Dallyn Porter Udall, DO
NPI 1164088605ActiveIndividual· Orthopaedic Surgery, Adult Reconstructive Orthopaedic Surgery· Gilbert, AZ
Orthopaedic Surgery, Adult Reconstructive Orthopaedic Surgery (DO) in Gilbert, Arizona, trained at At Still University of Health Sciences, College of Osteo Med, Kirksville (class of 2019). 87 Medicare patients in 2024, $20,114 paid; nearly all of their 513 Part D prescriptions were generic (99%). Smith+nephew, Inc. was the largest of 7 companies reporting payments in 2025, $3,682 in all, mostly grants.
Overview
| NPI | 1164088605 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | May 9, 2019 |
| Last updated in NPPES | May 2, 2025 |
| Certified by provider | May 2, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery, Adult Reconstructive Orthopaedic Surgery Primary | 207XS0114X | 011544 | AZ |
| Orthopaedic Surgery | 207X00000X | 20A19340 | CA |
| Orthopaedic Surgery, Adult Reconstructive Orthopaedic Surgery | 207XS0114X | 20A19340 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
| Orthopaedic Surgery | 207X00000X | 011544 | AZ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Orthopedic Surgery (AZ); Practitioner - Orthopedic Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 87 |
|---|---|
| Services billed | 144 across 15 procedure codes |
| Paid by Medicare | $20,114 |
Part D prescriptions in 2024
| Prescriptions (claims) | 513 · 519 30-day fills |
|---|---|
| Patients | 131 |
| Total drug cost | $5,651 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | At Still University of Health Sciences, College of Osteo Med, Kirksville |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Orthopedic Surgery |
Medical group
- Orthopedic Specialists of North America PLLCPhoenix, AZ · 309 clinicians
Hospital affiliations
- Arizona Spine and Joint HospitalMesa, AZ
- Mercy Gilbert Medical CenterGilbert, AZ
Industry payments (Open Payments)
- 2025$3,682 · 20 payments from 7 companies
- 2024$4,302 · 26 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Smith+nephew, Inc. | $1,500 | 1 |
| Stryker Corporation | $1,196 | 10 |
| Zimmer Biomet Holdings, Inc. | $413.03 | 2 |
| Depuy Synthes Sales Inc. | $241.93 | 4 |
| Illuminoss Medical, Inc. | $127.24 | 1 |
What the 2025 payments were for
- Grant$1,500 · 1 payment
- Food and Beverage$1,424 · 15 payments
- Travel and Lodging$397.12 · 3 payments
- Education$361.68 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Orthopaedic Surgery, Adult Reconstructive Orthopaedic Surgery providers in Arizona