NPI registry status
Active
2026 NPPES data Oral and Maxillofacial Pathology Dentistry NPI 1891774162 DMD MD
Verify on CMS → Thomas Simpson, DMD MD
Oral and Maxillofacial Pathology Dentistry in Rock Hill, South Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 688 in Oral and Maxillofacial Pathology Dentistry, 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
130
Medicare Part D claims · 57 beneficiaries · Oral and Maxillofacial Pathology Dentistry avg: 303
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Thomas Simpson, DMD MD filed 130 Medicare Part D claims in 2023 as a Oral and Maxillofacial Pathology Dentistry in Rock Hill, South Carolina.
- 130
- Part D claims, 2023
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.
Thomas Simpson, DMD MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
130 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
What does the federal data show about Thomas Simpson, DMD MD?
Quality data not reportedPrimary specialty
Oral and Maxillofacial Pathology Dentistry
Medicare Part D claims
130 57% vs specialty avg
Specialty distribution in South Carolina
How Oral and Maxillofacial Pathology Dentistry compares to other specialties among South Carolina 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 Oral and Maxillofacial Pathology Dentistry. 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).
Thomas Simpson, DMD MD appears in the CMS NPPES registry as an Oral and Maxillofacial Pathology Dentistry provider holding DMD MD credentials at 372 S HERLONG AVE, Rock Hill, SC, 29732, with a listed phone of (803) 324-1160. NPI 1891774162 was issued on 01/13/2006.
Medicare Part D records for calendar year 2023 show 130 prescription claims written by this provider, covering 57 Medicare beneficiaries and totaling roughly $963 in drug spend, with an opioid prescribing rate of 29.2%.
Oral and Maxillofacial Pathology Dentistry is a narrow specialty nationwide, with 688 enrolled providers across 48 states and an average of 303 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 | 1891774162 |
|---|---|
| Specialty | Oral and Maxillofacial Pathology Dentistry |
| Credentials | DMD MD |
| Gender | Male |
| NPI Issued | 01/13/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
130
Total Claims
$963
Total Drug Cost
57
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 130
- Total Day Supply
- 838
- Generic Drug Cost
- $920
- Opioid Claims
- 38 (29.2% rate)
- Antibiotic Claims
- 44
Patient Demographics
- Average Patient Age
- 70.3 years
- Avg HCC Risk Score
- 1.28
- Gender Split
- 53% female / 47% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Thomas Simpson, DMD MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amoxicillin
Amoxicillin
31 claims
- Ibuprofen
Ibuprofen
29 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
20 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
13 claims
| Drug | Claims |
|---|---|
| Amoxicillin | 31 |
| Ibuprofen | 29 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 20 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Oral and Maxillofacial Pathology Dentistry in SC →
All providers in South Carolina →
Compare specialties →
Oral and Maxillofacial Pathology Dentistry Overview
How Thomas Simpson, DMD MD fits within the Oral and Maxillofacial Pathology Dentistry landscape nationally.
688
Oral and Maxillofacial Pathology Dentistry Providers in US
48
States with Oral and Maxillofacial Pathology Dentistry
303
Avg Claims per Provider
Thomas Simpson, DMD MD's 130 claims are below the specialty average of 303.
Nearby Oral and Maxillofacial Pathology Dentistry Providers in South Carolina
Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Simpson.
Dr. Kenneth Burtner
DMD
Fort Mill, SC
Dr. Larry Cobb
D.M.D.
Greenville, SC
Dr. Derek Dunlap
DMD
Duncan, SC
Dr. Theresa Gonzales
DMD, MS
Charleston, SC
Dr. Jonathan Lafond
D.M.D.
Summerville, SC
Compare Oral and Maxillofacial Pathology Dentistry 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 South Carolina medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Oral and Maxillofacial Pathology Dentistry 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
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
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How insurance networks affect your costs
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Explore South Carolina
Frequently Asked Questions
What is Thomas Simpson, DMD MD's specialty? ▼
Thomas Simpson, DMD MD specializes in Oral and Maxillofacial Pathology Dentistry and practices in Rock Hill, South Carolina. Credentials: DMD MD.
How much does Thomas Simpson, DMD MD prescribe under Medicare Part D? ▼
In 2023, Thomas Simpson, DMD MD wrote 130 Medicare Part D claims totaling $963 in drug costs for 57 beneficiaries.
Where is Thomas Simpson, DMD MD located? ▼
Thomas Simpson, DMD MD is located at 372 S HERLONG AVE, Rock Hill, SC, 29732. Phone: (803) 324-1160.
What is Thomas Simpson, DMD MD's NPI number? ▼
Thomas Simpson, DMD MD's National Provider Identifier (NPI) is 1891774162, issued on 01/13/2006.
Does Thomas Simpson, DMD MD prescribe opioids? ▼
Yes, Thomas Simpson, DMD MD had 38 opioid claims in 2023 with an opioid prescribing rate of 29.2%.
How many Oral and Maxillofacial Pathology Dentistry providers are there in the US? ▼
There are 688 Oral and Maxillofacial Pathology Dentistry providers across 48 states in the US. The average Oral and Maxillofacial Pathology Dentistry provider writes 303 Medicare Part D claims per year.
What drugs does Thomas Simpson, DMD MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Thomas Simpson, DMD MD's most frequently prescribed drugs include Amoxicillin, Ibuprofen, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Thomas Simpson, DMD MD accept Medicare? ▼
Thomas Simpson, DMD MD appears in CMS Medicare data with 130 Part D claims and 57 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Simpson, DMD MD's credentials? ▼
Thomas Simpson, DMD MD's NPI is 1891774162 with credentials DMD 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.
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.