DR. GREGORY S. BONAIUTO M.D.
NPI 1598751372
Otolaryngology in Hartford, CT
About Dr. Gregory S. Bonaiuto M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GREGORY S. BONAIUTO M.D. (NPI 1598751372) is an individual otolaryngology provider in Hartford, Connecticut, licensed in Connecticut (035778) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS and is a graduate of University Of Connecticut School Of Medicine (1992).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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. Gregory S. Bonaiuto 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 Gregory Bonaiuto reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hartford, CT 06102
- Reassigned Medicare billing, Connecticut enrollment
- 1,333 clinicians in this Medicare group
Wethersfield, CT 06109
- Reassigned Medicare billing, Connecticut enrollment
- 21 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 7
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 06106 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
Referred Medical Equipment & Supplies CMS DME claims
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.
HARTFORD, CT 06106
HARTFORD, CT 06106
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 Gregory Bonaiuto's NPI number?
The NPI number for Gregory Bonaiuto is 1598751372. It was assigned to this individual provider in the NPPES registry on September 27, 2005.
Where is Gregory Bonaiuto located?
Gregory Bonaiuto practices at 85 Seymour St Suite 318, Hartford, CT 06106. The listed phone number is (860) 493-1950.
What is Gregory Bonaiuto's specialty?
The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.
Is Gregory Bonaiuto enrolled in Medicare?
Yes. Gregory Bonaiuto 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 Gregory Bonaiuto's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Bonaiuto reassigns Medicare benefits to 2 organizations: Hartford Hospital (Hartford, CT) and Connecticut Ear, Nose & Throat Associates, P.C. (Wethersfield, 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 Gregory Bonaiuto's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gregory Bonaiuto accept?
Health plans from Anthem Blue Cross and Blue Shield list Gregory Bonaiuto 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 Gregory Bonaiuto was last updated on May 23, 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.
# Dr. Gregory S. Bonaiuto, M.D. · NPI 1598751372
Otolaryngology physician in Hartford, Connecticut. Individual provider, active in the CMS NPPES registry since September 27, 2005.
## Identity
- **NPI:** 1598751372 (Entity type: Individual)
- **Enumerated:** September 27, 2005
- **Primary specialty:** Otolaryngology · taxonomy 207Y00000X
- **State license:** 035778 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 85 SEYMOUR ST, SUITE 318, Hartford, CT 06106-5501
- **Phone:** (860) 493-1950 · **Fax:** (860) 493-1961
## 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): Hartford Hospital (NPI 1770696643, Hartford, CT); Connecticut Ear, Nose & Throat Associates, P.C. (NPI 1528168705, Wethersfield, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Connecticut School Of Medicine, class of 1992
## Record status
- **NPPES last updated:** May 23, 2011
- **Other identifiers:** Medicare UPIN G43820 (CT)
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Source: [NPI Profile](https://npiprofile.com/npi/1598751372) · Data from the CMS NPPES public registry.