Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Charles John Tupper Jr., M.D.
Psychiatry Physician in Helena, MT · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1700944121
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Registry record
Entity type Individual (Type 1)
Name Charles John Tupper Jr.
Credential M.D.
Sex Male
Practice address 2755 Colonial Dr, Helena, MT, 59601
Phone (406) 444-7500
Enumeration date Dec 5, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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 |
|---|---|---|---|
| 0045135 | Medicaid | MT | - |
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.
Frequently asked questions
Is NPI 1700944121 active?
Yes, as of the latest NPPES snapshot, NPI 1700944121 is active (record last updated 2007-07-08).
How do I verify Charles Tupper's NPI record?
Cross-check NPI 1700944121 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → John Johnson Clinical Genetics (M.D.) Physician · Helena, MT NPI 1760460612 Deanna Armstrong Psychiatry Physician · Helena, MT NPI 1003900184 Katherine Rappaport Child & Adolescent Psychiatry Physician · Helena, MT NPI 1225196603 Celeste Pfister Child & Adolescent Psychiatry Physician · Helena, MT NPI 1689732059 Keith Foster Child & Adolescent Psychiatry Physician · Helena, MT NPI 1417015801 James Reynolds Clinical Genetics (M.D.) Physician · Helena, MT NPI 1275691628 Montana Children'S Home & Hospital General Acute Care Hospital · Helena, MT NPI 1811056898 Jeannie Brandt Internal Medicine Physician · Helena, MT NPI 1669531638
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.