NPI registry status
Active
2026 NPPES data Otolaryngology Physician NPI 1336340009 M.D.
Verify on CMS → Ronald Walker, M.D.
Otolaryngology Physician in New Haven, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,893 in Otolaryngology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
89
Medicare Part D claims · 36 beneficiaries · Otolaryngology Physician avg: 509
MIPS score
81.6/100
▼ 2 pts below national avg 83.1 · Above neutral
Industry payments
$24.44
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Ronald Walker, M.D. reported a CMS MIPS final score of 81.6/100 - below the 83.1 national average - and filed 89 Medicare Part D claims in 2023.
- 81.6/100
- MIPS score · -2 vs avg
- 89
- Part D claims, 2023
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Ronald Walker, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
82 36th percentile higher than 36% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Ronald Walker, M.D. sits
This provider among otolaryngology physician peers
Across the 3,669 otolaryngology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Ronald Walker, M.D. writes more Part D claims than 14% of them and scores higher on MIPS quality than 47% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one otolaryngology physician peer from a representative sample of 60; the gold marker is Ronald Walker, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Ronald Walker, 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).
What does the federal data show about Ronald Walker, M.D.?
Near national averagePrimary specialty
Otolaryngology Physician
Medicare Part D claims
89 83% vs specialty avg
MIPS final score
81.6/100 1.5 pts vs avg
Specialty distribution in Connecticut
How Otolaryngology Physician compares to other specialties among Connecticut providers
Medicare quality performance, MIPS
Ronald Walker, M.D.'s 2023 MIPS final score plotted against the Otolaryngology Physician national average
- MIPS Final Score
- 81.6/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Otolaryngology Physician) - 81.6/100 vs national avg 83.1
How MIPS and board certification work
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).
Ronald Walker, M.D. appears in the CMS NPPES registry as a Otolaryngology Physician provider holding M.D. credentials at 20 YORK ST, New Haven, CT, 06510, with a listed phone of (203) 785-5430. NPI 1336340009 was issued on 05/30/2007.
Medicare Part D records for calendar year 2023 show 89 prescription claims written by this provider, covering 36 Medicare beneficiaries and totaling roughly $1K in drug spend, with an opioid prescribing rate of 39.3%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 81.6/100 for the 2023 performance year (Quality 76.1, Cost 54.3), compared with the national average of 83.1.
Otolaryngology Physician is a mid-sized specialty nationwide, with 10,893 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
Provider Details
| NPI | 1336340009 |
|---|---|
| Specialty | Otolaryngology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/30/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
81.5711
Final Score
Avg: 83.1
76.0913
Quality
54.2831
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Ronald Walker, 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.
Ssm Health Care Group
Saint Louis, MO
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 Ronald Walker, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$24
Largest payer
Ethicon US, LLC
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
89
Total Claims
$1K
Total Drug Cost
36
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 93
- Total Day Supply
- 1,381
- Generic Drug Cost
- $1K
- Opioid Claims
- 35 (39.3% rate)
- Antibiotic Claims
- 22
Patient Demographics
- Average Patient Age
- 70.7 years
- Avg HCC Risk Score
- 2.27
- Gender Split
- 36% female / 64% 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 |
|---|---|
| Oxycodone Hcl | 31 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 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 Ronald Walker, M.D. fits within the Otolaryngology Physician landscape nationally.
10,893
Otolaryngology Physician Providers in US
54
States with Otolaryngology Physician
509
Avg Claims per Provider
Ronald Walker, M.D.'s 89 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 Walker.
Dr. Paul Alberti
M.D.
North Haven, CT
Dr. Erin Alday
MD
Farmington, CT
Ali Alkabasi
Farmington, CT
Dr. Abdel Allam
M.D.
Bristol, CT
Dr. David Astrachan
MD
Hamden, CT
Compare Otolaryngology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Connecticut medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Otolaryngology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Ronald Walker, M.D.'s specialty? ▼
Ronald Walker, M.D. specializes in Otolaryngology Physician and practices in New Haven, Connecticut. Credentials: M.D..
How much does Ronald Walker, M.D. prescribe under Medicare Part D? ▼
In 2023, Ronald Walker, M.D. wrote 89 Medicare Part D claims totaling $1K in drug costs for 36 beneficiaries.
What is Ronald Walker, M.D.'s Medicare quality score? ▼
Ronald Walker, M.D. has a CMS MIPS Final Score of 81.6/100 (Quality: 76.1, Cost: 54.3). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Ronald Walker, M.D. located? ▼
Ronald Walker, M.D. is located at 20 YORK ST, New Haven, CT, 06510. Phone: (203) 785-5430.
What is Ronald Walker, M.D.'s NPI number? ▼
Ronald Walker, M.D.'s National Provider Identifier (NPI) is 1336340009, issued on 05/30/2007.
Does Ronald Walker, M.D. prescribe opioids? ▼
Yes, Ronald Walker, M.D. had 35 opioid claims in 2023 with an opioid prescribing rate of 39.3%.
How many Otolaryngology Physician providers are there in the US? ▼
There are 10,893 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 Ronald Walker, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Ronald Walker, M.D.'s most frequently prescribed drugs include Oxycodone Hcl, Amoxicillin-Clavulanate Potass. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ronald Walker, M.D. accept Medicare? ▼
Ronald Walker, M.D. appears in CMS Medicare data with 89 Part D claims and 36 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ronald Walker, M.D.'s credentials? ▼
Ronald Walker, M.D.'s NPI is 1336340009 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
View source datasets and methodology notes
- 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
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.