NPI registry status
Active
2026 NPPES data Dermatopathology Physician NPI 1922391150 M.D.
Verify on CMS → Christopher Dimarco, M.D.
Dermatopathology Physician in Riverside, 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 577 in Dermatopathology 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
404
Medicare Part D claims · 125 beneficiaries · Dermatopathology Physician avg: 695
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Christopher Dimarco, M.D. filed 404 Medicare Part D claims in 2024 as a Dermatopathology Physician in Riverside, Rhode Island, prescribing 97% generic.
- 404
- Part D claims, 2024
- 97%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥61st
- 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.
Federal trust snapshot
What official records show about Christopher Dimarco, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1922391150), first enumerated 05/20/2011.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 404 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
4 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1922391150 · Dermatopathology Physician
NPI-10 · ENUM-MID · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1922391150
- ENUM-MID 2011
- TAX-NARROW 577
- RX-LIGHT 404
- BOOK-THIN 3 in Rhode Island
- PHOTO-ENUM Elizabeth Bailey · 2011
Christopher Dimarco, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
404 ≥ 61st percentile 61% of 1,416,883 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 · 2024
✓
Board certification likely (heuristic, not verified)
Christopher Dimarco, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 4 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Christopher Dimarco, M.D.?
Quality data not reportedPrimary specialty
Dermatopathology Physician
Medicare Part D claims
404 42% vs specialty avg
Specialty distribution in Rhode Island
How Dermatopathology 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 Dermatopathology 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).
Practice Address
Provider Details
| NPI | 1922391150 |
|---|---|
| Specialty | Dermatopathology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/20/2011 |
Hospital and facility affiliations
Facilities where Christopher Dimarco, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
According to CMS billing records, Christopher Dimarco, M.D. is affiliated with 4 Medicare-billing facilities, 2 of which carry a CMS Hospital overall star rating.
Rhode Island Hospital
★★★★☆ 4/5
Providence, RI
Acute Care Hospitals
CMS CCN: 410007
The Miriam Hospital
★★★★☆ 4/5
Providence, RI
Acute Care Hospitals
CMS CCN: 410012
Brown Dermatology Inc
Providence, RI
Lifespan Physician Group Inc
Riverside, RI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
Christopher Dimarco, M.D. - brand share 3.0%
Dermatopathology Physician average
3% brand-name claims vs 97% generic, on 404 2024 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 2024.
404
Total Claims
$180K
Total Drug Cost
125
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 540.533
- Total Day Supply
- 15,394
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $166K
- Generic Drug Cost
- $14K
- Antibiotic Claims
- 32
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 1.26
- Gender Split
- 35% female / 65% male
- Age Distribution
- <65: 16, 65-74: 44, 75-84: 48, 85+: 17
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Christopher Dimarco, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Triamcinolone Acet…
Triamcinolone Acetonide
74 claims
- Ketoconazole
Ketoconazole
32 claims
- Nystatin
Nystatin
30 claims
- Methotrexate 22
Methotrexate
22 claims
- Fluocinolone Aceto… 16
Fluocinolone Acetonide
16 claims
- Minoxidil 16
Minoxidil
16 claims
- Betamethasone Dipr… 12
Betamethasone Dipropionate
12 claims
- Clobetasol Propion… 12
Clobetasol Propionate
12 claims
| Drug | Claims |
|---|---|
| Triamcinolone Acetonide | 74 |
| Ketoconazole | 32 |
| Nystatin | 30 |
| Methotrexate Methotrexate Sodium | 22 |
| Fluocinolone Acetonide | 16 |
| Minoxidil | 16 |
| Betamethasone Dipropionate | 12 |
| Clobetasol Propionate | 12 |
| Fluocinonide | 12 |
| Spironolactone | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Dermatopathology Physician Overview
How Christopher Dimarco, M.D. fits within the Dermatopathology Physician landscape nationally.
577
Dermatopathology Physician Providers in US
48
States with Dermatopathology Physician
695
Avg Claims per Provider
Christopher Dimarco, M.D.'s 404 claims are below the specialty average of 695.
Nationwide Dermatopathology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Dimarco, both outside Rhode Island so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2011)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Dermatopathology Physician Providers in Rhode Island
Other clinicians with the same primary specialty enrolled in Rhode Island, drawn from the same CMS NPPES roster as Dimarco.
One of 3 Dermatopathology Physician providers enrolled in Rhode Island, 2 are shown here.
Compare Dermatopathology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Christopher Dimarco, M.D.'s specialty? ▼
Christopher Dimarco, M.D. specializes in Dermatopathology Physician and practices in Riverside, Rhode Island. Credentials: M.D..
How much does Christopher Dimarco, M.D. prescribe under Medicare Part D? ▼
In 2024, Christopher Dimarco, M.D. wrote 404 Medicare Part D claims totaling $180K in drug costs for 125 beneficiaries.
Where is Christopher Dimarco, M.D. located? ▼
Christopher Dimarco, M.D. is located at 375 WAMPANOAG TRL STE 401, Riverside, RI, 02915. Phone: (401) 444-7959.
What is Christopher Dimarco, M.D.'s NPI number? ▼
Christopher Dimarco, M.D.'s National Provider Identifier (NPI) is 1922391150, issued on 05/20/2011.
Does Christopher Dimarco, M.D. prescribe more brand-name or generic drugs? ▼
Christopher Dimarco, M.D.'s prescribing is 3% brand-name and 97% generic drugs by claim count, with $166K in brand drug costs.
How many Dermatopathology Physician providers are there in the US? ▼
There are 577 Dermatopathology Physician providers across 48 states in the US. The average Dermatopathology Physician provider writes 695 Medicare Part D claims per year.
What drugs does Christopher Dimarco, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Christopher Dimarco, M.D.'s most frequently prescribed drugs include Triamcinolone Acetonide, Ketoconazole, Nystatin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Christopher Dimarco, M.D. accept Medicare? ▼
Christopher Dimarco, M.D. appears in CMS Medicare data with 404 Part D claims and 125 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christopher Dimarco, M.D.'s credentials? ▼
Christopher Dimarco, M.D.'s NPI is 1922391150 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.