NPI registry status
Active
2026 NPPES data Neurological Surgery Physician NPI 1376980649 MD
Verify on CMS → Samantha Dayawansa, MD
Neurological Surgery Physician in Nacogdoches, Texas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 8,100 in Neurological 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
132
Medicare Part D claims · 56 beneficiaries · Neurological Surgery Physician avg: 181
Industry payments
$416.43
8 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Samantha Dayawansa, MD filed 132 Medicare Part D claims in 2023 as a Neurological Surgery Physician in Nacogdoches, Texas.
- 132
- 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.
Samantha Dayawansa, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
132 35th percentile higher than 35% 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)
Samantha Dayawansa, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 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 Samantha Dayawansa, MD?
Quality data not reportedPrimary specialty
Neurological Surgery Physician
Medicare Part D claims
132 27% vs specialty avg
Specialty distribution in Texas
How Neurological Surgery Physician compares to other specialties among Texas 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 Neurological 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).
Samantha Dayawansa, MD appears in the CMS NPPES registry as a Neurological Surgery Physician provider holding MD credentials at 5500 NORTH ST, Nacogdoches, TX, 75965, with a listed phone of (936) 560-6999. NPI 1376980649 was issued on 05/28/2013.
Medicare Part D records for calendar year 2023 show 132 prescription claims written by this provider, covering 56 Medicare beneficiaries and totaling roughly $2K in drug spend, with an opioid prescribing rate of 18.9%.
Neurological Surgery Physician is a mid-sized specialty nationwide, with 8,100 enrolled providers across 53 states and an average of 181 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 | 1376980649 |
|---|---|
| Specialty | Neurological Surgery Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/28/2013 |
Hospital and facility affiliations
Facilities where Samantha Dayawansa, 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.
According to CMS billing records, Samantha Dayawansa, MD is affiliated with 3 Medicare-billing facilities across 3 states.
Archbold Medical Group, Inc.
Thomasville, GA
Bhs Physicians Network, Inc
Nacogdoches, TX
Parkview Health System Inc
Fort Wayne, IN
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 Samantha Dayawansa, MD. Source: openpaymentsdata.cms.gov.
Total received
$416
Largest payer
Nevro Corp.
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.
License & disciplinary context - Texas TMB 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~77K Texas medical licensees in 2023 - they are NOT specific to Samantha Dayawansa, MD. To verify Samantha Dayawansa, MD's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases
TMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
132
Total Claims
$2K
Total Drug Cost
56
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 134
- Total Day Supply
- 1,717
- Generic Drug Cost
- $2K
- Opioid Claims
- 25 (18.9% rate)
- Antibiotic Claims
- 19
Patient Demographics
- Average Patient Age
- 66.1 years
- Avg HCC Risk Score
- 2.10
- Gender Split
- 48% female / 52% male
- Age Distribution
- <65: 24, 65-74: 16, 75-84: 16, 85+: 0
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Samantha Dayawansa, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Cyclobenzaprine Hcl
Cyclobenzaprine Hcl
28 claims
- Methylprednisolone
Methylprednisolone
21 claims
- Mupirocin
Mupirocin
19 claims
- Cephalexin 11
Cephalexin
11 claims
| Drug | Claims |
|---|---|
| Cyclobenzaprine Hcl | 28 |
| Methylprednisolone | 21 |
| Mupirocin | 19 |
| Cephalexin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurological Surgery Physician Overview
How Samantha Dayawansa, MD fits within the Neurological Surgery Physician landscape nationally.
8,100
Neurological Surgery Physician Providers in US
53
States with Neurological Surgery Physician
181
Avg Claims per Provider
Samantha Dayawansa, MD's 132 claims are below the specialty average of 181.
Nearby Neurological Surgery Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Dayawansa.
Dr. Gareth Adams
MD
The Woodlands, TX
Dr. Dare Adewumi
M.D.
Fort Worth, TX
Dr. Osama Ahmed
MD
Live Oak, TX
Dr. Nicholas Ahye
M.D.
Houston, TX
Dr. Olaide Ajayi
MD
Fort Worth, TX
Compare Neurological Surgery 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 Texas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Neurological 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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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Samantha Dayawansa, MD's specialty? ▼
Samantha Dayawansa, MD specializes in Neurological Surgery Physician and practices in Nacogdoches, Texas. Credentials: MD.
How much does Samantha Dayawansa, MD prescribe under Medicare Part D? ▼
In 2023, Samantha Dayawansa, MD wrote 132 Medicare Part D claims totaling $2K in drug costs for 56 beneficiaries.
Where is Samantha Dayawansa, MD located? ▼
Samantha Dayawansa, MD is located at 5500 NORTH ST, Nacogdoches, TX, 75965. Phone: (936) 560-6999.
What is Samantha Dayawansa, MD's NPI number? ▼
Samantha Dayawansa, MD's National Provider Identifier (NPI) is 1376980649, issued on 05/28/2013.
Does Samantha Dayawansa, MD prescribe opioids? ▼
Yes, Samantha Dayawansa, MD had 25 opioid claims in 2023 with an opioid prescribing rate of 18.9%.
How many Neurological Surgery Physician providers are there in the US? ▼
There are 8,100 Neurological Surgery Physician providers across 53 states in the US. The average Neurological Surgery Physician provider writes 181 Medicare Part D claims per year.
What drugs does Samantha Dayawansa, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Samantha Dayawansa, MD's most frequently prescribed drugs include Cyclobenzaprine Hcl, Methylprednisolone, Mupirocin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Samantha Dayawansa, MD accept Medicare? ▼
Samantha Dayawansa, MD appears in CMS Medicare data with 132 Part D claims and 56 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Samantha Dayawansa, MD's credentials? ▼
Samantha Dayawansa, MD's NPI is 1376980649 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.
- 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.