Matthew Willis, MD
NPI 1487733036 · Internal Medicine Physician · Fort Defiance, AZ
Matthew Willis, MD is a Internal Medicine Physician provider in Fort Defiance, AZ (NPI 1487733036).
Provider details
- NPI number
- 1487733036
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 221827 (MA)
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
Registry dates
- Enumerated
- 2006-11-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is Matthew Willis's NPI number?
- Matthew Willis's National Provider Identifier (NPI) is 1487733036, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Willis's specialty?
- Matthew Willis is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Willis located?
- Matthew Willis's practice location on file with NPPES is Fort Defiance Phs Hospital, Fort Defiance, AZ 86504.
- What is Matthew Willis's phone number?
- The practice phone number listed in the NPPES registry for Matthew Willis is (928) 729-8000.
- Is Matthew Willis's NPI active?
- Yes — Matthew Willis's NPI (1487733036) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.