Mathew Greenston, MD
NPI 1558464370 · Emergency Medicine Physician · Manchester, NH
Mathew Greenston, MD is a Emergency Medicine Physician provider in Manchester, NH (NPI 1558464370).
Provider details
- NPI number
- 1558464370
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 11246 (NH)
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
- 2006-09-07
- Last updated
- 2010-10-27
Frequently asked questions
- What is Mathew Greenston's NPI number?
- Mathew Greenston's National Provider Identifier (NPI) is 1558464370, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mathew Greenston's specialty?
- Mathew Greenston is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mathew Greenston located?
- Mathew Greenston's practice location on file with NPPES is 100 Mcgregor St, Manchester, NH 03102-3730.
- What is Mathew Greenston's phone number?
- The practice phone number listed in the NPPES registry for Mathew Greenston is (603) 663-6478.
- Is Mathew Greenston's NPI active?
- Yes — Mathew Greenston's NPI (1558464370) is active in the NPPES registry as of the last update on 2010-10-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.