John Mattern, DO
NPI 1730184425 · Hematology & Oncology Physician · Newport News, VA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Mattern, DO is a Hematology & Oncology Physician provider in Newport News, VA (NPI 1730184425).
Provider details
- NPI number
- 1730184425
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 0102024256 (VA)
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
21 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
- 2005-06-17
- Last updated
- 2019-01-17
Frequently asked questions
- What is John Mattern's NPI number?
- John Mattern's National Provider Identifier (NPI) is 1730184425, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mattern's specialty?
- John Mattern is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is John Mattern located?
- John Mattern's practice location on file with NPPES is 1051 Loftis Blvd, Newport News, VA 23606-3069.
- What is John Mattern's phone number?
- The practice phone number listed in the NPPES registry for John Mattern is (757) 873-9400.
- Does John Mattern accept Medicare?
- John Mattern is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Mattern's NPI active?
- Yes — John Mattern's NPI (1730184425) is active in the NPPES registry as of the last update on 2019-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.