NPI registry status
Active
2026 NPPES data Surgery of the Hand (Surgery) Physician NPI 1992071757 MD, MPH
Verify on CMS → John Karl, MD, MPH
Surgery of the Hand (Surgery) Physician in Rutland, Vermont.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 398 in Surgery of the Hand (Surgery) 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
34
Medicare Part D claims · 23 beneficiaries · Surgery of the Hand (Surgery) Physician avg: 175
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
John Karl, MD, MPH filed 34 Medicare Part D claims in 2023 as a Surgery of the Hand (Surgery) Physician in Rutland, Vermont.
- 34
- Part D claims, 2023
- Likely
- board-certified (heuristic)
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.
John Karl, MD, MPH's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
34 0th percentile higher than 0% 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 certification likely (heuristic, not verified)
John Karl, MD, MPH practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 John Karl, MD, MPH?
Quality data not reportedPrimary specialty
Surgery of the Hand (Surgery) Physician
Medicare Part D claims
34 81% vs specialty avg
Specialty distribution in Vermont
How Surgery of the Hand (Surgery) Physician compares to other specialties among Vermont 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 Surgery of the Hand (Surgery) 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).
John Karl, MD, MPH appears in the CMS NPPES registry as a Surgery of the Hand (Surgery) Physician provider holding MD, MPH credentials at 160 ALLEN ST, Rutland, VT, 05701, with a listed phone of (802) 775-2937. NPI 1992071757 was issued on 03/27/2012.
Medicare Part D records for calendar year 2023 show 34 prescription claims written by this provider, covering 23 Medicare beneficiaries and totaling roughly $64 in drug spend, with an opioid prescribing rate of 50.0%.
Surgery of the Hand (Surgery) Physician is a narrow specialty nationwide, with 398 enrolled providers across 44 states and an average of 175 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 | 1992071757 |
|---|---|
| Specialty | Surgery of the Hand (Surgery) Physician |
| Credentials | MD, MPH |
| Gender | Male |
| NPI Issued | 03/27/2012 |
Hospital and facility affiliations
Facilities where John Karl, MD, MPH 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.
Rutland Hospital, Inc.
Rutland, VT
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
34
Total Claims
$64
Total Drug Cost
23
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 34
- Total Day Supply
- 128
- Brand Drug Cost
- $0
- Generic Drug Cost
- $64
- Opioid Claims
- 17 (50.0% rate)
- Antibiotic Claims
- 16
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 0.79
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Amoxicillin | 13 |
| Tramadol Hcl | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Surgery of the Hand (Surgery) Physician in VT →
All providers in Vermont →
Compare specialties →
Surgery of the Hand (Surgery) Physician Overview
How John Karl, MD, MPH fits within the Surgery of the Hand (Surgery) Physician landscape nationally.
398
Surgery of the Hand (Surgery) Physician Providers in US
44
States with Surgery of the Hand (Surgery) Physician
175
Avg Claims per Provider
John Karl, MD, MPH's 34 claims are below the specialty average of 175.
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 Vermont medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Surgery of the Hand (Surgery) 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 Vermont
Frequently Asked Questions
What is John Karl, MD, MPH's specialty? ▼
John Karl, MD, MPH specializes in Surgery of the Hand (Surgery) Physician and practices in Rutland, Vermont. Credentials: MD, MPH.
How much does John Karl, MD, MPH prescribe under Medicare Part D? ▼
In 2023, John Karl, MD, MPH wrote 34 Medicare Part D claims totaling $64 in drug costs for 23 beneficiaries.
Where is John Karl, MD, MPH located? ▼
John Karl, MD, MPH is located at 160 ALLEN ST, Rutland, VT, 05701. Phone: (802) 775-2937.
What is John Karl, MD, MPH's NPI number? ▼
John Karl, MD, MPH's National Provider Identifier (NPI) is 1992071757, issued on 03/27/2012.
Does John Karl, MD, MPH prescribe opioids? ▼
Yes, John Karl, MD, MPH had 17 opioid claims in 2023 with an opioid prescribing rate of 50.0%.
How many Surgery of the Hand (Surgery) Physician providers are there in the US? ▼
There are 398 Surgery of the Hand (Surgery) Physician providers across 44 states in the US. The average Surgery of the Hand (Surgery) Physician provider writes 175 Medicare Part D claims per year.
What drugs does John Karl, MD, MPH prescribe most often? ▼
Based on 2023 Medicare Part D data, John Karl, MD, MPH's most frequently prescribed drugs include Amoxicillin, Tramadol Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Karl, MD, MPH accept Medicare? ▼
John Karl, MD, MPH appears in CMS Medicare data with 34 Part D claims and 23 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Karl, MD, MPH's credentials? ▼
John Karl, MD, MPH's NPI is 1992071757 with credentials MD, MPH. 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.