Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ryan Gianatasio, M.D.

Vascular Neurology Physician in Rapid City, SD · enumerated 2008 · practices at Monument Health Rapid City Hospital, Inc..

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

National Provider Identifier

1144489550

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Registry record

Entity type Individual (Type 1)

Name Dr. Ryan Gianatasio

Credential M.D.

Sex Male

Practice address 677 Cathedral Dr, Rapid City, SD, 57701

Phone (605) 755-4150

Enumeration date Jun 2, 2008

Last updated in NPPES Nov 9, 2023

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License P3532 (TX) Secondary

2084V0102X Vascular Neurology Physician Allopathic & Osteopathic Physicians · License 14259 (SD) Primary

2084V0102X Vascular Neurology Physician Allopathic & Osteopathic Physicians · License 83282 (SC) Secondary

2084V0102X Vascular Neurology Physician Allopathic & Osteopathic Physicians · License 260100 (NY) Secondary

2084V0102X Vascular Neurology Physician Allopathic & Osteopathic Physicians · License MD481374 (PA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

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Frequently asked questions

How do I verify Ryan Gianatasio's NPI record?

Cross-check NPI 1144489550 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1144489550 active?

Yes, as of the latest NPPES snapshot, NPI 1144489550 is active (record last updated 2023-11-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-09.