NPI registry status
Active
2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1386626174 M.D.
Verify on CMS → Denis Moonan, M.D.
Geriatric Medicine (Internal Medicine) Physician in North Providence, Rhode Island.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,161 in Geriatric Medicine (Internal Medicine) 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
173
Medicare Part D claims · 50 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Denis Moonan, M.D. filed 173 Medicare Part D claims in 2023 as a Geriatric Medicine (Internal Medicine) Physician in North Providence, Rhode Island.
- 173
- 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.
Denis Moonan, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
173 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
◑
Board-eligible specialty (heuristic, not verified)
Denis Moonan, 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 Denis Moonan, M.D.?
Quality data not reportedPrimary specialty
Geriatric Medicine (Internal Medicine) Physician
Medicare Part D claims
173 96% vs specialty avg
Specialty distribution in Rhode Island
How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Rhode Island 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 Geriatric Medicine (Internal Medicine) 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).
Denis Moonan, M.D. appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding M.D. credentials at 1515 SMITH ST, North Providence, RI, 02911, with a listed phone of (401) 353-0555. NPI 1386626174 was issued on 11/16/2005.
Medicare Part D records for calendar year 2023 show 173 prescription claims written by this provider, covering 50 Medicare beneficiaries and totaling roughly $20K in drug spend.
Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 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 | 1386626174 |
|---|---|
| Specialty | Geriatric Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 11/16/2005 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
173
Total Claims
$20K
Total Drug Cost
50
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 354
- Total Day Supply
- 10,440
- Generic Drug Cost
- $7K
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 1.36
- Gender Split
- 64% female / 36% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Denis Moonan, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Albuterol Sulfate …
Albuterol Sulfate Hfa
12 claims
- Sertraline Hcl
Sertraline Hcl
12 claims
- Furosemide
Furosemide
11 claims
- Levothyroxine Sodium
Levothyroxine Sodium
11 claims
| Drug | Claims |
|---|---|
| Albuterol Sulfate Hfa Albuterol Sulfate | 12 |
| Sertraline Hcl | 12 |
| Furosemide | 11 |
| Levothyroxine Sodium | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Geriatric Medicine (Internal Medicine) Physician in RI →
All providers in Rhode Island →
Compare specialties →
Geriatric Medicine (Internal Medicine) Physician Overview
How Denis Moonan, M.D. fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.
4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider
Denis Moonan, M.D.'s 173 claims are below the specialty average of 4,450.
Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Rhode Island
Other clinicians with the same primary specialty enrolled in Rhode Island, drawn from the same CMS NPPES roster as Moonan.
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 Rhode Island medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Geriatric Medicine (Internal Medicine) 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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How to Find a Doctor
Step-by-step guide to choosing a provider
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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 Rhode Island
Frequently Asked Questions
What is Denis Moonan, M.D.'s specialty? ▼
Denis Moonan, M.D. specializes in Geriatric Medicine (Internal Medicine) Physician and practices in North Providence, Rhode Island. Credentials: M.D..
How much does Denis Moonan, M.D. prescribe under Medicare Part D? ▼
In 2023, Denis Moonan, M.D. wrote 173 Medicare Part D claims totaling $20K in drug costs for 50 beneficiaries.
Where is Denis Moonan, M.D. located? ▼
Denis Moonan, M.D. is located at 1515 SMITH ST, North Providence, RI, 02911. Phone: (401) 353-0555.
What is Denis Moonan, M.D.'s NPI number? ▼
Denis Moonan, M.D.'s National Provider Identifier (NPI) is 1386626174, issued on 11/16/2005.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does Denis Moonan, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Denis Moonan, M.D.'s most frequently prescribed drugs include Albuterol Sulfate Hfa, Sertraline Hcl, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Denis Moonan, M.D. accept Medicare? ▼
Denis Moonan, M.D. appears in CMS Medicare data with 173 Part D claims and 50 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Denis Moonan, M.D.'s credentials? ▼
Denis Moonan, M.D.'s NPI is 1386626174 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
Compiled from official public sources by the PlainDoctor editorial team.