Dr. Mark Ryan Messer, PHARMD
Dr. Mark Ryan Messer is a Pharmacist provider (Pharmacist) practicing in Blanchester, OH, registered in the NPPES registry with NPI 1891567822 since 2023. The credential PHARMD stands for Doctor of Pharmacy.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1891567822 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Mark Ryan Messer |
| Credential | PHARMD |
| Sex | Male |
| Practice address | 1001 CHERRY ST STE A, Blanchester, OH, 45107 |
| Phone | 9377830270 |
| Fax | 9377830295 |
| Enumeration date | 2023-10-24 |
| Last updated in NPPES | 2023-10-24 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 183500000X | Pharmacist | Primary | 3233027 | OH |
PHARMD — Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential
Copy-ready billing details
Provider: Mark Messer, PHARMD NPI: 1891567822 Taxonomy: 183500000X (Pharmacist) Address: 1001 CHERRY ST STE A, Blanchester, OH, 45107
Verify this record
Cross-check NPI 1891567822 against the authoritative CMS record: view Dr. Mark Ryan Messer 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-10-24.