NPI registry status
Active
2026 NPPES data Specialist NPI 1649332909 MD.
Verify on CMS → Raymond Chagnon, MD.
Specialist in Hartford, 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 69,608 in Specialist, 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
19
Medicare Part D claims · Specialist avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Raymond Chagnon, MD. filed 19 Medicare Part D claims in 2023 as a Specialist in Hartford, Connecticut.
- 19
- Part D claims, 2023
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.
Raymond Chagnon, MD.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
19 0th percentile higher than 0% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Raymond Chagnon, MD.?
Quality data not reportedPrimary specialty
Specialist
Medicare Part D claims
19 99% vs specialty avg
Specialty distribution in Connecticut
How Specialist compares to other specialties among Connecticut providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Specialist. Verify directly:
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).
Raymond Chagnon, MD. appears in the CMS NPPES registry as a Specialist provider holding MD. credentials at 490 BLUE HILLS AVE, Hartford, CT, 06112, with a listed phone of (860) 714-2647. NPI 1649332909 was issued on 12/14/2006.
Medicare Part D records for calendar year 2023 show 19 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $645 in drug spend.
Specialist is a high-volume specialty nationwide, with 69,608 enrolled providers across 55 states and an average of 1,474 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 | 1649332909 |
|---|---|
| Specialty | Specialist |
| Credentials | MD. |
| Gender | Male |
| NPI Issued | 12/14/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
19
Total Claims
$645
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 31
- Total Day Supply
- 910
- Generic Drug Cost
- $631
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 1.35
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Venlafaxine Hcl Er Venlafaxine Hcl | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Raymond Chagnon, MD. fits within the Specialist landscape nationally.
69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Raymond Chagnon, MD.'s 19 claims are below the specialty average of 1,474.
Nearby Specialist Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Chagnon.
Dr. Jay Abbott
M.D.
Litchfield, CT
Dr. Karen Abrams
M.D.
Westport, CT
Dr. Micheal Acocella
B.S., P.T.
Greenwich, CT
Dr. Diana Adams
M.D.
Greenwich, CT
Dr. Zosimo Adefuin
MD
Bridgeport, CT
Compare Specialist 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 Specialist 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Connecticut
Frequently Asked Questions
What is Raymond Chagnon, MD.'s specialty? ▼
Raymond Chagnon, MD. specializes in Specialist and practices in Hartford, Connecticut. Credentials: MD..
How much does Raymond Chagnon, MD. prescribe under Medicare Part D? ▼
In 2023, Raymond Chagnon, MD. wrote 19 Medicare Part D claims totaling $645 in drug costs for N/A beneficiaries.
Where is Raymond Chagnon, MD. located? ▼
Raymond Chagnon, MD. is located at 490 BLUE HILLS AVE, Hartford, CT, 06112. Phone: (860) 714-2647.
What is Raymond Chagnon, MD.'s NPI number? ▼
Raymond Chagnon, MD.'s National Provider Identifier (NPI) is 1649332909, issued on 12/14/2006.
How many Specialist providers are there in the US? ▼
There are 69,608 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Raymond Chagnon, MD. prescribe most often? ▼
Based on 2023 Medicare Part D data, Raymond Chagnon, MD.'s most frequently prescribed drugs include Venlafaxine Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Raymond Chagnon, MD. accept Medicare? ▼
Raymond Chagnon, MD. appears in CMS Medicare data with 19 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Raymond Chagnon, MD.'s credentials? ▼
Raymond Chagnon, MD.'s NPI is 1649332909 with credentials MD.. 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.
- 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.