NPI registry status
Active
2026 NPPES data Pain Medicine (Anesthesiology) Physician NPI 1255350831 MD
Verify on CMS → Marc Swanson, MD
Pain Medicine (Anesthesiology) Physician in Salem, Virginia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,032 in Pain Medicine (Anesthesiology) 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
8K
Medicare Part D claims · 761 beneficiaries · Pain Medicine (Anesthesiology) Physician avg: 2K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
92.2/100
▲ 9 pts above national avg 83.1 · Exceptional
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
Marc Swanson, MD reported a CMS MIPS final score of 92.2/100 - above the 83.1 national average - and filed 8,458 Medicare Part D claims in 2023.
- 92.2/100
- MIPS score · +9 vs avg
- 8K
- Part D claims, 2023
- 92%
- generic prescribing
- 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.
Marc Swanson, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
92 Top 32% higher than 68% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Marc Swanson, MD sits
This provider among pain medicine (anesthesiology) physician peers
Across the 1,110 pain medicine (anesthesiology) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Marc Swanson, MD writes more Part D claims than 95% of them and scores higher on MIPS quality than 76% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one pain medicine (anesthesiology) physician peer from a representative sample of 60; the gold marker is Marc Swanson, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Marc Swanson, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Marc Swanson, MD?
High performer (top quartile)Primary specialty
Pain Medicine (Anesthesiology) Physician
Medicare Part D claims
8,458 5× vs specialty avg
MIPS final score
92.2/100 9.1 pts vs avg
Specialty distribution in Virginia
How Pain Medicine (Anesthesiology) Physician compares to other specialties among Virginia providers
Medicare quality performance, MIPS
Marc Swanson, MD's 2023 MIPS final score plotted against the Pain Medicine (Anesthesiology) Physician national average
- MIPS Final Score
- 92.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Pain Medicine (Anesthesiology) Physician) - 92.2/100 vs national avg 83.1
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).
Marc Swanson, MD appears in the CMS NPPES registry as a Pain Medicine (Anesthesiology) Physician provider holding MD credentials at 100 KNOTBREAK RD, Salem, VA, 24153, with a listed phone of (540) 444-5670. NPI 1255350831 was issued on 07/18/2006.
Medicare Part D records for calendar year 2023 show 8,458 prescription claims written by this provider, covering 761 Medicare beneficiaries and totaling roughly $542K in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 69.4%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 92.2/100 for the 2023 performance year (Quality 79.9), compared with the national average of 83.1.
Pain Medicine (Anesthesiology) Physician is a narrow specialty nationwide, with 4,032 enrolled providers across 53 states and an average of 1,657 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 | 1255350831 |
|---|---|
| Specialty | Pain Medicine (Anesthesiology) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/18/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
92.179
Final Score
Avg: 83.1
79.9227
Quality
Reporting: Group practice
Brand vs generic prescribing mix · Generic-heavy
Marc Swanson, MD - brand share 8.0%
Pain Medicine (Anesthesiology) Physician average
8% brand-name claims vs 92% generic, on 8,458 2023 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 2023.
8,458
Total Claims
$542K
Total Drug Cost
761
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,040
- Total Day Supply
- 259,972
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $285K
- Generic Drug Cost
- $257K
- Opioid Claims
- 5,866 (69.4% rate)
- Antibiotic Claims
- 17
Patient Demographics
- Average Patient Age
- 66.3 years
- Avg HCC Risk Score
- 1.69
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 316, 65-74: 298, 75-84: 113, 85+: 34
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Marc Swanson, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Oxycodone Hcl
Oxycodone Hcl
1,927 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
1,300 claims
- Oxycodone-Acetamin… 713
Oxycodone-Acetaminophen
713 claims
- Gabapentin 540
Gabapentin
540 claims
- Hydromorphone Hcl 441
Hydromorphone Hcl
441 claims
- Morphine Sulfate Er 440
Morphine Sulfate Er
440 claims
- Fentanyl 273
Fentanyl
273 claims
- Lorazepam 259
Lorazepam
259 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 1,927 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 1,300 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 713 |
| Gabapentin | 540 |
| Hydromorphone Hcl | 441 |
| Morphine Sulfate Er Morphine Sulfate | 440 |
| Fentanyl | 273 |
| Lorazepam | 259 |
| Pregabalin | 205 |
| Methadone Hcl | 176 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Pain Medicine (Anesthesiology) Physician in VA →
All providers in Virginia →
Compare specialties →
Pain Medicine (Anesthesiology) Physician Overview
How Marc Swanson, MD fits within the Pain Medicine (Anesthesiology) Physician landscape nationally.
4,032
Pain Medicine (Anesthesiology) Physician Providers in US
53
States with Pain Medicine (Anesthesiology) Physician
1,657
Avg Claims per Provider
Marc Swanson, MD's 8,458 claims are above the specialty average of 1,657.
Nearby Pain Medicine (Anesthesiology) Physician Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as Swanson.
Dr. Vaia Abatzis
M.D.
Charlottesville, VA
Dr. Amgad Abdou
M.D.
Fairfax, VA
Dr. Ellen Adams
MD
Fairfax, VA
Dr. Noel Ashcraft
D.O.
Winchester, VA
Dr. Khalid Athar
MD
Culpeper, VA
Compare Pain Medicine (Anesthesiology) 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 Virginia medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pain Medicine (Anesthesiology) 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 Marc Swanson, MD's specialty? ▼
Marc Swanson, MD specializes in Pain Medicine (Anesthesiology) Physician and practices in Salem, Virginia. Credentials: MD.
How much does Marc Swanson, MD prescribe under Medicare Part D? ▼
In 2023, Marc Swanson, MD wrote 8,458 Medicare Part D claims totaling $542K in drug costs for 761 beneficiaries.
What is Marc Swanson, MD's Medicare quality score? ▼
Marc Swanson, MD has a CMS MIPS Final Score of 92.2/100 (Quality: 79.9). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Marc Swanson, MD located? ▼
Marc Swanson, MD is located at 100 KNOTBREAK RD, Salem, VA, 24153. Phone: (540) 444-5670.
What is Marc Swanson, MD's NPI number? ▼
Marc Swanson, MD's National Provider Identifier (NPI) is 1255350831, issued on 07/18/2006.
Does Marc Swanson, MD prescribe more brand-name or generic drugs? ▼
Marc Swanson, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $285K in brand drug costs.
Does Marc Swanson, MD prescribe opioids? ▼
Yes, Marc Swanson, MD had 5,866 opioid claims in 2023 with an opioid prescribing rate of 69.4%.
How many Pain Medicine (Anesthesiology) Physician providers are there in the US? ▼
There are 4,032 Pain Medicine (Anesthesiology) Physician providers across 53 states in the US. The average Pain Medicine (Anesthesiology) Physician provider writes 1,657 Medicare Part D claims per year.
What drugs does Marc Swanson, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Marc Swanson, MD's most frequently prescribed drugs include Oxycodone Hcl, Hydrocodone-Acetaminophen, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Marc Swanson, MD accept Medicare? ▼
Marc Swanson, MD appears in CMS Medicare data with 8,458 Part D claims and 761 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Marc Swanson, MD's credentials? ▼
Marc Swanson, MD's NPI is 1255350831 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 (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.