2026 NPPES data General Practice Dentistry NPI 1790907939 DDS
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CALVIN CHAMBERS, DDS

General Practice Dentistry in FORESTVILLE, Maryland. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
26
Medicare Part D claims · 15 beneficiaries · General Practice Dentistry avg: 82
What the federal data reveals: CALVIN CHAMBERS, DDS is a General Practice Dentistry ([object Object]) practicing in FORESTVILLE, Maryland with a Medicare Part D prescribing footprint of 26 claims across 15 beneficiaries .

What stands out: CALVIN CHAMBERS, DDS filed 26 Medicare Part D claims in 2023 across FORESTVILLE, Maryland. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

CALVIN CHAMBERS, DDS at a glance

Quality data not reported

NPI registry status

Active

Issued 05/03/2007

NPI 1790907939

Primary specialty

General Practice Dentistry

High-volume

121,627 US NPIs in this specialty

Medicare Part D claims

26 68% vs specialty avg

2023 prescription claims

Specialty avg: 82

Specialty distribution in Maryland

How General Practice Dentistry compares to other specialties among Maryland providers

Maryland providers

General Practice Dentistry share within Maryland

1. General Practice Dentistry42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
General Practice Dentistry share within Maryland

Specialty board-certification context

Estimated specialty board-certified rate — General Practice Dentistry (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
General Practice Dentistry ABMS/AOA estimate

Est. board-certified rate (General Practice Dentistry) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (General Practice Dentistry) — ABMS / AOA estimate

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).

CALVIN CHAMBERS, DDS is a General Practice Dentistry provider practicing in FORESTVILLE, Maryland, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DDS. NPI: 1790907939. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

CALVIN CHAMBERS, DDS appears in the CMS NPPES registry as a General Practice Dentistry provider holding DDS credentials at 3420 DONNELL DR, FORESTVILLE, MD, 20747, with a listed phone of (301) 568-8522. NPI 1790907939 was issued on 05/03/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHAMBERS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 26 prescription claims written by this provider, covering 15 Medicare beneficiaries and totaling roughly $156 in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

General Practice Dentistry is a high-volume specialty nationwide, with 121,627 enrolled providers across 56 states and an average of 82 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

3420 DONNELL DR
FORESTVILLE, MD 20747

Provider Details

NPI 1790907939
Specialty General Practice Dentistry
Credentials DDS
Gender Male
NPI Issued 05/03/2007

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

26
Total Claims
$156
Total Drug Cost
15
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
26
Total Day Supply
185
Brand Drug Cost
$0
Generic Drug Cost
$156
Antibiotic Claims
16

Patient Demographics

Average Patient Age
72.9 years
Avg HCC Risk Score
0.69
Age Distribution
<65: 0, 65-74: N/A, 75-84: N/A, 85+: 0

General Practice Dentistry Overview

How CALVIN CHAMBERS, DDS fits within the General Practice Dentistry landscape nationally.

121,627
General Practice Dentistry Providers in US
56
States with General Practice Dentistry
82
Avg Claims per Provider

CALVIN CHAMBERS, DDS's 26 claims are below the specialty average of 82.

Nearby General Practice Dentistry Providers in Maryland

Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as CHAMBERS.

Compare General Practice Dentistry nationally: see state-by-state distribution →

Frequently Asked Questions

What is CALVIN CHAMBERS, DDS's specialty?
CALVIN CHAMBERS, DDS specializes in General Practice Dentistry and practices in FORESTVILLE, Maryland. Credentials: DDS.
How much does CALVIN CHAMBERS, DDS prescribe under Medicare Part D?
In 2023, CALVIN CHAMBERS, DDS wrote 26 Medicare Part D claims totaling $156 in drug costs for 15 beneficiaries.
Where is CALVIN CHAMBERS, DDS located?
CALVIN CHAMBERS, DDS is located at 3420 DONNELL DR, FORESTVILLE, MD, 20747. Phone: (301) 568-8522.
What is CALVIN CHAMBERS, DDS's NPI number?
CALVIN CHAMBERS, DDS's National Provider Identifier (NPI) is 1790907939, issued on 05/03/2007.
How many General Practice Dentistry providers are there in the US?
There are 121,627 General Practice Dentistry providers across 56 states in the US. The average General Practice Dentistry provider writes 82 Medicare Part D claims per year.
Does CALVIN CHAMBERS, DDS accept Medicare?
CALVIN CHAMBERS, DDS appears in CMS Medicare data with 26 Part D claims and 15 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CALVIN CHAMBERS, DDS's credentials?
CALVIN CHAMBERS, DDS's NPI is 1790907939 with credentials DDS. 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

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