PATHOLOGY SCIENCES MEDICAL GROUP, PC
NPI 1366499733
Pathology - Anatomic Pathology & Clinical Pathology in Norfolk, VA

NPI Status: Active since May 30, 2006

Contact Information

600 GRESHAM DR
SENTARA NORFOLK GEN HOSPITAL PATH DEPT
NORFOLK, VA
ZIP 23507
Phone: (757) 388-3221
Fax: (614) 583-3300

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  • Organization
  • Pathology
  • Anatomic Pathology & Clinical Pathology

About PATHOLOGY SCIENCES MEDICAL GROUP, PC

This page provides the complete NPI Profile along with additional information for Pathology Sciences Medical Group, Pc, a provider established in Norfolk, Virginia operating as a Pathology, focusing in anatomic pathology & clinical pathology . The healthcare provider is registered in the NPI registry with number 1366499733 assigned on May 2006. The practitioner's primary taxonomy code is 207ZP0102X. The provider is registered as an organization and their NPI record was last updated March 2026. 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 Mr. Hassan R Tahhan Md (Vice President)

NPI
1366499733
Provider Name
PATHOLOGY SCIENCES MEDICAL GROUP, PC
Entity Type
Organization
Location Address
600 GRESHAM DR SENTARA NORFOLK GEN HOSPITAL PATH DEPT NORFOLK, VA 23507
Location Phone
(757) 388-3221
Location Fax
(614) 583-3300
Mailing Address
PO BOX 79671 BALTIMORE, MD 21279
Mailing Phone
(800) 554-2695
Mailing Fax
(614) 583-3300
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
05-30-2006
Last Update Date
03-27-2026
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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

Pathology Anatomic Pathology & Clinical Pathology

Taxonomy Code
207ZP0102X
Type
Allopathic & Osteopathic Physicians
Taxonomy Description
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

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.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

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

MR. HASSAN R TAHHAN MD

Authorized Official Title
VICE PRESIDENT
Authorized Official Phone
(757) 388-3221

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
CE9565OTHER (01)VARR MEDICARE

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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 1366499733, 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 77. The final step is to find the difference between that total and the next multiple of ten (80 - 77 = 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
3
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
6
Unchanged
Pos 5
4
Doubled → 8
Pos 6
9
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
7
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 6 → 12 → 3 4 → 8 9 → 18 → 9 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 1 + 2 + 6 + 8 + 9 + 1 + 8 + 7 + 6 + 24 = 77

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

The next multiple of ten after 77 is 80. The difference is the calculated check digit.

80 - 77 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1366499733.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

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Thoracic Surgery (Cardiothoracic Vascular Surgery)
600 GRESHAM DR, SUITE 8600
NORFOLK, VA 23507
Physical Therapist (Neurology)
600 GRESHAM DR
NORFOLK, VA 23507
Thoracic Surgery (Cardiothoracic Vascular Surgery)
600 GRESHAM DR, SUITE 8600
NORFOLK, VA 23507
Thoracic Surgery (Cardiothoracic Vascular Surgery)
600 GRESHAM DR, SUITE 8600
NORFOLK, VA 23507
Thoracic Surgery (Cardiothoracic Vascular Surgery)
600 GRESHAM DR, SUITE 8600
NORFOLK, VA 23507
Pharmacist
600 GRESHAM DR
NORFOLK, VA 23507
Otolaryngology (Plastic Surgery within the Head & Neck)
600 GRESHAM DR, SUITE 1100
NORFOLK, VA 23507
Orthopaedic Surgery
600 GRESHAM DR, STE 204
NORFOLK, VA 23507
Otolaryngology (Otology & Neurotology)
600 GRESHAM DR, SUITE 1100
NORFOLK, VA 23507
Internal Medicine (Pulmonary Disease)
600 GRESHAM DR
NORFOLK, VA 23507
Radiology (Radiation Oncology)
600 GRESHAM DR
NORFOLK, VA 23507
Otolaryngology
600 GRESHAM DR, SUITE 1100
NORFOLK, VA 23507
Radiology (Radiation Oncology)
600 GRESHAM DR
NORFOLK, VA 23507
Registered Nurse (Administrator)
600 GRESHAM DR
NORFOLK, VA 23507
Medical Genetics, Ph.D. Medical Genetics
600 GRESHAM DR
NORFOLK, VA 23507
Ophthalmology
600 GRESHAM DR
NORFOLK, VA 23507
Pathology (Anatomic Pathology & Clinical Pathology)
600 GRESHAM DR
NORFOLK, VA 23507
Pathology (Anatomic Pathology & Clinical Pathology)
600 GRESHAM DR, SENTARA NORFOLK GENERAL HOSPITAL PATH DEPT
NORFOLK, VA 23507
Physical Therapist
600 GRESHAM DR
NORFOLK, VA 23507

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1366499733, enumerated as an "organization" on May 30, 2006.

The provider is located at 600 GRESHAM DR SENTARA NORFOLK GEN HOSPITAL PATH DEPT NORFOLK, VA 23507 and the phone number is (757) 388-3221.

Pathology with taxonomy code 207ZP0102X and a focus in Anatomic Pathology & Clinical Pathology.

The provider might be accepting Accepts: Railroad Medicare, Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.