Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ricardo Ernesto Alvillar, M.D.

Rheumatology Physician in Rapid City, SD · enumerated 2006.

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

National Provider Identifier

1386694255

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Registry record

Entity type Individual (Type 1)

Name Dr. Ricardo Ernesto Alvillar

Credential M.D.

Sex Male

Practice address 2820 Mount Rushmore Rd, Rapid City, SD, 57701

Phone (605) 342-3280

Fax (605) 721-8458

Enumeration date May 11, 2006

Last updated in NPPES Jul 3, 2008

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 5505 (SD) Primary

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

Other identifiers

Identifier	Type	State	Issuer
2197720	Other	SD	AMERICAS PPO
38042	Other	SD	SIOUX VALLEY HEALTH PLAN
6631020	Medicaid	SD	-
P00146501	Other	SD	RAILROAD MEDICARE
4995260	Other	SD	BCBS
120084400	Medicaid	WY	-
5505	Other	SD	DAKOTACARE

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

Where does Ricardo Alvillar practice?

The practice location on file with NPPES is in Rapid City, SD. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Ricardo Alvillar?

The National Provider Identifier (NPI) for Ricardo Alvillar is 1386694255, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-03.