NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Brock P. Whittenberger, MD

Hematology & Oncology Physician in Billings, MT · enumerated 2006.

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

National Provider Identifier

1033293444

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Brock P. Whittenberger
Credential MD
Sex Male
Practice address 801 N 29th St, Billings, MT, 59101
Phone (406) 238-2500
Enumeration date Oct 24, 2006
Last updated in NPPES Dec 16, 2014

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 7246 (MT) 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
17263 Other ND ND BCBS
0111010 Other MT MDCD PIN
101787000 Other WY MDCD PIN
000004741 Other MT BCBS PIN

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 Brock Whittenberger?
The National Provider Identifier (NPI) for Brock Whittenberger is 1033293444, a Type 1 (individual) record in the CMS NPPES registry.
Where does Brock Whittenberger practice?
The practice location on file with NPPES is in Billings, MT. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-12-16.