Gregory S. Bonaiuto, M.D.
Otolaryngology Physician · Hartford, CT
Gregory S. Bonaiuto, M.D. is an otolaryngology physician with a practice address in Hartford, Connecticut, and NPI 1598751372, issued on Sep 27, 2005. Check the license (Connecticut 035778, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gregory S. Bonaiuto
- Credential
- M.D.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- 035778 CT
Self-reported in NPPES; status is on the state search - Practice location
- 85 Seymour St, Hartford, CT 06106
- Phone
- (860) 493-1950
- Enumerated
- Sep 27, 2005
- Record last updated
- May 23, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (860) 493-1961
- Medicare enrollment
- Enrolled (PECOS I20040909000783); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 146 in Connecticut → Look up another NPI →
Also registered at 85 Seymour St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory S. Bonaiuto in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 035778Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average otolaryngology physician in 2024
395 Medicare Part D claims for 187 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Fluticasone Propionate83 claims
- Prednisone45 claims
- Ipratropium Bromide39 claims
- Azithromycin31 claims
- Montelukast Sodium23 claims
- Ofloxacin22 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 73.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $88.16
2 payments; by number, the most common kind was food and beverage; the largest payer was Inspire Medical Systems, Inc. The 6,429 providers of this specialty with any payment received $1,922.50 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Connecticut Ear, Nose And Throat Associates, P.C.Wethersfield, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory S. Bonaiuto among 146 otolaryngology physician records in Connecticut
Gregory S. Bonaiuto, M.D. is one of 146 otolaryngology physician records with a practice address in Connecticut. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 81% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1992 · median 2002 among the 103 with a school on file
- Record last updated2011 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Connecticut
There are 146 otolaryngology physician records in Connecticut.
All 146 in Connecticut → Every provider in Hartford → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Nancy Grover, MDHartford, CT 061061679984314
- Clinton Kuwada, M.D.Hartford, CT 061061255524328
- Nicole Murray-Posner, MDHartford, CT 061061720054174
- Richard Newman, M.D.Hartford, CT 061061740276427
- Todd Zachs, M.D.Hartford, CT 061051417928607
- Jeffrey Marino, M.D.Wethersfield, CT 061091295962868
- Kelly McKenna, MDWethersfield, CT 061091073190120
- Carl Moeller, M.D.Wethersfield, CT 061091124281464
Common questions
What is Gregory S. Bonaiuto, M.D.'s NPI number?
Gregory S. Bonaiuto, M.D.'s National Provider Identifier (NPI) is 1598751372, issued on Sep 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gregory S. Bonaiuto, M.D. located?
The NPPES record lists a practice address at 85 Seymour St, Hartford, CT, 06106. Phone: (860) 493-1950. Providers update this record themselves, so call before visiting.
How can I verify Gregory S. Bonaiuto, M.D.'s license?
NPPES lists Connecticut license number 035778, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory S. Bonaiuto, M.D. prescribe under Medicare Part D?
In 2024, Gregory S. Bonaiuto, M.D. had 395 Medicare Part D claims for 187 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
What is Gregory S. Bonaiuto, M.D.'s MIPS final score?
The 2023 MIPS final score is 73.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.