JOHN EWING, MD
Addiction Medicine (Psychiatry & Neurology) Physician in WASHINGTON DEPOT, Connecticut. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
JOHN EWING, MD filed 127 Medicare Part D claims in 2023 as a Addiction Medicine (Psychiatry & Neurology) Physician in WASHINGTON DEPOT, Connecticut, prescribing 83% generic.
- 127
- Part D claims, 2023
- 83%
- generic prescribing
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.
JOHN EWING, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
127 35th percentile higher than 35% 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
JOHN EWING, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about JOHN EWING, MD?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Connecticut
How Addiction Medicine (Psychiatry & Neurology) Physician compares to other specialties among Connecticut providers
Addiction Medicine (Psychiatry & Neurology) Physician share within Connecticut
Addiction Medicine (Psychiatry & Neurology) Physician is one of the more visible NUCC categories in Connecticut
Each bar reflects the share of in-state providers whose primary NUCC taxonomy matches the specialty. Long tail of ~690 NUCC codes folded into "Other" to keep the comparison legible.
Specialty board-certification context
Estimated specialty board-certified rate — Addiction Medicine (Psychiatry & Neurology) Physician (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Addiction Medicine (Psychiatry & Neurology) Physician ABMS/AOA estimate
Est. board-certified rate (Addiction Medicine (Psychiatry & Neurology) Physician) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Addiction Medicine (Psychiatry & Neurology) Physician US NPIs
Specialty board-certified rate — Addiction Medicine (Psychiatry & Neurology) Physician estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
JOHN EWING, MD appears in the CMS NPPES registry as a Addiction Medicine (Psychiatry & Neurology) Physician provider holding MD credentials at 8 TITUS RD, WASHINGTON DEPOT, CT, 06794, with a listed phone of (860) 868-1155. NPI 1316008360 was issued on 12/13/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what EWING 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 127 prescription claims written by this provider, covering 13 Medicare beneficiaries and totaling roughly $18K in drug spend, split 17% brand-name and 83% 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.
Addiction Medicine (Psychiatry & Neurology) Physician is a narrow specialty nationwide, with 658 enrolled providers across 49 states and an average of 1,019 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 | 1316008360 |
|---|---|
| Specialty | Addiction Medicine (Psychiatry & Neurology) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 12/13/2006 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm JOHN EWING, MD's current license status, disciplinary history, and board certifications with the Connecticut Department of Public Health in Connecticut before relying on this page for a clinical or care decision.
How we sourced this profile
Brand vs generic prescribing mix · Typical
17% brand-name claims vs 83% generic, on 127 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.
Prescribing Breakdown
- 30-Day Fills
- 240
- Total Day Supply
- 7,100
- Brand vs Generic
- 17% brand / 83% generic
- Brand Drug Cost
- $9K
- Generic Drug Cost
- $8K
Patient Demographics
- Average Patient Age
- 62.5 years
- Avg HCC Risk Score
- 0.99
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What JOHN EWING, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Sertraline Hcl
Sertraline Hcl
12 claims
- Concerta
Concerta
11 claims
- Vilazodone Hcl
Vilazodone Hcl
11 claims
| Drug | Claims |
|---|---|
| Sertraline Hcl | 12 |
| Concerta Methylphenidate Hcl | 11 |
| Vilazodone Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Addiction Medicine (Psychiatry & Neurology) Physician Overview
How JOHN EWING, MD fits within the Addiction Medicine (Psychiatry & Neurology) Physician landscape nationally.
JOHN EWING, MD's 127 claims are below the specialty average of 1,019.
Nearby Addiction Medicine (Psychiatry & Neurology) Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as EWING.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
Explore Connecticut
Frequently Asked Questions
What is JOHN EWING, MD's specialty? ▼
How much does JOHN EWING, MD prescribe under Medicare Part D? ▼
Where is JOHN EWING, MD located? ▼
What is JOHN EWING, MD's NPI number? ▼
Does JOHN EWING, MD prescribe more brand-name or generic drugs? ▼
How many Addiction Medicine (Psychiatry & Neurology) Physician providers are there in the US? ▼
What drugs does JOHN EWING, MD prescribe most often? ▼
Does JOHN EWING, MD accept Medicare? ▼
How can I verify JOHN EWING, MD's credentials? ▼
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.
- 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