John Udall, M.D.
NPI 1649477357 · Orthopaedic Surgery Physician · Mesa, AZ
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Udall, M.D. is a Orthopaedic Surgery Physician provider in Mesa, AZ (NPI 1649477357).
Provider details
- NPI number
- 1649477357
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 41972 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$67 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-06-27
- Last updated
- 2011-09-14
Frequently asked questions
- What is John Udall's NPI number?
- John Udall's National Provider Identifier (NPI) is 1649477357, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Udall's specialty?
- John Udall is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Udall located?
- John Udall's practice location on file with NPPES is 1432 S Dobson, Mesa, AZ 85202.
- What is John Udall's phone number?
- The practice phone number listed in the NPPES registry for John Udall is (480) 412-7400.
- Does John Udall accept Medicare?
- John Udall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Udall's NPI active?
- Yes — John Udall's NPI (1649477357) is active in the NPPES registry as of the last update on 2011-09-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.