Gregory Weisz, M.D.
NPI 1659392082 · Emergency Medicine Physician · Winchester, MA
Gregory Weisz, M.D. is a Emergency Medicine Physician provider in Winchester, MA (NPI 1659392082).
Provider details
- NPI number
- 1659392082
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 46118 (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
- 2006-07-21
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregory Weisz's NPI number?
- Gregory Weisz's National Provider Identifier (NPI) is 1659392082, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Weisz's specialty?
- Gregory Weisz is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Weisz located?
- Gregory Weisz's practice location on file with NPPES is 41 Highland Ave, Winchester, MA 01890-1446.
- What is Gregory Weisz's phone number?
- The practice phone number listed in the NPPES registry for Gregory Weisz is (781) 729-2000.
- Is Gregory Weisz's NPI active?
- Yes — Gregory Weisz's NPI (1659392082) 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.