Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David Christianson, M.D.

Hematology & Oncology Physician in Billings, MT · enumerated 2005.

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

National Provider Identifier

1770565871

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Registry record

Entity type Individual (Type 1)

Name David Christianson

Credential M.D.

Sex Male

Practice address 1315 Golden Valley Cir, Billings, MT, 59102

Phone (406) 238-6290

Fax (406) 238-6961

Enumeration date Nov 16, 2005

Last updated in NPPES Sep 8, 2010

Taxonomy & licenses

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License 10533 (MT) Secondary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License 7008A (WY) Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 10533 (MT) Primary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 7008A (WY) Secondary

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
810511516012	Other	-	EBMS
312901	Other	WY	BLUE CROSS SHERIDAN WY
0079237	Medicaid	MT	-
119842400	Medicaid	WY	-
000097475	Other	MT	BLUE CROSS
312902	Other	WY	BLUE CROSS CODY WY

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

Is NPI 1770565871 active?

Yes, as of the latest NPPES snapshot, NPI 1770565871 is active (record last updated 2010-09-08).

How do I verify David Christianson's NPI record?

Cross-check NPI 1770565871 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-09-08.