Marshall Cook, MD
NPI 1205813318 · Orthopaedic Surgery Physician · Fort Defiance, AZ
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marshall Cook, MD is a Orthopaedic Surgery Physician provider in Fort Defiance, AZ (NPI 1205813318).
Provider details
- NPI number
- 1205813318
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- AZ19360 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
Registry dates
- Enumerated
- 2005-12-29
- Last updated
- 2022-03-17
- Certified
- 2022-03-04
Frequently asked questions
- What is Marshall Cook's NPI number?
- Marshall Cook's National Provider Identifier (NPI) is 1205813318, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marshall Cook's specialty?
- Marshall Cook is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Marshall Cook located?
- Marshall Cook's practice location on file with NPPES is Corner of Route N12 and N7, Fort Defiance, AZ 86504-0649.
- What is Marshall Cook's phone number?
- The practice phone number listed in the NPPES registry for Marshall Cook is (928) 729-8000.
- Does Marshall Cook accept Medicare?
- Marshall Cook is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marshall Cook's NPI active?
- Yes — Marshall Cook's NPI (1205813318) is active in the NPPES registry as of the last update on 2022-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.