NPI registry status
Active
2026 NPPES data Prosthodontics NPI 1588910996 DMD
Verify on CMS → John Chamberlain, DMD
Prosthodontics in Bethesda, 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 3,510 in Prosthodontics, 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
119
Medicare Part D claims · 45 beneficiaries · Prosthodontics avg: 85
Industry payments
$1.3K
14 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
John Chamberlain, DMD filed 119 Medicare Part D claims in 2023 as a Prosthodontics in Bethesda, Maryland.
- 119
- Part D claims, 2023
- $1.3K
- 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.
John Chamberlain, DMD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
119 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 John Chamberlain, DMD?
Quality data not reportedPrimary specialty
Prosthodontics
Medicare Part D claims
119 40% vs specialty avg
Specialty distribution in Maryland
How Prosthodontics 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 Prosthodontics. 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).
John Chamberlain, DMD appears in the CMS NPPES registry as a Prosthodontics provider holding DMD credentials at NAVAL POSTGRADUATE DENTAL SCHOOL, Bethesda, MD, 20889, with a listed phone of (301) 295-1550. NPI 1588910996 was issued on 08/03/2012.
Medicare Part D records for calendar year 2023 show 119 prescription claims written by this provider, covering 45 Medicare beneficiaries and totaling roughly $1K in drug spend.
Prosthodontics is a narrow specialty nationwide, with 3,510 enrolled providers across 51 states and an average of 85 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 | 1588910996 |
|---|---|
| Specialty | Prosthodontics |
| Credentials | DMD |
| Gender | Male |
| NPI Issued | 08/03/2012 |
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 John Chamberlain, DMD. Source: openpaymentsdata.cms.gov.
Total received
$1.3K
Largest payer
ZIMVIE 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.
119
Total Claims
$1K
Total Drug Cost
45
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 127
- Total Day Supply
- 2,239
- Generic Drug Cost
- $1K
- Antibiotic Claims
- 36
Patient Demographics
- Average Patient Age
- 70.8 years
- Avg HCC Risk Score
- 1.20
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Chamberlain, DMD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Dexamethasone
Dexamethasone
32 claims
- Amoxicillin
Amoxicillin
25 claims
- Nystatin
Nystatin
25 claims
| Drug | Claims |
|---|---|
| Dexamethasone | 32 |
| Amoxicillin | 25 |
| Nystatin | 25 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Prosthodontics Overview
How John Chamberlain, DMD fits within the Prosthodontics landscape nationally.
3,510
Prosthodontics Providers in US
51
States with Prosthodontics
85
Avg Claims per Provider
John Chamberlain, DMD's 119 claims are above the specialty average of 85.
Nearby Prosthodontics Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Chamberlain.
Dr. Laleh Abdolazadeh
DDS
Bethesda, MD
Dr. Robert Andrews
DDS
Annapolis, MD
Dr. Marvin Baer
DDS
Fallston, MD
Dr. Arezoo Bahar
DDS
Annapolis, MD
Dr. Lukman Beckles
D.D.S.,M.S.
Silver Spring, MD
Compare Prosthodontics 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 Prosthodontics 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
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
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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 Maryland
Frequently Asked Questions
What is John Chamberlain, DMD's specialty? ▼
John Chamberlain, DMD specializes in Prosthodontics and practices in Bethesda, Maryland. Credentials: DMD.
How much does John Chamberlain, DMD prescribe under Medicare Part D? ▼
In 2023, John Chamberlain, DMD wrote 119 Medicare Part D claims totaling $1K in drug costs for 45 beneficiaries.
Where is John Chamberlain, DMD located? ▼
John Chamberlain, DMD is located at NAVAL POSTGRADUATE DENTAL SCHOOL, Bethesda, MD, 20889. Phone: (301) 295-1550.
What is John Chamberlain, DMD's NPI number? ▼
John Chamberlain, DMD's National Provider Identifier (NPI) is 1588910996, issued on 08/03/2012.
How many Prosthodontics providers are there in the US? ▼
There are 3,510 Prosthodontics providers across 51 states in the US. The average Prosthodontics provider writes 85 Medicare Part D claims per year.
What drugs does John Chamberlain, DMD prescribe most often? ▼
Based on 2023 Medicare Part D data, John Chamberlain, DMD's most frequently prescribed drugs include Dexamethasone, Amoxicillin, Nystatin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Chamberlain, DMD accept Medicare? ▼
John Chamberlain, DMD appears in CMS Medicare data with 119 Part D claims and 45 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Chamberlain, DMD's credentials? ▼
John Chamberlain, DMD's NPI is 1588910996 with credentials DMD. 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.