NPI registry status
Active
2026 NPPES data Oral and Maxillofacial Surgery (Dentist) NPI 1801001516 DMD, MD
Verify on CMS → David Dieu, DMD, MD
Oral and Maxillofacial Surgery (Dentist) in Wilmington, Delaware.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,631 in Oral and Maxillofacial Surgery (Dentist), 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
309
Medicare Part D claims · 169 beneficiaries · Oral and Maxillofacial Surgery (Dentist) avg: 378
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
David Dieu, DMD, MD filed 309 Medicare Part D claims in 2023 as a Oral and Maxillofacial Surgery (Dentist) in Wilmington, Delaware.
- 309
- 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.
David Dieu, DMD, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
309 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
What does the federal data show about David Dieu, DMD, MD?
Quality data not reportedPrimary specialty
Oral and Maxillofacial Surgery (Dentist)
Medicare Part D claims
309 18% vs specialty avg
Specialty distribution in Delaware
How Oral and Maxillofacial Surgery (Dentist) compares to other specialties among Delaware 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 Surgery (Dentist). 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).
David Dieu, DMD, MD appears in the CMS NPPES registry as a Oral and Maxillofacial Surgery (Dentist) provider holding DMD, MD credentials at 1202 FOULK ROAD, Wilmington, DE, 19803, with a listed phone of (302) 273-8300. NPI 1801001516 was issued on 05/14/2007.
Medicare Part D records for calendar year 2023 show 309 prescription claims written by this provider, covering 169 Medicare beneficiaries and totaling roughly $1K in drug spend.
Oral and Maxillofacial Surgery (Dentist) is a mid-sized specialty nationwide, with 7,631 enrolled providers across 52 states and an average of 378 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 | 1801001516 |
|---|---|
| Specialty | Oral and Maxillofacial Surgery (Dentist) |
| Credentials | DMD, MD |
| Gender | Male |
| NPI Issued | 05/14/2007 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
309
Total Claims
$1K
Total Drug Cost
169
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 309
- Total Day Supply
- 1,834
- Brand Drug Cost
- $0
- Generic Drug Cost
- $1K
- Antibiotic Claims
- 183
Patient Demographics
- Average Patient Age
- 67.2 years
- Avg HCC Risk Score
- 1.17
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 43, 65-74: 79, 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 David Dieu, DMD, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amoxicillin
Amoxicillin
140 claims
- Ibuprofen
Ibuprofen
110 claims
- Clindamycin Hcl 40
Clindamycin Hcl
40 claims
| Drug | Claims |
|---|---|
| Amoxicillin | 140 |
| Ibuprofen | 110 |
| Clindamycin Hcl | 40 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Oral and Maxillofacial Surgery (Dentist) in DE →
All providers in Delaware →
Compare specialties →
Oral and Maxillofacial Surgery (Dentist) Overview
How David Dieu, DMD, MD fits within the Oral and Maxillofacial Surgery (Dentist) landscape nationally.
7,631
Oral and Maxillofacial Surgery (Dentist) Providers in US
52
States with Oral and Maxillofacial Surgery (Dentist)
378
Avg Claims per Provider
David Dieu, DMD, MD's 309 claims are below the specialty average of 378.
Nearby Oral and Maxillofacial Surgery (Dentist) Providers in Delaware
Other clinicians with the same primary specialty enrolled in Delaware, drawn from the same CMS NPPES roster as Dieu.
Dr. Nicholas Alcorn
D.M.D.
Dover, DE
Habib Asmaro
Newark, DE
Dr. Barry Boyd
DMD, MD
Wilmington, DE
Dr. Michael Cahoon
DMD
Lewes, DE
Dr. Conor Campbell
DMD
Wilmington, DE
Compare Oral and Maxillofacial Surgery (Dentist) 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 Delaware 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 Surgery (Dentist) 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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How to Find a Doctor
Step-by-step guide to choosing a provider
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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
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Delaware
Frequently Asked Questions
What is David Dieu, DMD, MD's specialty? ▼
David Dieu, DMD, MD specializes in Oral and Maxillofacial Surgery (Dentist) and practices in Wilmington, Delaware. Credentials: DMD, MD.
How much does David Dieu, DMD, MD prescribe under Medicare Part D? ▼
In 2023, David Dieu, DMD, MD wrote 309 Medicare Part D claims totaling $1K in drug costs for 169 beneficiaries.
Where is David Dieu, DMD, MD located? ▼
David Dieu, DMD, MD is located at 1202 FOULK ROAD, Wilmington, DE, 19803. Phone: (302) 273-8300.
What is David Dieu, DMD, MD's NPI number? ▼
David Dieu, DMD, MD's National Provider Identifier (NPI) is 1801001516, issued on 05/14/2007.
How many Oral and Maxillofacial Surgery (Dentist) providers are there in the US? ▼
There are 7,631 Oral and Maxillofacial Surgery (Dentist) providers across 52 states in the US. The average Oral and Maxillofacial Surgery (Dentist) provider writes 378 Medicare Part D claims per year.
What drugs does David Dieu, DMD, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, David Dieu, DMD, MD's most frequently prescribed drugs include Amoxicillin, Ibuprofen, Clindamycin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Dieu, DMD, MD accept Medicare? ▼
David Dieu, DMD, MD appears in CMS Medicare data with 309 Part D claims and 169 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Dieu, DMD, MD's credentials? ▼
David Dieu, DMD, MD's NPI is 1801001516 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.