NPI registry status
Active
2026 NPPES data Pain Medicine (Anesthesiology) Physician NPI 1982830725 MD
Verify on CMS → Mark Horton, MD
Pain Medicine (Anesthesiology) Physician in Keene, New Hampshire.
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
417
Medicare Part D claims · 85 beneficiaries · Pain Medicine (Anesthesiology) Physician avg: 2K
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
78.6/100
▼ 5 pts below national avg 83.5 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Mark Horton, MD reported a CMS MIPS final score of 78.6/100 - below the 83.5 national average - and filed 417 Medicare Part D claims in 2023.
- 78.6/100
- MIPS score · -5 vs avg
- 417
- Part D claims, 2023
- 95%
- 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.
CMS NPPES provider registry desk
NPI 1982830725 · Pain Medicine (Anesthesiology) Physician
NPI-10 · ENUM-MID · TAX-NARROW · MIPS-BELOW · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1982830725
- ENUM-MID 2009
- TAX-NARROW 4,032
- MIPS-BELOW 78.6/100
- RX-LIGHT 417
- BOOK-THIN 28 in New Hampshire
- PHOTO-FINISH Tammy Penhollow · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Brandon Vannoord…
Brandon Vannoord
78.5 MIPS pts
- Horton · this pr…
Horton · this provider
78.6 MIPS pts
- Tammy Penhollow …
Tammy Penhollow
78.6 MIPS pts
- Natalie Strand ·…
Natalie Strand
78.6 MIPS pts
- Wajde Dabah · hi…
Wajde Dabah
78.7 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Mark Horton, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
79 ≥ 23rd percentile 23% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Mark Horton, MD sits
This provider among pain medicine (anesthesiology) physician peers
Across the 928 pain medicine (anesthesiology) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Mark Horton, MD writes more Part D claims than 31% of them and scores higher on MIPS quality than 41% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one pain medicine (anesthesiology) physician peer from a representative sample of 60; the gold marker is Mark Horton, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Mark Horton, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Mark Horton, MD?
Near national averagePrimary specialty
Pain Medicine (Anesthesiology) Physician
Medicare Part D claims
417 75% vs specialty avg
MIPS final score
78.6/100 4.9 pts vs avg
Specialty distribution in New Hampshire
How Pain Medicine (Anesthesiology) Physician compares to other specialties among New Hampshire providers
Medicare quality performance, MIPS
Mark Horton, MD's 2023 MIPS final score plotted against the Pain Medicine (Anesthesiology) Physician national average
- MIPS Final Score
- 78.6/100
- vs 83.5 national avg · 2023 performance year
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 | 1982830725 |
|---|---|
| Specialty | Pain Medicine (Anesthesiology) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/08/2009 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
78.6154
Final Score
Measured-score avg: 83.5
75.2274
Quality
53.4905
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Mark Horton, 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.
Cheshire Medical Center
★★★★☆ 4/5
Keene, NH
Acute Care Hospitals
CMS CCN: 300019
Mary Hitchcock Memorial Hospital
★★★☆☆ 3/5
Keene, NH
Acute Care Hospitals
CMS CCN: 300003
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
Mark Horton, MD - brand share 5.0%
Pain Medicine (Anesthesiology) Physician average
5% brand-name claims vs 95% generic, on 417 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.
417
Total Claims
$9K
Total Drug Cost
85
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 497
- Total Day Supply
- 13,584
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $1K
- Generic Drug Cost
- $8K
- Opioid Claims
- 163 (39.1% rate)
Patient Demographics
- Average Patient Age
- 68.5 years
- Avg HCC Risk Score
- 1.09
- Gender Split
- 69% female / 31% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mark Horton, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
96 claims
- Pregabalin
Pregabalin
86 claims
- Oxycodone Hcl
Oxycodone Hcl
67 claims
- Methadone Hcl 29
Methadone Hcl
29 claims
- Hydrocodone-Acetam… 24
Hydrocodone-Acetaminophen
24 claims
- Tizanidine Hcl 19
Tizanidine Hcl
19 claims
- Duloxetine Hcl 16
Duloxetine Hcl
16 claims
- Tramadol Hcl 15
Tramadol Hcl
15 claims
| Drug | Claims |
|---|---|
| Gabapentin | 96 |
| Pregabalin | 86 |
| Oxycodone Hcl | 67 |
| Methadone Hcl | 29 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 24 |
| Tizanidine Hcl | 19 |
| Duloxetine Hcl | 16 |
| Tramadol Hcl | 15 |
| Hydromorphone Hcl | 12 |
| Morphine Sulfate | 12 |
* 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 NH →
All providers in New Hampshire →
Compare specialties →
Pain Medicine (Anesthesiology) Physician Overview
How Mark Horton, 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
Mark Horton, MD's 417 claims are below the specialty average of 1,657.
Nationwide Pain Medicine (Anesthesiology) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Horton, both outside New Hampshire so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (78.6 here).
Same NPPES enumeration year (2009)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Pain Medicine (Anesthesiology) Physician Providers in New Hampshire
Other clinicians with the same primary specialty enrolled in New Hampshire, drawn from the same CMS NPPES roster as Horton.
One of 28 Pain Medicine (Anesthesiology) Physician providers enrolled in New Hampshire, 5 are shown here.
Dr. Michael Baker
M.D.
Portsmouth, NH
Dr. Ralph Beasley
MD
Lebanon, NH
Dr. Corey Burchman
MD
Lebanon, NH
Dr. Allen Carignan
M.D.
Barrington, NH
Dr. Jack Chan
MD
Newington, NH
Compare Pain Medicine (Anesthesiology) Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mark Horton, MD's specialty? ▼
Mark Horton, MD specializes in Pain Medicine (Anesthesiology) Physician and practices in Keene, New Hampshire. Credentials: MD.
How much does Mark Horton, MD prescribe under Medicare Part D? ▼
In 2023, Mark Horton, MD wrote 417 Medicare Part D claims totaling $9K in drug costs for 85 beneficiaries.
What is Mark Horton, MD's Medicare quality score? ▼
Mark Horton, MD has a CMS MIPS Final Score of 78.6/100 (Quality: 75.2, Cost: 53.5). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mark Horton, MD located? ▼
Mark Horton, MD is located at 590 COURT ST, Keene, NH, 03431. Phone: (603) 354-5400.
What is Mark Horton, MD's NPI number? ▼
Mark Horton, MD's National Provider Identifier (NPI) is 1982830725, issued on 06/08/2009.
Does Mark Horton, MD prescribe more brand-name or generic drugs? ▼
Mark Horton, MD's prescribing is 5% brand-name and 95% generic drugs by claim count, with $1K in brand drug costs.
Does Mark Horton, MD prescribe opioids? ▼
Yes, Mark Horton, MD had 163 opioid claims in 2023 with an opioid prescribing rate of 39.1%.
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 Mark Horton, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Mark Horton, MD's most frequently prescribed drugs include Gabapentin, Pregabalin, Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Horton, MD accept Medicare? ▼
Mark Horton, MD appears in CMS Medicare data with 417 Part D claims and 85 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Horton, MD's credentials? ▼
Mark Horton, MD's NPI is 1982830725 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
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.