140 COLUMBIA, MD 21045 and the phone number is (410) 766-4175.

Clinical Medical Laboratory with taxonomy code 291U00000X.