Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Arvin Lopez Santos, MD

Q: What is the NPI number for Arvin Santos?

The National Provider Identifier (NPI) for Arvin Santos is 1336363324, a Type 1 (individual) record in the CMS NPPES registry.

Nephrology Physician in Sioux Falls, SD · enumerated 2007.

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

National Provider Identifier

1336363324

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Registry record

Entity type Individual (Type 1)

Name Dr. Arvin Lopez Santos

Credential MD

Sex Male

Practice address 1205 S Grange Ave Ste 201, Sioux Falls, SD, 57105

Phone (605) 328-8100

Fax (605) 328-8101

Enumeration date Apr 12, 2007

Last updated in NPPES Nov 20, 2021

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 7449 (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
6632190	Medicaid	SD	-

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 → Validate an NPI →

Frequently asked questions

What is the NPI number for Arvin Santos?

The National Provider Identifier (NPI) for Arvin Santos is 1336363324, a Type 1 (individual) record in the CMS NPPES registry.

Where does Arvin Santos practice?

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

Other providers at this practice address

Browse all →

Jaroslaw Mateuszczyk Critical Care Medicine (Internal Medicine) Physician · Sioux Falls, SD NPI 1003997230 Michelle Vandemark Adult Health Nurse Practitioner · Sioux Falls, SD NPI 1518283779 Leslie Greguson Nurse Practitioner · Sioux Falls, SD NPI 1699079095 Todd Persson Family Nurse Practitioner · Sioux Falls, SD NPI 1164811618 Richard Gandee Critical Care Medicine (Internal Medicine) Physician · Sioux Falls, SD NPI 1316331861 Weizhe Li Neurocritical Care Physician · Sioux Falls, SD NPI 1144741414 Ismail Omran Nephrology Physician · Sioux Falls, SD NPI 1023539590

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-20.