NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert A Kessler, MD

Infectious Disease Physician in Sioux Falls, SD · enumerated 2008 · practices at Avera Mckennan.

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

National Provider Identifier

1932368602

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Robert A Kessler
Credential MD
Sex Male
Practice address 6709 S Minnesota Ave Ste 102, Sioux Falls, SD, 57108
Phone (605) 322-7250
Enumeration date Jun 6, 2008
Last updated in NPPES Feb 22, 2018

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD19000 (ME) Secondary
208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License MD19000 (ME) Secondary
207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 9108 (SD) Primary
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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Robert Kessler?
Robert Kessler is registered in NPPES with the primary taxonomy of Infectious Disease Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-02-22.