MATTHEW S ELLMAN MD
NPI 1215919642
Internal Medicine in New Haven, CT
About Matthew S Ellman Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MATTHEW S ELLMAN MD (NPI 1215919642) is an individual internal medicine provider in New Haven, Connecticut, licensed in Connecticut (031869) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (1987).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Matthew S Ellman 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 Reassignment
Medicare enrollment records show Matthew Ellman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New Haven, CT 06519
- Reassigned Medicare billing, Connecticut enrollment
- 3,728 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 8
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 06519 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.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 HAVEN, CT 06519
NEW HAVEN, CT 06519
NEW HAVEN, CT 06519
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 Matthew Ellman's NPI number?
The NPI number for Matthew Ellman is 1215919642. It was assigned to this individual provider in the NPPES registry on November 21, 2005.
Where is Matthew Ellman located?
Matthew Ellman practices at 800 Howard Ave Ypb, 3rd Floor, New Haven, CT 06519. The listed phone number is (203) 785-7411.
What is Matthew Ellman's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Matthew Ellman enrolled in Medicare?
Yes. Matthew Ellman 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 organization bills Medicare for Matthew Ellman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Ellman reassigns Medicare benefits to Yale University (New Haven, CT). The 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 Matthew Ellman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Matthew Ellman accept?
Health plans from Anthem Blue Cross and Blue Shield list Matthew Ellman 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.
When was this NPI record last updated?
The NPPES record for Matthew Ellman was last updated on January 13, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Matthew S Ellman, MD · NPI 1215919642
Internal Medicine physician in New Haven, Connecticut. Individual provider, active in the CMS NPPES registry since November 21, 2005.
## Identity
- **NPI:** 1215919642 (Entity type: Individual)
- **Enumerated:** November 21, 2005
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 031869 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 800 HOWARD AVE, YPB, 3RD FLOOR, New Haven, CT 06519-1369
- **Phone:** (203) 785-7411 · **Fax:** (203) 785-4194
## 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:** Yale University (NPI 1124148887, New Haven, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 1987
## Record status
- **NPPES last updated:** January 13, 2011
- **Other identifiers:** Medicare ID-Type Unspecified 110007647 (CT); Medicaid 001318692 (CT); Medicare UPIN F39210
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Source: [NPI Profile](https://npiprofile.com/npi/1215919642) · Data from the CMS NPPES public registry.