NPI registry status
Active
2026 NPPES data Dermatology Physician NPI 1609820604 M.D.
Verify on CMS → Satori Iwamoto, M.D.
Dermatology Physician in 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 14,645 in Dermatology 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
103
Medicare Part D claims · 83 beneficiaries · Dermatology Physician avg: 729
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Satori Iwamoto, M.D. filed 103 Medicare Part D claims in 2023 as a Dermatology Physician in Providence, Rhode Island.
- 103
- 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.
Satori Iwamoto, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
103 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)
Satori Iwamoto, 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 Satori Iwamoto, M.D.?
Quality data not reportedPrimary specialty
Dermatology Physician
Medicare Part D claims
103 86% vs specialty avg
Specialty distribution in Rhode Island
How Dermatology 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 Dermatology 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).
Satori Iwamoto, M.D. appears in the CMS NPPES registry as a Dermatology Physician provider holding M.D. credentials at 50 MAUDE ST, Providence, RI, 02908, with a listed phone of (401) 456-2327. NPI 1609820604 was issued on 05/22/2006.
Medicare Part D records for calendar year 2023 show 103 prescription claims written by this provider, covering 83 Medicare beneficiaries and totaling roughly $886 in drug spend.
Dermatology Physician is a mid-sized specialty nationwide, with 14,645 enrolled providers across 53 states and an average of 729 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 | 1609820604 |
|---|---|
| Specialty | Dermatology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/22/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
103
Total Claims
$886
Total Drug Cost
83
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 103
- Total Day Supply
- 557
- Brand Drug Cost
- $0
- Generic Drug Cost
- $886
- Antibiotic Claims
- 80
Patient Demographics
- Average Patient Age
- 78.7 years
- Avg HCC Risk Score
- 1.19
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 0, 65-74: 28, 75-84: 34, 85+: 21
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Doxycycline Hyclate | 56 |
| Amoxicillin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Dermatology Physician Overview
How Satori Iwamoto, M.D. fits within the Dermatology Physician landscape nationally.
14,645
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider
Satori Iwamoto, M.D.'s 103 claims are below the specialty average of 729.
Nearby Dermatology Physician Providers in Rhode Island
Other clinicians with the same primary specialty enrolled in Rhode Island, drawn from the same CMS NPPES roster as Iwamoto.
Dr. Marla Angermeier
M.D.
Providence, RI
Dr. Mary Arst
MD
Providence, RI
Dr. Orazio Basile
MD
Woonsocket, RI
Dr. Sarah Belden
D.O
Middletown, RI
Dr. Lionel Bercovitch
M.D.
Providence, RI
Compare Dermatology 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 Rhode Island medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Dermatology 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 Rhode Island
Frequently Asked Questions
What is Satori Iwamoto, M.D.'s specialty? ▼
Satori Iwamoto, M.D. specializes in Dermatology Physician and practices in Providence, Rhode Island. Credentials: M.D..
How much does Satori Iwamoto, M.D. prescribe under Medicare Part D? ▼
In 2023, Satori Iwamoto, M.D. wrote 103 Medicare Part D claims totaling $886 in drug costs for 83 beneficiaries.
Where is Satori Iwamoto, M.D. located? ▼
Satori Iwamoto, M.D. is located at 50 MAUDE ST, Providence, RI, 02908. Phone: (401) 456-2327.
What is Satori Iwamoto, M.D.'s NPI number? ▼
Satori Iwamoto, M.D.'s National Provider Identifier (NPI) is 1609820604, issued on 05/22/2006.
How many Dermatology Physician providers are there in the US? ▼
There are 14,645 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does Satori Iwamoto, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Satori Iwamoto, M.D.'s most frequently prescribed drugs include Doxycycline Hyclate, Amoxicillin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Satori Iwamoto, M.D. accept Medicare? ▼
Satori Iwamoto, M.D. appears in CMS Medicare data with 103 Part D claims and 83 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Satori Iwamoto, M.D.'s credentials? ▼
Satori Iwamoto, M.D.'s NPI is 1609820604 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.
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.