OrganizationActive
Mc Zaslow LLC
NPI 1619586427 · Internal Medicine Physician · Winchester, MA
Mc Zaslow LLC is a Internal Medicine Physician organization in Winchester, MA (NPI 1619586427).
Provider details
- NPI number
- 1619586427
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Michael Zaslow, Owner/Physican(781) 729-8070
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(64/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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
955 Main St Ste 302
Winchester, MA 01890-4303
Phone: (781) 729-8070
Fax: (781) 721-0338
Street-level locationGet directions
Mailing address
955 Main St Ste 302
Winchester, MA 01890-4303
Other names (DBA / former)
- Doing business as
- Michael C Zaslow MD
- Doing business as
- Michael C. Zaslow, M.D PC
Registry dates
- Enumerated
- 2020-07-28
- Last updated
- 2020-07-28
- Certified
- 2020-07-28
Frequently asked questions
- What is Mc Zaslow LLC's NPI number?
- Mc Zaslow LLC's National Provider Identifier (NPI) is 1619586427, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mc Zaslow LLC?
- Mc Zaslow LLC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mc Zaslow LLC located?
- Mc Zaslow LLC's practice location on file with NPPES is 955 Main St Ste 302, Winchester, MA 01890-4303.
- What is Mc Zaslow LLC's phone number?
- The practice phone number listed in the NPPES registry for Mc Zaslow LLC is (781) 729-8070.
- Who is the authorized official for Mc Zaslow LLC?
- The authorized official listed on Mc Zaslow LLC's NPPES record is Michael Zaslow, Owner/Physican. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mc Zaslow LLC's NPI active?
- Yes — Mc Zaslow LLC's NPI (1619586427) is active in the NPPES registry as of the last update on 2020-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.