Old Greenwich Medical Group LLC
NPI 1730932880 · Internal Medicine Physician · Old Greenwich, CT
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Old Greenwich Medical Group LLC is a Internal Medicine Physician organization in Old Greenwich, CT (NPI 1730932880).
Provider details
- NPI number
- 1730932880
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Karyna Estrella, Pracice Manager(203) 637-5400
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
2 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
- 2024-04-09
- Last updated
- 2024-05-07
- Certified
- 2024-05-07
Frequently asked questions
- What is Old Greenwich Medical Group LLC's NPI number?
- Old Greenwich Medical Group LLC's National Provider Identifier (NPI) is 1730932880, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Old Greenwich Medical Group LLC?
- Old Greenwich Medical Group LLC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Old Greenwich Medical Group LLC located?
- Old Greenwich Medical Group LLC's practice location on file with NPPES is 8 W End Ave, Old Greenwich, CT 06870-1642.
- What is Old Greenwich Medical Group LLC's phone number?
- The practice phone number listed in the NPPES registry for Old Greenwich Medical Group LLC is (203) 637-5400.
- Does Old Greenwich Medical Group LLC accept Medicare?
- Old Greenwich Medical Group LLC 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 Old Greenwich Medical Group LLC?
- The authorized official listed on Old Greenwich Medical Group LLC's NPPES record is Karyna Estrella, Pracice Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Old Greenwich Medical Group LLC's NPI active?
- Yes — Old Greenwich Medical Group LLC's NPI (1730932880) is active in the NPPES registry as of the last update on 2024-05-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.