Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark S Foster, PHARMD

Pharmacist in Fort Thompson, SD · enumerated 2023.

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

National Provider Identifier

1275239535

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark S Foster

Credential PHARMD

Sex Male

Practice address 1323 Bia Route 4, Fort Thompson, SD, 57339

Phone (605) 245-1534

Enumeration date Feb 7, 2023

Last updated in NPPES Feb 7, 2023

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 051304475 (IL) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

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

Is NPI 1275239535 active?

Yes, as of the latest NPPES snapshot, NPI 1275239535 is active (record last updated 2023-02-07).

How do I verify Mark Foster's NPI record?

Cross-check NPI 1275239535 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Marlene Lacayo General Practice Dentistry · Fort Thompson, SD NPI 1801814512 Margaret Mall Nutrition Education Nutritionist · Fort Thompson, SD NPI 1609975721 Xinyu Li General Practice Physician · Fort Thompson, SD NPI 1144421504 Jill Thompson Optometrist · Fort Thompson, SD NPI 1174705115 Katherine Ping Registered Nurse · Fort Thomspon, SD NPI 1922323625 Michelle Tuohy Pharmacist · Fort Thompson, SD NPI 1790002582 Abby Bacon Registered Nurse · Fort Thompson, SD NPI 1417259565 Julie Meintsma Pharmacist · Ft Thompson, SD NPI 1215234141

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-02-07.