DR. DIANE ELIZABETH SINGER M.D.
NPI 1275554826
Ophthalmology in Great Barrington, MA
About Dr. Diane Elizabeth Singer M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DIANE ELIZABETH SINGER M.D. (NPI 1275554826) is an individual ophthalmology provider in Great Barrington, Massachusetts, licensed in Massachusetts (243111) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Berkshire Medical Center, and is a graduate of Other (1993).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Dr. Diane Elizabeth Singer M.d. 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 Diane Singer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Great Barrington, MA 01230
- Reassigned Medicare billing, Massachusetts enrollment
- 102 clinicians in this Medicare group
Pittsfield, MA 01201
- Reassigned Medicare billing, Massachusetts enrollment
- 12 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 12
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Berkshire Medical Center
Acute Care Hospitals · Pittsfield, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01230 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.
Reported Quality Measures
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Diane Singer's NPI number?
The NPI number for Diane Singer is 1275554826. It was assigned to this individual provider in the NPPES registry on July 21, 2006.
Where is Diane Singer located?
Diane Singer practices at 409 Stockbridge Rd, Great Barrington, MA 01230. The listed phone number is (413) 445-4564.
What is Diane Singer's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Diane Singer enrolled in Medicare?
Yes. Diane Singer 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 Diane Singer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diane Singer reassigns Medicare benefits to 2 organizations: Community Health Programs, Inc. (Great Barrington, MA) and Berkshire Eye Center PC (Pittsfield, MA). 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 Diane Singer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diane Singer accept?
Health plans from Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas and 2 other insurers list Diane Singer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Diane Singer affiliated with any hospitals?
According to CMS data, Diane Singer is affiliated with Berkshire Medical Center.
When was this NPI record last updated?
The NPPES record for Diane Singer was last updated on January 28, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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. Diane Elizabeth Singer, M.D. · NPI 1275554826
Ophthalmology physician in Great Barrington, Massachusetts. Individual provider, active in the CMS NPPES registry since July 21, 2006.
## Identity
- **NPI:** 1275554826 (Entity type: Individual)
- **Enumerated:** July 21, 2006
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** 243111 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 409 STOCKBRIDGE RD, Great Barrington, MA 01230-1233
- **Phone:** (413) 445-4564 · **Fax:** (413) 448-2727
## 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): Community Health Programs, Inc. (NPI 1013953009, Great Barrington, MA); Berkshire Eye Center PC (NPI 1992740302, Pittsfield, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1993
## Record status
- **NPPES last updated:** January 28, 2016
---
Source: [NPI Profile](https://npiprofile.com/npi/1275554826) · Data from the CMS NPPES public registry.