Allan Mattern, M.D.
NPI 1023175635 · Cardiovascular Disease Physician · Douglas, WY
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allan Mattern, M.D. is a Cardiovascular Disease Physician provider in Douglas, WY (NPI 1023175635).
Provider details
- NPI number
- 1023175635
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 3059A (WY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
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
- 2007-01-02
- Last updated
- 2016-12-22
Frequently asked questions
- What is Allan Mattern's NPI number?
- Allan Mattern's National Provider Identifier (NPI) is 1023175635, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allan Mattern's specialty?
- Allan Mattern is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Allan Mattern located?
- Allan Mattern's practice location on file with NPPES is 111 S 5th St, Douglas, WY 82633-2434.
- What is Allan Mattern's phone number?
- The practice phone number listed in the NPPES registry for Allan Mattern is (307) 358-7300.
- Does Allan Mattern accept Medicare?
- Allan Mattern is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Allan Mattern's NPI active?
- Yes — Allan Mattern's NPI (1023175635) is active in the NPPES registry as of the last update on 2016-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.