NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1831194992 M.D.
Verify on CMS → Kenneth Son, M.D.
Internal Medicine Physician in Marion, Ohio.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,737 in 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
743
Medicare Part D claims · 300 beneficiaries · Internal Medicine Physician avg: 3K
What the federal data shows
Kenneth Son, M.D. filed 743 Medicare Part D claims in 2023 as an Internal Medicine Physician in Marion, Ohio.
- 743
- Part D claims, 2023
- Likely
- board-certified (heuristic)
- ≥71st
- 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.
Kenneth Son, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
743 ≥ 71st percentile 71% 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 certification likely (heuristic, not verified)
Kenneth Son, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 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 Kenneth Son, M.D.?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
743 73% vs specialty avg
Specialty distribution in Ohio
How Internal Medicine Physician compares to other specialties among Ohio 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 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).
Kenneth Son, M.D. appears in the CMS NPPES registry as an Internal Medicine Physician provider holding M.D. credentials at 1000 MCKINLEY PARK DR, Marion, OH, 43302, with a listed phone of (740) 383-8473. NPI 1831194992 was issued on 06/16/2005.
Medicare Part D records for calendar year 2023 show 743 prescription claims written by this provider, covering 300 Medicare beneficiaries and totaling roughly $35K in drug spend, with an opioid prescribing rate of 4.6%.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,737 enrolled providers across 56 states and an average of 2,716 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 | 1831194992 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 06/16/2005 |
Hospital and facility affiliations
Facilities where Kenneth Son, 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.
Hisey Physician Services, LLC
Middletown, OH
Ohiohealth Corporation
Marion, OH
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Ohio OMB 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~48K Ohio medical licensees in 2023 - they are NOT specific to Kenneth Son, M.D.. To verify Kenneth Son, M.D.'s current license status, search the OMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
158
Total board actions, Ohio 2023
Across 154 cases
3.29
Actions per 1,000 licensees
Ohio statewide rate
probation
Most common action type
56 cases
OMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Ohio disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
743
Total Claims
$35K
Total Drug Cost
300
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 798
- Total Day Supply
- 16,536
- Generic Drug Cost
- $9K
- Opioid Claims
- 34 (4.6% rate)
- Antibiotic Claims
- 127
Patient Demographics
- Average Patient Age
- 75.2 years
- Avg HCC Risk Score
- 2.14
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 38, 65-74: 94, 75-84: 109, 85+: 59
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Kenneth Son, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Furosemide
Furosemide
55 claims
- Prednisone
Prednisone
49 claims
- Metoprolol Tartrate
Metoprolol Tartrate
40 claims
- Cefuroxime
Cefuroxime
38 claims
- Potassium Chloride
Potassium Chloride
31 claims
- Amlodipine Besylate 20
Amlodipine Besylate
20 claims
- Albuterol Sulfate … 18
Albuterol Sulfate Hfa
18 claims
- Amoxicillin-Clavul… 17
Amoxicillin-Clavulanate Potass
17 claims
| Drug | Claims |
|---|---|
| Furosemide | 55 |
| Prednisone | 49 |
| Metoprolol Tartrate | 40 |
| Cefuroxime Cefuroxime Axetil | 38 |
| Potassium Chloride | 31 |
| Amlodipine Besylate | 20 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 18 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 17 |
| Azithromycin | 17 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Kenneth Son, M.D. fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Kenneth Son, M.D.'s 743 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Ohio
Other clinicians with the same primary specialty enrolled in Ohio, drawn from the same CMS NPPES roster as Son.
Dr. Evan Abalos
D.O.
Toledo, OH
Dr. Teah Abashidze
M.D.
Cleveland, OH
Dr. Rami Abboud
MD
Lorain, OH
Dr. Walid Abboud
MD
Cleveland, OH
Dr. Moshrik Abd-Alamir
M.D.
Toledo, OH
Compare Internal Medicine 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 Ohio medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby 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.
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Frequently Asked Questions
What is Kenneth Son, M.D.'s specialty? ▼
Kenneth Son, M.D. specializes in Internal Medicine Physician and practices in Marion, Ohio. Credentials: M.D..
How much does Kenneth Son, M.D. prescribe under Medicare Part D? ▼
In 2023, Kenneth Son, M.D. wrote 743 Medicare Part D claims totaling $35K in drug costs for 300 beneficiaries.
Where is Kenneth Son, M.D. located? ▼
Kenneth Son, M.D. is located at 1000 MCKINLEY PARK DR, Marion, OH, 43302. Phone: (740) 383-8473.
What is Kenneth Son, M.D.'s NPI number? ▼
Kenneth Son, M.D.'s National Provider Identifier (NPI) is 1831194992, issued on 06/16/2005.
Does Kenneth Son, M.D. prescribe opioids? ▼
Yes, Kenneth Son, M.D. had 34 opioid claims in 2023 with an opioid prescribing rate of 4.6%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Kenneth Son, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Kenneth Son, M.D.'s most frequently prescribed drugs include Furosemide, Prednisone, Metoprolol Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kenneth Son, M.D. accept Medicare? ▼
Kenneth Son, M.D. appears in CMS Medicare data with 743 Part D claims and 300 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kenneth Son, M.D.'s credentials? ▼
Kenneth Son, M.D.'s NPI is 1831194992 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.