John H Cook, MD
John H Cook is a Specialist provider (Specialist) practicing in Billings, MT, registered in the NPPES registry with NPI 1609891621 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1609891621 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John H Cook |
| Credential | MD |
| Sex | Male |
| Practice address | 2900 12TH AVE N, SUITE 355W, Billings, MT, 59101 |
| Phone | 4062386470 |
| Fax | 4062386499 |
| Enumeration date | 2006-07-12 |
| Last updated in NPPES | 2014-01-20 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 174400000X | Specialist | Primary | 4370 | MT |
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 |
|---|---|---|---|
| 0055120 | Medicaid | MT | — |
Copy-ready billing details
Provider: John Cook, MD NPI: 1609891621 Taxonomy: 174400000X (Specialist) Address: 2900 12TH AVE N, SUITE 355W, Billings, MT, 59101
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1881696011 | Paul Holley | Individual | Anatomic Pathology & Clinical Pathology Physician | Billings, MT |
| 1790787935 | Yellowstone Pathology Institute, Inc. | Organization | Clinical Medical Laboratory | Billings, MT |
| 1770585903 | Duane Schultz | Individual | Anatomic Pathology & Clinical Pathology Physician | Billings, MT |
| 1639171713 | Michael Brown | Individual | Anatomic Pathology & Clinical Pathology Physician | Billings, MT |
| 1659376135 | Edward Dean | Individual | Interventional Cardiology Physician | Billings, MT |
| 1619972106 | Montana Heart Institute | Organization | Interventional Cardiology Physician | Billings, MT |
| 1588669071 | Robert Terry | Individual | Interventional Cardiology Physician | Billings, MT |
| 1407852312 | Michael Schabacker | Individual | Pain Medicine (Physical Medicine & Rehabilitation) Physician | Billings, MT |
Verify this record
Cross-check NPI 1609891621 against the authoritative CMS record: view John H Cook on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-09. Provider record last updated 2014-01-20.