NPI registry status
Active
2026 NPPES data Anesthesiology Physician NPI 1013259175 M.D.
Verify on CMS → Dennis Thapa, M.D.
Anesthesiology Physician in Dover, 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 56,432 in 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
391
Medicare Part D claims · 161 beneficiaries · Anesthesiology Physician avg: 860
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.4K
20 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Dennis Thapa, M.D. filed 391 Medicare Part D claims in 2023 as an Anesthesiology Physician in Dover, New Hampshire, prescribing 95% generic.
- 391
- 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.
Dennis Thapa, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
391 Top 43% higher than 57% 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)
Dennis Thapa, M.D. 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 Dennis Thapa, M.D.?
Quality data not reportedPrimary specialty
Anesthesiology Physician
Medicare Part D claims
391 55% vs specialty avg
Specialty distribution in New Hampshire
How Anesthesiology Physician compares to other specialties among New Hampshire 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 Anesthesiology 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).
Dennis Thapa, M.D. appears in the CMS NPPES registry as an Anesthesiology Physician provider holding M.D. credentials at 789 CENTRAL AVE, Dover, NH, 03820, with a listed phone of (603) 609-6819. NPI 1013259175 was issued on 03/26/2013.
Medicare Part D records for calendar year 2023 show 391 prescription claims written by this provider, covering 161 Medicare beneficiaries and totaling roughly $13K in drug spend, split 5% brand-name and 95% generic by claim count, with an opioid prescribing rate of 42.2%.
Anesthesiology Physician is a high-volume specialty nationwide, with 56,432 enrolled providers across 56 states and an average of 860 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 | 1013259175 |
|---|---|
| Specialty | Anesthesiology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/26/2013 |
Hospital and facility affiliations
Facilities where Dennis Thapa, 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.
Wentworth Douglass Physician Corporation
Portsmouth, NH
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Dennis Thapa, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.4K
Largest payer
Boston Scientific Corporation
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Generic-heavy
Dennis Thapa, M.D. - brand share 5.0%
Anesthesiology Physician average
5% brand-name claims vs 95% generic, on 391 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.
391
Total Claims
$13K
Total Drug Cost
161
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 407
- Total Day Supply
- 10,284
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $3K
- Generic Drug Cost
- $10K
- Opioid Claims
- 165 (42.2% rate)
- Antibiotic Claims
- 14
Patient Demographics
- Average Patient Age
- 66.7 years
- Avg HCC Risk Score
- 1.49
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 58, 65-74: 60, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Dennis Thapa, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
47 claims
- Oxycodone Hcl
Oxycodone Hcl
43 claims
- Tizanidine Hcl
Tizanidine Hcl
40 claims
- Tramadol Hcl
Tramadol Hcl
29 claims
- Nortriptyline Hcl
Nortriptyline Hcl
26 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
20 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
19 claims
- Nabumetone
Nabumetone
19 claims
| Drug | Claims |
|---|---|
| Gabapentin | 47 |
| Oxycodone Hcl | 43 |
| Tizanidine Hcl | 40 |
| Tramadol Hcl | 29 |
| Nortriptyline Hcl | 26 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 20 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 19 |
| Nabumetone | 19 |
| Cyclobenzaprine Hcl | 15 |
| Methadone Hcl | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Anesthesiology Physician Overview
How Dennis Thapa, M.D. fits within the Anesthesiology Physician landscape nationally.
56,432
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider
Dennis Thapa, M.D.'s 391 claims are below the specialty average of 860.
Nearby 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 Thapa.
Dr. Andrew Abatiell
M.D.
Nashua, NH
Dr. Alexander Abess
MD
Lebanon, NH
Dr. Douglas Allen
D.O.
Nashua, NH
Dr. George Allen
MD
Lebanon, NH
Dr. Shaan Alli
M.D.
Lebanon, NH
Compare 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 New Hampshire medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby 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 Dennis Thapa, M.D.'s specialty? ▼
Dennis Thapa, M.D. specializes in Anesthesiology Physician and practices in Dover, New Hampshire. Credentials: M.D..
How much does Dennis Thapa, M.D. prescribe under Medicare Part D? ▼
In 2023, Dennis Thapa, M.D. wrote 391 Medicare Part D claims totaling $13K in drug costs for 161 beneficiaries.
Where is Dennis Thapa, M.D. located? ▼
Dennis Thapa, M.D. is located at 789 CENTRAL AVE, Dover, NH, 03820. Phone: (603) 609-6819.
What is Dennis Thapa, M.D.'s NPI number? ▼
Dennis Thapa, M.D.'s National Provider Identifier (NPI) is 1013259175, issued on 03/26/2013.
Does Dennis Thapa, M.D. prescribe more brand-name or generic drugs? ▼
Dennis Thapa, M.D.'s prescribing is 5% brand-name and 95% generic drugs by claim count, with $3K in brand drug costs.
Does Dennis Thapa, M.D. prescribe opioids? ▼
Yes, Dennis Thapa, M.D. had 165 opioid claims in 2023 with an opioid prescribing rate of 42.2%.
How many Anesthesiology Physician providers are there in the US? ▼
There are 56,432 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
What drugs does Dennis Thapa, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Dennis Thapa, M.D.'s most frequently prescribed drugs include Gabapentin, Oxycodone Hcl, Tizanidine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Dennis Thapa, M.D. accept Medicare? ▼
Dennis Thapa, M.D. appears in CMS Medicare data with 391 Part D claims and 161 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Dennis Thapa, M.D.'s credentials? ▼
Dennis Thapa, M.D.'s NPI is 1013259175 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.