DAVID AUGUSTUS FIELLIN MD
NPI 1194700666
Internal Medicine in New Haven, CT
About David Augustus Fiellin Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAVID AUGUSTUS FIELLIN MD (NPI 1194700666) is an individual internal medicine provider in New Haven, Connecticut, licensed in Connecticut (033601) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of Emory University School Of Medicine (1991).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
David Augustus Fiellin 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 David Fiellin reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New Haven, CT 06519
- Reassigned Medicare billing, Connecticut enrollment
- 3,728 clinicians in this Medicare group
New Haven, CT 06519
- Reassigned Medicare billing, Connecticut enrollment
- 468 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 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.
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
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 David Fiellin's NPI number?
The NPI number for David Fiellin is 1194700666. It was assigned to this individual provider in the NPPES registry on December 7, 2005.
Where is David Fiellin located?
David Fiellin practices at 789 Howard Ave Ynhh, New Haven, CT 06519. The listed phone number is (203) 688-2471.
What is David Fiellin's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is David Fiellin enrolled in Medicare?
Yes. David Fiellin 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 David Fiellin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Fiellin reassigns Medicare benefits to 2 organizations: Yale University (New Haven, CT) and Cornell Scott Hill Health Corporation (New Haven, 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 Fiellin'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 Fiellin was last updated on February 6, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# David Augustus Fiellin, MD · NPI 1194700666
Internal Medicine physician in New Haven, Connecticut. Individual provider, active in the CMS NPPES registry since December 7, 2005.
## Identity
- **NPI:** 1194700666 (Entity type: Individual)
- **Enumerated:** December 7, 2005
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 033601 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 789 HOWARD AVE, YNHH, New Haven, CT 06519-1304
- **Phone:** (203) 688-2471 · **Fax:** (203) 688-4516
## 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): Yale University (NPI 1124148887, New Haven, CT); Cornell Scott Hill Health Corporation (NPI 1902921380, New Haven, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Emory University School Of Medicine, class of 1991
## Record status
- **NPPES last updated:** February 6, 2013
- **Other identifiers:** Medicaid 001336016 (CT); Medicare PIN 110005321 (CT); Medicare UPIN F81088
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Source: [NPI Profile](https://npiprofile.com/npi/1194700666) · Data from the CMS NPPES public registry.