HHC ONE MEDICAL, LLC
NPI 1639881956
Internal Medicine in Darien, CT
About Hhc One Medical, Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HHC ONE MEDICAL, LLC (NPI 1639881956) is a healthcare organization registered as an internal medicine in Darien, Connecticut and active in the NPI registry since December 2022. The organization lists Mark Vye, Vice President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Group Practice 2
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Hhc One Medical, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
9Medicare enrollment records show 9 clinicians reassign Medicare billing to Hhc One Medical, LLC, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 5 within 10 miles. They are listed nearest first.
Clinicians, nearest first (9)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Hhc One Medical, LLC's NPI number?
The NPI number for Hhc One Medical, LLC is 1639881956. It was assigned to this organization in the NPPES registry on December 19, 2022.
Where is Hhc One Medical, LLC located?
Hhc One Medical, LLC is located at 104 Heights Rd Ste R103, Darien, CT 06820. The listed phone number is (888) 663-6331.
What is Hhc One Medical, LLC's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Hhc One Medical, LLC enrolled in Medicare?
Yes. Hhc One Medical, LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Hhc One Medical, LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 9 clinicians in 3 Medicare specialties reassign their Medicare billing to Hhc One Medical, LLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Family Practice (6), Nurse Practitioner (2) and Internal Medicine (1). Of these, 2 practice at this address and 5 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Hhc One Medical, LLC was last updated on May 17, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Hhc One Medical, Llc · NPI 1639881956
Internal Medicine organization in Darien, Connecticut. Organization record, active in the CMS NPPES registry since December 19, 2022.
## Identity
- **NPI:** 1639881956 (Entity type: Organization)
- **Enumerated:** December 19, 2022
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Mark Vye, VICE PRESIDENT
## Practice location
- **Address:** 104 HEIGHTS RD STE R103, Darien, CT 06820-4119
- **Phone:** (888) 663-6331
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 9 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Family Practice (6), Nurse Practitioner (2), Internal Medicine (1); 2 practice at this address and 5 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 17, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1639881956) · Data from the CMS NPPES public registry.