NPI Portal NPI Lookup & Verification

Mark E Graham, RPH

Mark E Graham is a Pharmacist provider (Pharmacist) practicing in Mitchell, SD, registered in the NPPES registry with NPI 1003989146 since 2006. The credential RPH stands for Registered Pharmacist.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1003989146
Entity type Individual (Type 1)
Name Mark E Graham
Credential RPH
Sex Male
Practice address Mitchell, SD, 57301
Phone 6059965321
Fax 6059966090
Enumeration date 2006-11-16
Last updated in NPPES 2007-07-08

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
183500000X Pharmacist Primary 4179 SD

RPH — Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential

Copy-ready billing details
Provider: Mark Graham, RPH
NPI: 1003989146
Taxonomy: 183500000X (Pharmacist)
Address: Mitchell, SD, 57301

Other providers at this practice address

NPI Name Type Specialty Location
1316911209 Paul Rasmussen Individual Family Medicine Physician Mitchell, SD
1962476093 Michael Gerlach Individual Family Medicine Physician Mitchell, SD
1780658666 Martin Christensen Individual Family Medicine Physician Mitchell, SD
1104890235 Gina Hawkins Individual Physician Assistant Mitchell, SD
1669446787 Douglas Holum Individual Family Medicine Physician Mitchell, SD
1669410627 Mitchell Clinic Ltd Organization Family Medicine Physician Mitchell, SD
1699719906 Graham Pharmacy Organization Clinic Pharmacy Mitchell, SD
1265504229 Nicole Chenoweth Individual Pharmacist Mitchell, SD

Verify this record

Cross-check NPI 1003989146 against the authoritative CMS record: view Mark E Graham on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What specialty is Mark Graham?
Mark Graham is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2007-07-08.