Dr. William J Casey III, M.D.
Dr. William J Casey III is a Plastic Surgery Physician provider (Plastic Surgery) practicing in Phoenix, AZ, registered in the NPPES registry with NPI 1689659286 since 2005. The credential MD stands for Doctor of Medicine. Practices at Mayo Clinic Arizona (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1689659286 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. William J Casey III |
| Credential | M.D. |
| Sex | Male |
| Practice address | 5779 E MAYO BLVD, Phoenix, AZ, 85054 |
| Phone | 4803018000 |
| Enumeration date | 2005-12-07 |
| Last updated in NPPES | 2020-09-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208200000X | Plastic Surgery Physician | Primary | 31373 | 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: William Casey, M.D. NPI: 1689659286 Taxonomy: 208200000X (Plastic Surgery Physician) Address: 5779 E MAYO BLVD, Phoenix, AZ, 85054
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1043219389 | Hasan Khamash | Individual | Nephrology Physician | Phoenix, AZ |
| 1467452508 | Deanna Singer | Individual | Physician Assistant | Phoenix, AZ |
| 1477535334 | Carolyn Peterson | Individual | Physician Assistant | Phoenix, AZ |
| 1093797953 | Karin Parrett | Individual | Physician Assistant | Phoenix, AZ |
| 1194707620 | John Voytek | Individual | Surgical Physician Assistant | Phoenix, AZ |
| 1548242969 | Robert Nemec | Individual | Surgical Physician Assistant | Phoenix, AZ |
| 1801878228 | Howard Asaki | Individual | Physician Assistant | Phoenix, AZ |
| 1245212661 | Randall Lippincott | Individual | Surgical Physician Assistant | Phoenix, AZ |
Verify this record
Cross-check NPI 1689659286 against the authoritative CMS record: view Dr. William J Casey III 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 2020-09-08.