Dr. Stephen Wallace Hartz, M.D.
Dr. Stephen Wallace Hartz is a General Practice Physician provider (General Practice) practicing in Flagstaff, AZ, registered in the NPPES registry with NPI 1669492757 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1669492757 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Stephen Wallace Hartz |
| Credential | M.D. |
| Sex | Male |
| Practice address | 1200 N BEAVER ST, Flagstaff, AZ, 86001 |
| Phone | 9287793366 |
| Enumeration date | 2006-07-20 |
| Last updated in NPPES | 2024-07-16 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 146D00000X | Personal Emergency Response Attendant | Secondary | 12105 | AZ |
| 207P00000X | Emergency Medicine Physician | Secondary | 12105 | AZ |
| 208D00000X | General Practice Physician | Primary | 12105 | 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: Stephen Hartz, M.D. NPI: 1669492757 Taxonomy: 208D00000X (General Practice Physician) Address: 1200 N BEAVER ST, Flagstaff, AZ, 86001
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1588663835 | Ted Branstetter | Individual | Surgical Physician Assistant | Flagstaff, AZ |
| 1073515862 | Jeffrey Gruner | Individual | Surgical Critical Care Physician | Flagstaff, AZ |
| 1477546356 | David Coy | Individual | Critical Care Medicine (Internal Medicine) Physician | Flagstaff, AZ |
| 1528052560 | Brian Mulkerin | Individual | Anesthesiology Physician | Flagstaff, AZ |
| 1700871688 | Elizabeth Harding | Individual | Hospitalist Physician | Flagstaff, AZ |
| 1851387278 | John Mougin | Individual | Internal Medicine Physician | Flagstaff, AZ |
| 1518957570 | Linda Mullen | Individual | Psychiatry Physician | Flagstaff, AZ |
| 1972584779 | Charles Coffman | Individual | Emergency Medicine Physician | Flagstaff, AZ |
Verify this record
Cross-check NPI 1669492757 against the authoritative CMS record: view Dr. Stephen Wallace Hartz 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 2024-07-16.