IndividualActive
Ellen Markstein, MD
NPI 1659390797 · Dermatology Physician · Clinton, CT
Ellen Markstein, MD is a Dermatology Physician provider in Clinton, CT (NPI 1659390797).
Provider details
- NPI number
- 1659390797
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- CT034247 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
8 East Main Street
Suite 101
Clinton, CT 06413-2058
Phone: (860) 669-6156
Fax: (860) 664-0285
Street-level locationGet directions
Mailing address
8 East Main Street
Clinton, CT 06413-2058
Registry dates
- Enumerated
- 2006-07-19
- Last updated
- 2010-06-28
Frequently asked questions
- What is Ellen Markstein's NPI number?
- Ellen Markstein's National Provider Identifier (NPI) is 1659390797, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Markstein's specialty?
- Ellen Markstein is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Ellen Markstein located?
- Ellen Markstein's practice location on file with NPPES is 8 East Main Street, Clinton, CT 06413-2058.
- What is Ellen Markstein's phone number?
- The practice phone number listed in the NPPES registry for Ellen Markstein is (860) 669-6156.
- Is Ellen Markstein's NPI active?
- Yes — Ellen Markstein's NPI (1659390797) is active in the NPPES registry as of the last update on 2010-06-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.