BENJAMIN D ARMSTRONG MD
NPI 1346487220
Emergency Medicine in New London, CT
About Benjamin D Armstrong Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BENJAMIN D ARMSTRONG MD (NPI 1346487220) is an individual emergency medicine provider in New London, Connecticut, licensed in Connecticut (047167) and active in the NPI registry since January 2009. He is enrolled in Medicare PECOS and is a graduate of University Of Connecticut School Of Medicine (2006).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Benjamin D Armstrong Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Benjamin Armstrong reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New London, CT 06320
- Reassigned Medicare billing, Connecticut enrollment
- 65 clinicians in this Medicare group
Bristol, CT 06010
- Reassigned Medicare billing, Connecticut enrollment
- 44 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.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06320 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
NEW LONDON, CT 06320
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 Benjamin Armstrong's NPI number?
The NPI number for Benjamin Armstrong is 1346487220. It was assigned to this individual provider in the NPPES registry on January 14, 2009.
Where is Benjamin Armstrong located?
Benjamin Armstrong practices at 365 Montauk Ave, New London, CT 06320. The listed phone number is (860) 271-4326.
What is Benjamin Armstrong's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Benjamin Armstrong enrolled in Medicare?
Yes. Benjamin Armstrong is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Benjamin Armstrong's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Benjamin Armstrong reassigns Medicare benefits to 2 organizations: Lawrence And Memorial Hospital, Inc. (New London, CT) and Usacs Of Connecticut, LLC (Bristol, 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 Benjamin Armstrong'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 Benjamin Armstrong was last updated on January 14, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Benjamin D Armstrong, MD · NPI 1346487220
Emergency Medicine physician in New London, Connecticut. Individual provider, active in the CMS NPPES registry since January 14, 2009.
## Identity
- **NPI:** 1346487220 (Entity type: Individual)
- **Enumerated:** January 14, 2009
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 047167 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 365 MONTAUK AVE, New London, CT 06320-4700
- **Phone:** (860) 271-4326
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **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): Lawrence And Memorial Hospital, Inc. (NPI 1073530879, New London, CT); Usacs Of Connecticut, LLC (NPI 1285713099, Bristol, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Connecticut School Of Medicine, class of 2006
## Record status
- **NPPES last updated:** January 14, 2009
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Source: [NPI Profile](https://npiprofile.com/npi/1346487220) · Data from the CMS NPPES public registry.