2026 NPPES data Otolaryngology Physician NPI 1598751372 M.D.
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GREGORY BONAIUTO, M.D.

Otolaryngology Physician in HARTFORD, Connecticut. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
370
Medicare Part D claims · 171 beneficiaries · Otolaryngology Physician avg: 509
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.2408/100
▼ 10 pts below national avg 83.1 · [object Object]
Industry payments
$88.16
2 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: GREGORY BONAIUTO, M.D. is a Otolaryngology Physician ([object Object]) practicing in HARTFORD, Connecticut with a Medicare Part D prescribing footprint of 370 claims across 171 beneficiaries — 11% brand-name prescribing . Their CMS MIPS Final Score of 73.2408/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $88.16 across 2 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: GREGORY BONAIUTO, M.D. reported a CMS MIPS final score of 73.2408 out of 100, below the 83.1 national average, and filed 370 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

GREGORY BONAIUTO, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

GREGORY BONAIUTO, M.D. at a glance

Below national average

NPI registry status

Active

Issued 09/27/2005

NPI 1598751372

Primary specialty

Otolaryngology Physician

Mid-sized

10,895 US NPIs in this specialty

Medicare Part D claims

370 27% vs specialty avg

2023 prescription claims

Specialty avg: 509

MIPS final score

73.2408/100 9.859200000000001% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in Connecticut

How Otolaryngology Physician compares to other specialties among Connecticut providers

Connecticut providers

Otolaryngology Physician share within Connecticut

1. Otolaryngology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Otolaryngology Physician share within Connecticut

Medicare quality performance — MIPS

GREGORY BONAIUTO, M.D.'s 2023 MIPS final score plotted against the Otolaryngology Physician national average

Below national average
MIPS Final Score
73.2408/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Otolaryngology Physician) — 73.2408/100 vs national avg 83.1

0%100%National avg83%73.2%
MIPS final score (Otolaryngology Physician) — 73.2408/100 vs national avg 83.1

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

GREGORY BONAIUTO, M.D. is a Otolaryngology Physician provider practicing in HARTFORD, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1598751372. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

GREGORY BONAIUTO, M.D. appears in the CMS NPPES registry as a Otolaryngology Physician provider holding M.D. credentials at 85 SEYMOUR ST, HARTFORD, CT, 06106, with a listed phone of (860) 493-1950. NPI 1598751372 was issued on 09/27/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BONAIUTO most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 370 prescription claims written by this provider, covering 171 Medicare beneficiaries and totaling roughly $99K in drug spend, split 11% brand-name and 89% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.2408/100 for the 2023 performance year (Quality 55.7397, Cost 92.563), compared with the national average of 83.1.

Otolaryngology Physician is a mid-sized specialty nationwide, with 10,895 enrolled providers across 54 states and an average of 509 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

85 SEYMOUR ST
HARTFORD, CT 06106

Provider Details

NPI 1598751372
Specialty Otolaryngology Physician
Credentials M.D.
Gender Male
NPI Issued 09/27/2005

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

73.2408
Final Score
Avg: 83.1
55.7397
Quality
92.563
Cost
55
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where GREGORY BONAIUTO, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

CONNECTICUT EAR, NOSE AND THROAT ASSOCIATES, P.C.
WETHERSFIELD, CT

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for GREGORY BONAIUTO, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$88

Largest payer

Inspire Medical Systems, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Typical

GREGORY BONAIUTO, M.D. — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 370 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

370
Total Claims
$99K
Total Drug Cost
171
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
501
Total Day Supply
10,989
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$91K
Generic Drug Cost
$8K
Antibiotic Claims
64

Patient Demographics

Average Patient Age
75.3 years
Avg HCC Risk Score
1.16
Gender Split
55% female / 45% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Fluticasone Propionate
54
Prednisone
42
Montelukast Sodium
32
Azithromycin
29
Ofloxacin
28
Ipratropium Bromide
24
Omeprazole
20
Dupixent Syringe
Dupilumab
13

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Otolaryngology Physician Overview

How GREGORY BONAIUTO, M.D. fits within the Otolaryngology Physician landscape nationally.

10,895
Otolaryngology Physician Providers in US
54
States with Otolaryngology Physician
509
Avg Claims per Provider

GREGORY BONAIUTO, M.D.'s 370 claims are below the specialty average of 509.

Nearby Otolaryngology Physician Providers in Connecticut

Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as BONAIUTO.

Compare Otolaryngology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GREGORY BONAIUTO, M.D.'s specialty?
GREGORY BONAIUTO, M.D. specializes in Otolaryngology Physician and practices in HARTFORD, Connecticut. Credentials: M.D..
How much does GREGORY BONAIUTO, M.D. prescribe under Medicare Part D?
In 2023, GREGORY BONAIUTO, M.D. wrote 370 Medicare Part D claims totaling $99K in drug costs for 171 beneficiaries.
What is GREGORY BONAIUTO, M.D.'s Medicare quality score?
GREGORY BONAIUTO, M.D. has a CMS MIPS Final Score of 73.2408/100 (Quality: 55.7397, Cost: 92.563). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is GREGORY BONAIUTO, M.D. located?
GREGORY BONAIUTO, M.D. is located at 85 SEYMOUR ST, HARTFORD, CT, 06106. Phone: (860) 493-1950.
What is GREGORY BONAIUTO, M.D.'s NPI number?
GREGORY BONAIUTO, M.D.'s National Provider Identifier (NPI) is 1598751372, issued on 09/27/2005.
Does GREGORY BONAIUTO, M.D. prescribe more brand-name or generic drugs?
GREGORY BONAIUTO, M.D.'s prescribing is 11% brand-name and 89% generic drugs by claim count, with $91K in brand drug costs.
How many Otolaryngology Physician providers are there in the US?
There are 10,895 Otolaryngology Physician providers across 54 states in the US. The average Otolaryngology Physician provider writes 509 Medicare Part D claims per year.
What drugs does GREGORY BONAIUTO, M.D. prescribe most often?
Based on 2023 Medicare Part D data, GREGORY BONAIUTO, M.D.'s most frequently prescribed drugs include Fluticasone Propionate, Prednisone, Montelukast Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GREGORY BONAIUTO, M.D. accept Medicare?
GREGORY BONAIUTO, M.D. appears in CMS Medicare data with 370 Part D claims and 171 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GREGORY BONAIUTO, M.D.'s credentials?
GREGORY BONAIUTO, M.D.'s NPI is 1598751372 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology