Mallin & Seidel Orthopaedic Oncology PLLC
NPI 1255343471 · Orthopaedic Surgery Physician · Scottsdale, AZ
Mallin & Seidel Orthopaedic Oncology PLLC is a Orthopaedic Surgery Physician organization in Scottsdale, AZ (NPI 1255343471).
Provider details
- NPI number
- 1255343471
- Entity type
- Organization
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Matthew Seidel, Authorized Partner(602) 258-8500
- License
- 32887 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Orthopaedic Surgical Oncology of Arizona
Registry dates
- Enumerated
- 2006-08-13
- Last updated
- 2022-07-21
Frequently asked questions
- What is Mallin & Seidel Orthopaedic Oncology PLLC's NPI number?
- Mallin & Seidel Orthopaedic Oncology PLLC's National Provider Identifier (NPI) is 1255343471, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mallin & Seidel Orthopaedic Oncology PLLC?
- Mallin & Seidel Orthopaedic Oncology PLLC is classified in the NPPES registry as Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Mallin & Seidel Orthopaedic Oncology PLLC located?
- Mallin & Seidel Orthopaedic Oncology PLLC's practice location on file with NPPES is 9700 N 91st St, Scottsdale, AZ 85258-5054.
- What is Mallin & Seidel Orthopaedic Oncology PLLC's phone number?
- The practice phone number listed in the NPPES registry for Mallin & Seidel Orthopaedic Oncology PLLC is (602) 258-8500.
- Who is the authorized official for Mallin & Seidel Orthopaedic Oncology PLLC?
- The authorized official listed on Mallin & Seidel Orthopaedic Oncology PLLC's NPPES record is Matthew Seidel, Authorized Partner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mallin & Seidel Orthopaedic Oncology PLLC's NPI active?
- Yes — Mallin & Seidel Orthopaedic Oncology PLLC's NPI (1255343471) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.