NPI registry status
Active
2026 NPPES data Orthopaedic Foot and Ankle Surgery Physician NPI 1154374734 MD
Verify on CMS → Mark Charlson, MD
Orthopaedic Foot and Ankle Surgery Physician in South Burlington, 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 699 in Orthopaedic Foot and Ankle 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
56
Medicare Part D claims · 28 beneficiaries · Orthopaedic Foot and Ankle Surgery Physician avg: 229
What the federal data shows
Mark Charlson, MD filed 56 Medicare Part D claims in 2024 as an Orthopaedic Foot and Ankle Surgery Physician in South Burlington, Vermont.
- 56
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥0th
- 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 Mark Charlson, MD
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 1154374734), first enumerated 05/18/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 56 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
1 CMS Care Compare hospital affiliation 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 1154374734 · Orthopaedic Foot and Ankle Surgery Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1154374734
- ENUM-LEGACY 2006
- TAX-NARROW 699
- RX-TRACE 56
- BOOK-THIN 2 in Vermont
- PHOTO-ENUM Adam Brodsky, M.D. · 2006
Mark Charlson, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
56 ≥ 0th percentile 0% 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)
Mark Charlson, MD 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 Mark Charlson, MD?
Quality data not reportedPrimary specialty
Orthopaedic Foot and Ankle Surgery Physician
Medicare Part D claims
56 76% vs specialty avg
Specialty distribution in Vermont
How Orthopaedic Foot and Ankle 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 Orthopaedic Foot and Ankle 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).
Practice Address
Provider Details
| NPI | 1154374734 |
|---|---|
| Specialty | Orthopaedic Foot and Ankle Surgery Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/18/2006 |
Hospital and facility affiliations
Facilities where Mark Charlson, MD 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.
University OF Vermont Medical Center Inc
Burlington, 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 2024.
56
Total Claims
$460
Total Drug Cost
28
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 68
- Total Day Supply
- 1,209
- Generic Drug Cost
- $442
- Opioid Claims
- 16 (28.6% rate)
- Antibiotic Claims
- 13
Patient Demographics
- Average Patient Age
- 64.5 years
- Avg HCC Risk Score
- 1.39
- Gender Split
- 54% female / 46% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Orthopaedic Foot and Ankle Surgery Physician in VT →
All providers in Vermont →
Compare specialties →
Orthopaedic Foot and Ankle Surgery Physician Overview
How Mark Charlson, MD fits within the Orthopaedic Foot and Ankle Surgery Physician landscape nationally.
699
Orthopaedic Foot and Ankle Surgery Physician Providers in US
51
States with Orthopaedic Foot and Ankle Surgery Physician
229
Avg Claims per Provider
Mark Charlson, MD's 56 claims are below the specialty average of 229.
Nationwide Orthopaedic Foot and Ankle Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Charlson, both outside Vermont so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Orthopaedic Foot and Ankle Surgery Physician Providers in Vermont
Other clinicians with the same primary specialty enrolled in Vermont, drawn from the same CMS NPPES roster as Charlson.
Compare Orthopaedic Foot and Ankle Surgery Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mark Charlson, MD's specialty? ▼
Mark Charlson, MD specializes in Orthopaedic Foot and Ankle Surgery Physician and practices in South Burlington, Vermont. Credentials: MD.
How much does Mark Charlson, MD prescribe under Medicare Part D? ▼
In 2024, Mark Charlson, MD wrote 56 Medicare Part D claims totaling $460 in drug costs for 28 beneficiaries.
Where is Mark Charlson, MD located? ▼
Mark Charlson, MD is located at 192 TILLEY DR, South Burlington, VT, 05403. Phone: (802) 847-2663.
What is Mark Charlson, MD's NPI number? ▼
Mark Charlson, MD's National Provider Identifier (NPI) is 1154374734, issued on 05/18/2006.
Does Mark Charlson, MD prescribe opioids? ▼
Yes, Mark Charlson, MD had 16 opioid claims in 2024 with an opioid prescribing rate of 28.6%.
How many Orthopaedic Foot and Ankle Surgery Physician providers are there in the US? ▼
There are 699 Orthopaedic Foot and Ankle Surgery Physician providers across 51 states in the US. The average Orthopaedic Foot and Ankle Surgery Physician provider writes 229 Medicare Part D claims per year.
What drugs does Mark Charlson, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Mark Charlson, MD's most frequently prescribed drugs include Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Charlson, MD accept Medicare? ▼
Mark Charlson, MD appears in CMS Medicare data with 56 Part D claims and 28 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Charlson, MD's credentials? ▼
Mark Charlson, MD's NPI is 1154374734 with credentials MD. 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.