NPI registry status
Active
2026 NPPES data Periodontics NPI 1043597214 D.M.D.
Verify on CMS → Christopher Drennen, D.M.D.
Periodontics in Potomac, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,062 in Periodontics, 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
48
Medicare Part D claims · 17 beneficiaries · Periodontics avg: 264
Industry payments
$83.73
4 payments · CMS Open Payments (Sunshine Act)
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
Christopher Drennen, D.M.D. filed 48 Medicare Part D claims in 2023 as a Periodontics in Potomac, Maryland.
- 48
- Part D claims, 2023
- $83.73
- industry payments (Sunshine Act)
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.
Christopher Drennen, D.M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
48 0th percentile higher than 0% 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 Christopher Drennen, D.M.D.?
Quality data not reportedPrimary specialty
Periodontics
Medicare Part D claims
48 82% vs specialty avg
Specialty distribution in Maryland
How Periodontics compares to other specialties among Maryland 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 Periodontics. 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).
Christopher Drennen, D.M.D. appears in the CMS NPPES registry as a Periodontics provider holding D.M.D. credentials at 9800 FALLS RD STE 104, Potomac, MD, 20854, with a listed phone of (301) 299-1505. NPI 1043597214 was issued on 11/15/2011.
Medicare Part D records for calendar year 2023 show 48 prescription claims written by this provider, covering 17 Medicare beneficiaries and totaling roughly $202 in drug spend.
Periodontics is a mid-sized specialty nationwide, with 6,062 enrolled providers across 53 states and an average of 264 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 | 1043597214 |
|---|---|
| Specialty | Periodontics |
| Credentials | D.M.D. |
| Gender | Male |
| NPI Issued | 11/15/2011 |
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 Christopher Drennen, D.M.D.. Source: openpaymentsdata.cms.gov.
Total received
$84
Largest payer
Align Technology, Inc.
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
48
Total Claims
$202
Total Drug Cost
17
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 48
- Total Day Supply
- 530
- Brand Drug Cost
- $0
- Generic Drug Cost
- $202
- Antibiotic Claims
- 18
Patient Demographics
- Average Patient Age
- 74.8 years
- Avg HCC Risk Score
- 0.98
- Age Distribution
- <65: 0, 65-74: N/A, 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 Christopher Drennen, D.M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ibuprofen
Ibuprofen
16 claims
- Amoxicillin
Amoxicillin
14 claims
- Chlorhexidine Gluc…
Chlorhexidine Gluconate
14 claims
| Drug | Claims |
|---|---|
| Ibuprofen | 16 |
| Amoxicillin | 14 |
| Chlorhexidine Gluconate | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Periodontics Overview
How Christopher Drennen, D.M.D. fits within the Periodontics landscape nationally.
6,062
Periodontics Providers in US
53
States with Periodontics
264
Avg Claims per Provider
Christopher Drennen, D.M.D.'s 48 claims are below the specialty average of 264.
Nearby Periodontics Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Drennen.
Dr. Mary Aichelmann-Reidy
DDS
Baltimore, MD
Dr. Mary Alexander
DDS
Silver Spring, MD
Dr. Reiaz Ali
D.D.S., M.S.
Clinton, MD
Dr. Augusto Araujo
D.M.D.
Chevy Chase, MD
Dr. Judith Austin
D.M.D.
Rockville, MD
Compare Periodontics 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 Maryland medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Periodontics 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 Christopher Drennen, D.M.D.'s specialty? ▼
Christopher Drennen, D.M.D. specializes in Periodontics and practices in Potomac, Maryland. Credentials: D.M.D..
How much does Christopher Drennen, D.M.D. prescribe under Medicare Part D? ▼
In 2023, Christopher Drennen, D.M.D. wrote 48 Medicare Part D claims totaling $202 in drug costs for 17 beneficiaries.
Where is Christopher Drennen, D.M.D. located? ▼
Christopher Drennen, D.M.D. is located at 9800 FALLS RD STE 104, Potomac, MD, 20854. Phone: (301) 299-1505.
What is Christopher Drennen, D.M.D.'s NPI number? ▼
Christopher Drennen, D.M.D.'s National Provider Identifier (NPI) is 1043597214, issued on 11/15/2011.
How many Periodontics providers are there in the US? ▼
There are 6,062 Periodontics providers across 53 states in the US. The average Periodontics provider writes 264 Medicare Part D claims per year.
What drugs does Christopher Drennen, D.M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Christopher Drennen, D.M.D.'s most frequently prescribed drugs include Ibuprofen, Amoxicillin, Chlorhexidine Gluconate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Christopher Drennen, D.M.D. accept Medicare? ▼
Christopher Drennen, D.M.D. appears in CMS Medicare data with 48 Part D claims and 17 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christopher Drennen, D.M.D.'s credentials? ▼
Christopher Drennen, D.M.D.'s NPI is 1043597214 with credentials D.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
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.