Dr. Guy Alan Petersen, M.D.
Dr. Guy Alan Petersen is a General Practice Physician provider (General Practice) practicing in Tucson, AZ, registered in the NPPES registry with NPI 1346638939 since 2015. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1346638939 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Guy Alan Petersen |
| Credential | M.D. |
| Sex | Male |
| Practice address | Tucson, AZ, 85712 |
| Phone | 5205829399 |
| Enumeration date | 2015-01-05 |
| Last updated in NPPES | 2015-01-05 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208D00000X | General Practice Physician | Primary | 22232 | AZ |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Copy-ready billing details
Provider: Guy Petersen, M.D. NPI: 1346638939 Taxonomy: 208D00000X (General Practice Physician) Address: Tucson, AZ, 85712
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1336149277 | Jolyon Schilling | Individual | Vascular Surgery Physician | Tucson, AZ |
| 1992705388 | Dennis Westin | Individual | Psychiatry Physician | Tucson, AZ |
| 1528069838 | Solomon Grossman | Individual | Mental Health Counselor | Tucson, AZ |
| 1871587659 | Bruce L Dalkin MD PC | Organization | Urology Physician | Tucson, AZ |
| 1972597771 | J Paul Yurkanin | Organization | Urology Physician | Tucson, AZ |
| 1518951318 | Southern Arizona Urologic Oncology Ltd | Organization | Radiation Oncology Physician | Tucson, AZ |
| 1104814219 | Archana Reddy | Individual | Ophthalmology Physician | Tucson, AZ |
| 1720024656 | Raymond Graap | Individual | Endocrinology, Diabetes & Metabolism Physician | Tucson, AZ |
Verify this record
Cross-check NPI 1346638939 against the authoritative CMS record: view Dr. Guy Alan Petersen 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 2026-07-11. Provider record last updated 2015-01-05.