NPI registry status
Active
2026 NPPES data Addiction Psychiatry Physician NPI 1467898817 M.D.
Verify on CMS → Ashwin Jacob Mathai, M.D.
Addiction Psychiatry Physician in Washington, District of Columbia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 666 in Addiction Psychiatry 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
21
Medicare Part D claims · Addiction Psychiatry Physician avg: 792
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Ashwin Jacob Mathai, M.D. filed 21 Medicare Part D claims in 2023 as an Addiction Psychiatry Physician in Washington, District of Columbia.
- 21
- Part D claims, 2023
- ≥0th
- pct by Part D claim volume (lower-bound band)
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.
Ashwin Jacob Mathai, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
21 ≥ 0th percentile 0% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Ashwin Jacob Mathai, M.D. 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 Ashwin Jacob Mathai, M.D.?
Quality data not reportedPrimary specialty
Addiction Psychiatry Physician
Medicare Part D claims
21 97% vs specialty avg
Specialty distribution in District of Columbia
How Addiction Psychiatry Physician compares to other specialties among District of Columbia 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 Addiction Psychiatry Physician. 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).
Ashwin Jacob Mathai, M.D. appears in the CMS NPPES registry as an Addiction Psychiatry Physician provider holding M.D. credentials at 35 K ST NE, Washington, DC, 20002, with a listed phone of (204) 442-4187. NPI 1467898817 was issued on 05/13/2013.
Medicare Part D records for calendar year 2023 show 21 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $943 in drug spend.
Addiction Psychiatry Physician is a narrow specialty nationwide, with 666 enrolled providers across 49 states and an average of 792 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 | 1467898817 |
|---|---|
| Specialty | Addiction Psychiatry Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/13/2013 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
21
Total Claims
$943
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 29
- Total Day Supply
- 865
- Brand Drug Cost
- $0
- Generic Drug Cost
- $943
Patient Demographics
- Average Patient Age
- 49.7 years
- Avg HCC Risk Score
- 0.99
More Addiction Psychiatry Physician in DC →
All providers in District of Columbia →
Compare specialties →
Addiction Psychiatry Physician Overview
How Ashwin Jacob Mathai, M.D. fits within the Addiction Psychiatry Physician landscape nationally.
666
Addiction Psychiatry Physician Providers in US
49
States with Addiction Psychiatry Physician
792
Avg Claims per Provider
Ashwin Jacob Mathai, M.D.'s 21 claims are below the specialty average of 792.
Nationwide Addiction Psychiatry Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Jacob Mathai, both outside District of Columbia so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2013)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Addiction Psychiatry Physician Providers in District of Columbia
Other clinicians with the same primary specialty enrolled in District of Columbia, drawn from the same CMS NPPES roster as Jacob Mathai.
One of 6 Addiction Psychiatry Physician providers enrolled in District of Columbia, 5 are shown here.
Dr. William Lawson
MD
Washington, DC
Dr. Robert Mickey
MD
Washington, DC
Dr. Sally Satel
MD
Washington, DC
Dr. Richard Schottenfeld
M.D.
Washington, DC
Dr. John Syphax
MD
Washington, DC
Compare Addiction Psychiatry 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 District of Columbia medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Addiction Psychiatry 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.
Healthcare Guides
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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 District of Columbia
Frequently Asked Questions
What is Ashwin Jacob Mathai, M.D.'s specialty? ▼
Ashwin Jacob Mathai, M.D. specializes in Addiction Psychiatry Physician and practices in Washington, District of Columbia. Credentials: M.D..
How much does Ashwin Jacob Mathai, M.D. prescribe under Medicare Part D? ▼
In 2023, Ashwin Jacob Mathai, M.D. wrote 21 Medicare Part D claims totaling $943 in drug costs for N/A beneficiaries.
Where is Ashwin Jacob Mathai, M.D. located? ▼
Ashwin Jacob Mathai, M.D. is located at 35 K ST NE, Washington, DC, 20002. Phone: (204) 442-4187.
What is Ashwin Jacob Mathai, M.D.'s NPI number? ▼
Ashwin Jacob Mathai, M.D.'s National Provider Identifier (NPI) is 1467898817, issued on 05/13/2013.
How many Addiction Psychiatry Physician providers are there in the US? ▼
There are 666 Addiction Psychiatry Physician providers across 49 states in the US. The average Addiction Psychiatry Physician provider writes 792 Medicare Part D claims per year.
Does Ashwin Jacob Mathai, M.D. accept Medicare? ▼
Ashwin Jacob Mathai, M.D. appears in CMS Medicare data with 21 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 Ashwin Jacob Mathai, M.D.'s credentials? ▼
Ashwin Jacob Mathai, M.D.'s NPI is 1467898817 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.
- 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
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.