OrganizationActive
M.w.d., Inc
NPI 1639201569 · Internal Medicine Physician · Riverhead, NY
M.w.d., Inc is a Internal Medicine Physician organization in Riverhead, NY (NPI 1639201569).
Provider details
- NPI number
- 1639201569
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Michael Dempsey, Owner(631) 727-1818
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
1190 Old Country Rd
Riverhead, NY 11901-4450
Phone: (631) 727-1818
Fax: (631) 727-7365
Street-level locationGet directions
Mailing address
1190 Old Country Rd
Riverhead, NY 11901-4450
Registry dates
- Enumerated
- 2007-03-09
- Last updated
- 2011-12-28
Frequently asked questions
- What is M.w.d., Inc's NPI number?
- M.w.d., Inc's National Provider Identifier (NPI) is 1639201569, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is M.w.d., Inc?
- M.w.d., Inc is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is M.w.d., Inc located?
- M.w.d., Inc's practice location on file with NPPES is 1190 Old Country Rd, Riverhead, NY 11901-4450.
- What is M.w.d., Inc's phone number?
- The practice phone number listed in the NPPES registry for M.w.d., Inc is (631) 727-1818.
- Who is the authorized official for M.w.d., Inc?
- The authorized official listed on M.w.d., Inc's NPPES record is Michael Dempsey, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is M.w.d., Inc's NPI active?
- Yes — M.w.d., Inc's NPI (1639201569) is active in the NPPES registry as of the last update on 2011-12-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.