2026 NPPES data Oral and Maxillofacial Surgery (Dentist) NPI 1578613592 D.D.S.,P.C.
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WILLIAM DZYAK, D.D.S.,P.C.

Oral and Maxillofacial Surgery (Dentist) in KENSINGTON, 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
239
Medicare Part D claims · 104 beneficiaries · Oral and Maxillofacial Surgery (Dentist) avg: 378
What the federal data reveals: WILLIAM DZYAK, D.D.S.,P.C. is a Oral and Maxillofacial Surgery (Dentist) ([object Object]) practicing in KENSINGTON, Maryland with a Medicare Part D prescribing footprint of 239 claims across 104 beneficiaries .

What stands out: WILLIAM DZYAK, D.D.S.,P.C. filed 239 Medicare Part D claims in 2023 across KENSINGTON, Maryland. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

WILLIAM DZYAK, D.D.S.,P.C. at a glance

Quality data not reported

NPI registry status

Active

Issued 01/11/2007

NPI 1578613592

Primary specialty

Oral and Maxillofacial Surgery (Dentist)

Mid-sized

7,631 US NPIs in this specialty

Medicare Part D claims

239 37% vs specialty avg

2023 prescription claims

Specialty avg: 378

Specialty distribution in Maryland

How Oral and Maxillofacial Surgery (Dentist) compares to other specialties among Maryland providers

Maryland providers

Oral and Maxillofacial Surgery (Dentist) share within Maryland

1. Oral and Maxillofacial Surgery (Dentist)42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Oral and Maxillofacial Surgery (Dentist) share within Maryland

Specialty board-certification context

Estimated specialty board-certified rate — Oral and Maxillofacial Surgery (Dentist) (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Oral and Maxillofacial Surgery (Dentist) ABMS/AOA estimate

Est. board-certified rate (Oral and Maxillofacial Surgery (Dentist)) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Oral and Maxillofacial Surgery (Dentist)) — 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).

WILLIAM DZYAK, D.D.S.,P.C. is a Oral and Maxillofacial Surgery (Dentist) provider practicing in KENSINGTON, Maryland, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.D.S.,P.C.. NPI: 1578613592. 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.

WILLIAM DZYAK, D.D.S.,P.C. appears in the CMS NPPES registry as a Oral and Maxillofacial Surgery (Dentist) provider holding D.D.S.,P.C. credentials at 10605 CONCORD ST, KENSINGTON, MD, 20895, with a listed phone of (301) 942-4900. NPI 1578613592 was issued on 01/11/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DZYAK 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 239 prescription claims written by this provider, covering 104 Medicare beneficiaries and totaling roughly $2K in drug spend, with an opioid prescribing rate of 13.8%. 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.

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

10605 CONCORD ST
KENSINGTON, MD 20895

Provider Details

NPI 1578613592
Specialty Oral and Maxillofacial Surgery (Dentist)
Credentials D.D.S.,P.C.
Gender Male
NPI Issued 01/11/2007

Medicare Part D Prescribing Data

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

239
Total Claims
$2K
Total Drug Cost
104
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
254
Total Day Supply
2,759
Generic Drug Cost
$2K
Opioid Claims
33 (13.8% rate)
Antibiotic Claims
88

Patient Demographics

Average Patient Age
72.9 years
Avg HCC Risk Score
0.91
Gender Split
63% female / 37% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Amoxicillin
70
Chlorhexidine Gluconate
45
Ondansetron Hcl
18
Clotrimazole
13
Dexamethasone
13
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
13

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Oral and Maxillofacial Surgery (Dentist) Overview

How WILLIAM DZYAK, D.D.S.,P.C. 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

WILLIAM DZYAK, D.D.S.,P.C.'s 239 claims are below the specialty average of 378.

Nearby Oral and Maxillofacial Surgery (Dentist) Providers in Maryland

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

Compare Oral and Maxillofacial Surgery (Dentist) nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM DZYAK, D.D.S.,P.C.'s specialty?
WILLIAM DZYAK, D.D.S.,P.C. specializes in Oral and Maxillofacial Surgery (Dentist) and practices in KENSINGTON, Maryland. Credentials: D.D.S.,P.C..
How much does WILLIAM DZYAK, D.D.S.,P.C. prescribe under Medicare Part D?
In 2023, WILLIAM DZYAK, D.D.S.,P.C. wrote 239 Medicare Part D claims totaling $2K in drug costs for 104 beneficiaries.
Where is WILLIAM DZYAK, D.D.S.,P.C. located?
WILLIAM DZYAK, D.D.S.,P.C. is located at 10605 CONCORD ST, KENSINGTON, MD, 20895. Phone: (301) 942-4900.
What is WILLIAM DZYAK, D.D.S.,P.C.'s NPI number?
WILLIAM DZYAK, D.D.S.,P.C.'s National Provider Identifier (NPI) is 1578613592, issued on 01/11/2007.
Does WILLIAM DZYAK, D.D.S.,P.C. prescribe opioids?
Yes, WILLIAM DZYAK, D.D.S.,P.C. had 33 opioid claims in 2023 with an opioid prescribing rate of 13.8%.
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 WILLIAM DZYAK, D.D.S.,P.C. prescribe most often?
Based on 2023 Medicare Part D data, WILLIAM DZYAK, D.D.S.,P.C.'s most frequently prescribed drugs include Amoxicillin, Chlorhexidine Gluconate, Ondansetron Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLIAM DZYAK, D.D.S.,P.C. accept Medicare?
WILLIAM DZYAK, D.D.S.,P.C. appears in CMS Medicare data with 239 Part D claims and 104 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM DZYAK, D.D.S.,P.C.'s credentials?
WILLIAM DZYAK, D.D.S.,P.C.'s NPI is 1578613592 with credentials D.D.S.,P.C.. 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