Ian D Kleinhen MD PLLC
NPI 1669939369 · Internal Medicine Physician · Windsor, CT
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ian D Kleinhen MD PLLC is a Internal Medicine Physician organization in Windsor, CT (NPI 1669939369).
Provider details
- NPI number
- 1669939369
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Ian Kleinhen, Physician / Owner(860) 580-7071
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
7 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
- 2019-02-28
- Last updated
- 2019-03-12
Frequently asked questions
- What is Ian D Kleinhen MD PLLC's NPI number?
- Ian D Kleinhen MD PLLC's National Provider Identifier (NPI) is 1669939369, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Ian D Kleinhen MD PLLC?
- Ian D Kleinhen MD PLLC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ian D Kleinhen MD PLLC located?
- Ian D Kleinhen MD PLLC's practice location on file with NPPES is 74 Mack St Ste 1, Windsor, CT 06095-2759.
- What is Ian D Kleinhen MD PLLC's phone number?
- The practice phone number listed in the NPPES registry for Ian D Kleinhen MD PLLC is (860) 580-7071.
- Does Ian D Kleinhen MD PLLC accept Medicare?
- Ian D Kleinhen MD PLLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Ian D Kleinhen MD PLLC?
- The authorized official listed on Ian D Kleinhen MD PLLC's NPPES record is Ian Kleinhen, Physician / Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Ian D Kleinhen MD PLLC's NPI active?
- Yes — Ian D Kleinhen MD PLLC's NPI (1669939369) is active in the NPPES registry as of the last update on 2019-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.