Dr. Dianna E Ryan, MD
Dr. Dianna E Ryan is a General Practice Physician provider (General Practice) practicing in Ft Sill, OK, registered in the NPPES registry with NPI 1871697276 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1871697276 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Dianna E Ryan |
| Credential | MD |
| Sex | Female |
| Practice address | 4301 MOW WAY RD, RACH: PHYSICAL EXAM SECTION, Ft Sill, OK, 73503 |
| Phone | 5804582228 |
| Enumeration date | 2006-09-07 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208D00000X | General Practice Physician | Secondary | 17986 | NE |
| 208D00000X | General Practice Physician | Primary | 20415 | OK |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Copy-ready billing details
Provider: Dianna Ryan, MD NPI: 1871697276 Taxonomy: 208D00000X (General Practice Physician) Address: 4301 MOW WAY RD, RACH: PHYSICAL EXAM SECTION, Ft Sill, OK, 73503
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1437252079 | Timothy Phelps | Individual | Marriage & Family Therapist | Fort Sill, OK |
| 1093819740 | Rodrigo Mariano | Individual | Internal Medicine Physician | Fort Sill, OK |
| 1124109285 | Denise Henderson | Individual | Clinical Social Worker | Ft. Sill, OK |
| 1154404630 | Kathleen Williams | Individual | Registered Nurse | Fort Sill, OK |
| 1568545465 | Norvis Haygood | Individual | Audiologist | Ft Sill, OK |
| 1902980972 | William Stevenson | Individual | Clinical Social Worker | Fort Sill, OK |
| 1376629311 | Stephen Manley | Individual | Physician Assistant | Ft Sill, OK |
| 1336212877 | Danielle Nichols | Individual | Community Health Registered Nurse | Ft. Sill, OK |
Verify this record
Cross-check NPI 1871697276 against the authoritative CMS record: view Dr. Dianna E Ryan 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 Dianna Ryan practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.