2026 NPPES data Addiction Medicine (Psychiatry & Neurology) Physician NPI 1316008360 MD
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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.

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
127
Medicare Part D claims · 13 beneficiaries · Addiction Medicine (Psychiatry & Neurology) Physician avg: 1K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs

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

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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

Board-eligible specialty (heuristic — not verified)

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 reported

NPI registry status

Active

Issued 12/13/2006

NPI 1316008360

Primary specialty

Addiction Medicine (Psychiatry & Neurology) Physician

Niche

658 US NPIs in this specialty

Medicare Part D claims

127 88% vs specialty avg

2023 prescription claims

Specialty avg: 1,019

Specialty distribution in Connecticut

How Addiction Medicine (Psychiatry & Neurology) Physician compares to other specialties among Connecticut providers

Connecticut providers

Addiction Medicine (Psychiatry & Neurology) Physician share within Connecticut

1. Addiction Medicine (Psychiatry & Neurology) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Addiction Medicine (Psychiatry & Neurology) Physician share within Connecticut

Specialty board-certification context

Estimated specialty board-certified rate — Addiction Medicine (Psychiatry & Neurology) Physician (ABMS / AOA reference)

Quality data not reported
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

0%100%78%
Est. board-certified rate (Addiction Medicine (Psychiatry & Neurology) Physician) — ABMS / AOA estimate

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

8 TITUS RD
WASHINGTON DEPOT, CT 06794

Provider Details

NPI 1316008360
Specialty Addiction Medicine (Psychiatry & Neurology) Physician
Credentials MD
Gender Male
NPI Issued 12/13/2006

Brand vs generic prescribing mix · Typical

JOHN EWING, MD — brand share 17.0%
Specialty average (est.)

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.

127
Total Claims
$18K
Total Drug Cost
13
Medicare Beneficiaries

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

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
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.

658
Addiction Medicine (Psychiatry & Neurology) Physician Providers in US
49
States with Addiction Medicine (Psychiatry & Neurology) Physician
1,019
Avg Claims per Provider

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.

Compare Addiction Medicine (Psychiatry & Neurology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOHN EWING, MD's specialty?
JOHN EWING, MD specializes in Addiction Medicine (Psychiatry & Neurology) Physician and practices in WASHINGTON DEPOT, Connecticut. Credentials: MD.
How much does JOHN EWING, MD prescribe under Medicare Part D?
In 2023, JOHN EWING, MD wrote 127 Medicare Part D claims totaling $18K in drug costs for 13 beneficiaries.
Where is JOHN EWING, MD located?
JOHN EWING, MD is located at 8 TITUS RD, WASHINGTON DEPOT, CT, 06794. Phone: (860) 868-1155.
What is JOHN EWING, MD's NPI number?
JOHN EWING, MD's National Provider Identifier (NPI) is 1316008360, issued on 12/13/2006.
Does JOHN EWING, MD prescribe more brand-name or generic drugs?
JOHN EWING, MD's prescribing is 17% brand-name and 83% generic drugs by claim count, with $9K in brand drug costs.
How many Addiction Medicine (Psychiatry & Neurology) Physician providers are there in the US?
There are 658 Addiction Medicine (Psychiatry & Neurology) Physician providers across 49 states in the US. The average Addiction Medicine (Psychiatry & Neurology) Physician provider writes 1,019 Medicare Part D claims per year.
What drugs does JOHN EWING, MD prescribe most often?
Based on 2023 Medicare Part D data, JOHN EWING, MD's most frequently prescribed drugs include Sertraline Hcl, Concerta, Vilazodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHN EWING, MD accept Medicare?
JOHN EWING, MD appears in CMS Medicare data with 127 Part D claims and 13 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN EWING, MD's credentials?
JOHN EWING, MD's NPI is 1316008360 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

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