ALYSSA GREGOR LMSW
NPI 1023987245
Social Worker in Catonsville, MD

NPI Status: Active since November 04, 2025

Contact Information

516 N ROLLING RD
CATONSVILLE, MD
ZIP 21228
Phone: (410) 572-7981

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  • Individual
  • Female
  • Social Worker

About ALYSSA GREGOR

This page provides the complete NPI Profile along with additional information for Alyssa Gregor, a provider established in Catonsville, Maryland with a medical specialization in Social Worker. The healthcare provider is registered in the NPI registry with number 1023987245 assigned on November 2025. The practitioner's primary taxonomy code is 104100000X with license number 33738 (MD). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1023987245
Provider Name
ALYSSA GREGOR LMSW
Gender
Female
Entity Type
Individual
Location Address
516 N ROLLING RD CATONSVILLE, MD 21228
Location Phone
(410) 572-7981
Mailing Address
516 N ROLLING RD CATONSVILLE, MD 21228
Is Sole Proprietor?
No
Enumeration Date
11-04-2025
Last Update Date
11-04-2025
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A social worker like Alyssa Gregor helps patients solve and cope with problems in their everyday lives, diagnoses and treats mental, behavioral, and emotional problems. Social workers help in wide range of situations, such as adopting a child, illness, divorce, or unemployment.

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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

Social Worker

Taxonomy Code
104100000X
Type
Behavioral Health & Social Service Providers
License No.
33738
License State
MD
Taxonomy Description
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work 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 1023987245, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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
0
Unchanged
Pos 3
2
Doubled → 4
Pos 4
3
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
8
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
2
Unchanged
Pos 9
4
Doubled → 8
Check
5
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 9 → 18 → 9 7 → 14 → 5 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 4 + 3 + 1 + 8 + 8 + 1 + 4 + 2 + 8 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1023987245.

Other Providers at the Same Location


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

Dentist (General Practice)
516 N ROLLING RD, STE 102
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Ophthalmology
516 N ROLLING RD
CATONSVILLE, MD 21228
Pediatrics (Adolescent Medicine)
516 N ROLLING RD
CATONSVILLE, MD 21228
Internal Medicine (Geriatric Medicine)
516 N ROLLING RD, SUITE 106
CATONSVILLE, MD 21228
Internal Medicine
516 N ROLLING RD, SUITE 204
CATONSVILLE, MD 21228
Physical Therapist
516 N ROLLING RD, SUITE 302
BALTIMORE, MD 21228
Internal Medicine (Hematology & Oncology)
516 N ROLLING RD, STE 301
CATONSVILLE, MD 21228
Dentist (General Practice)
516 N ROLLING RD, SUITE 207
BALTIMORE, MD 21228
Dentist (Oral and Maxillofacial Surgery)
516 N ROLLING RD, SUITE 104
BALTIMORE, MD 21228
Internal Medicine (Geriatric Medicine)
516 N ROLLING RD, SUITE 106
CATONSVILLE, MD 21228
Internal Medicine (Hematology & Oncology)
516 N ROLLING RD, SUITE 301
CATONSVILLE, MD 21228
Internal Medicine
516 N ROLLING RD, SUITE 204
CATONSVILLE, MD 21228
Dentist (General Practice)
516 N ROLLING RD, SUITE 202
CATONSVILLE, MD 21228
Physical Therapy Assistant
516 N ROLLING RD, SUITE 302
CATONSVILLE, MD 21228
Nurse Practitioner (Adult Health)
516 N ROLLING RD, SUITE 107
CATONSVILLE, MD 21228
Nursing Care
516 N ROLLING RD, SUITE# 303
CATONSVILLE, MD 21228
Internal Medicine (Nephrology)
516 N ROLLING RD, SUITE 304
CATONSVILLE, MD 21228
Nurse Practitioner
516 N ROLLING RD, SUITE 304
CATONSVILLE, MD 21228
Physical Therapist
516 N ROLLING RD, SUITE 302
CATONSVILLE, MD 21228
Nurse Practitioner (Family)
516 N ROLLING RD, SUITE 304
CATONSVILLE, MD 21228

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1023987245, enumerated as an "individual" on November 04, 2025.

The provider is located at 516 N ROLLING RD CATONSVILLE, MD 21228 and the phone number is (410) 572-7981.

Social Worker with taxonomy code 104100000X.