Dr. Michael Greiner, PHARMD
Dr. Michael Greiner is a Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist provider (Pharmacist) practicing in Arvada, CO, registered in the NPPES registry with NPI 1639724222 since 2019. The credential PHARMD stands for Doctor of Pharmacy. Practices at Dillon Companies LLC (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1639724222 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Michael Greiner |
| Credential | PHARMD |
| Sex | Male |
| Practice address | 8055 SHERIDAN BLVD, Arvada, CO, 80003 |
| Phone | 3034875325 |
| Fax | 3034875326 |
| Enumeration date | 2019-08-09 |
| Last updated in NPPES | 2026-05-05 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1835P0018X | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | Primary | PHA.0022807 | CO |
PHARMD — Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential
Copy-ready billing details
Provider: Michael Greiner, PHARMD NPI: 1639724222 Taxonomy: 1835P0018X (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist) Address: 8055 SHERIDAN BLVD, Arvada, CO, 80003
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1144256330 | Dillon Companies LLC | Organization | Community/Retail Pharmacy | Arvada, CO |
| 1720321953 | Ngoccam Dyster | Individual | Pharmacist | Arvada, CO |
| 1295178440 | Artem Muradyan | Individual | Pharmacist | Arvada, CO |
| 1336582808 | Randall Richards | Individual | Pharmacist | Arvada, CO |
| 1750058582 | Angela Nguyen | Individual | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | Arvada, CO |
Verify this record
Cross-check NPI 1639724222 against the authoritative CMS record: view Dr. Michael Greiner 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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Where does Michael Greiner practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2026-05-05.