DR. DAVID M SACK MD
NPI 1710986898
Internal Medicine - Gastroenterology in Manchester, NH
About Dr. David M Sack Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DAVID M SACK MD (NPI 1710986898) is an individual gastroenterology provider in Manchester, New Hampshire, licensed in New Hampshire (EL10071) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS and maintains a secondary practice location in Meriden.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. David M Sack Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show David Sack reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Norwich, CT 06360
- Reassigned Medicare billing, Connecticut enrollment
- 166 clinicians in this Medicare group
Hartford, CT 06106
- Reassigned Medicare billing, Connecticut enrollment
- 417 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 03104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MANCHESTER, NH 03104
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 David Sack's NPI number?
The NPI number for David Sack is 1710986898. It was assigned to this individual provider in the NPPES registry on July 20, 2005.
Where is David Sack located?
David Sack practices at 100 Hitchcock Way, Manchester, NH 03104. The listed phone number is (603) 695-2500.
What is David Sack's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is David Sack enrolled in Medicare?
Yes. David Sack is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for David Sack's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Sack reassigns Medicare benefits to 2 organizations: United Community And Family Services, Inc. (Norwich, CT) and Connecticut Gi PLLC (Hartford, CT). Each 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 David Sack's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for David Sack was last updated on October 3, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. David M Sack, MD · NPI 1710986898
Gastroenterology physician in Manchester, New Hampshire. Individual provider, active in the CMS NPPES registry since July 20, 2005.
## Identity
- **NPI:** 1710986898 (Entity type: Individual)
- **Enumerated:** July 20, 2005
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** EL10071 (New Hampshire)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 HITCHCOCK WAY, Manchester, NH 03104-4125
- **Phone:** (603) 695-2500
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): United Community And Family Services, Inc. (NPI 1467482539, Norwich, CT); Connecticut Gi PLLC (NPI 1023124625, Hartford, CT) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 3, 2022
- **Other identifiers:** Medicaid 1273929 (CT)
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Source: [NPI Profile](https://npiprofile.com/npi/1710986898) · Data from the CMS NPPES public registry.