NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mary Black Physician Services LLC

Nurse Practitioner in Duncan, SC · enumerated 2006 · authorized official Tammy Mccollum, Business Office Director.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1811950645

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Mary Black Physician Services LLC
Practice address 170 Ridgeview Center Dr, Duncan, SC, 29334
Phone (864) 573-3124
Fax (864) 582-5188
Enumeration date Apr 11, 2006
Last updated in NPPES Jun 20, 2018

Taxonomy & classification

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers Secondary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Primary

Authorized official

Name Tammy Mccollum
Title Business Office Director
Phone (864) 253-8063

Other identifiers

Identifier Type State Issuer
800572901 Other - TAX ID
GP4319 Medicaid SC -
GP4168 Medicaid SC -
GP4169 Medicaid SC -
GP4353 Medicaid SC -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for Mary Black Physician Services LLC?
NPPES lists Tammy Mccollum (Business Office Director) as the authorized official for this organization.
What is the NPI number for Mary Black Physician Services LLC?
The NPI for Mary Black Physician Services LLC is 1811950645, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-20.