2026 NPPES data Oral & Maxillofacial Surgery (D.M.D.) NPI 1356448344 M.D.
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WILLIAM POWELL, M.D.

Oral & Maxillofacial Surgery (D.M.D.) in HINSDALE, Illinois. 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.
What the federal data reveals: WILLIAM POWELL, M.D. is a Oral & Maxillofacial Surgery (D.M.D.) ([object Object]) practicing in HINSDALE, Illinois .

What stands out: WILLIAM POWELL, M.D. specializes in Oral & Maxillofacial Surgery (D.M.D.) and practices in HINSDALE, Illinois, listed in the federal CMS National Provider Identifier registry. Every detail on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

WILLIAM POWELL, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

WILLIAM POWELL, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 09/20/2006

NPI 1356448344

Primary specialty

Oral & Maxillofacial Surgery (D.M.D.)

Niche

1,112 US NPIs in this specialty

Specialty distribution in Illinois

How Oral & Maxillofacial Surgery (D.M.D.) compares to other specialties among Illinois providers

Illinois providers

Oral & Maxillofacial Surgery (D.M.D.) share within Illinois

1. Oral & Maxillofacial Surgery (D.M.D.)42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Oral & Maxillofacial Surgery (D.M.D.) share within Illinois

Specialty board-certification context

Estimated specialty board-certified rate — Oral & Maxillofacial Surgery (D.M.D.) (ABMS / AOA reference)

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

Est. board-certified rate (Oral & Maxillofacial Surgery (D.M.D.)) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Oral & Maxillofacial Surgery (D.M.D.)) — 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 POWELL, M.D. is a Oral & Maxillofacial Surgery (D.M.D.) provider practicing in HINSDALE, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1356448344. 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 POWELL, M.D. appears in the CMS NPPES registry as a Oral & Maxillofacial Surgery (D.M.D.) provider holding M.D. credentials at 318 S WASHINGTON ST, HINSDALE, IL, 60521, with a listed phone of (630) 654-8723. NPI 1356448344 was issued on 09/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what POWELL 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 prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal — many Oral & Maxillofacial Surgery (D.M.D.) providers operate outside Part D entirely.

Oral & Maxillofacial Surgery (D.M.D.) is a narrow specialty nationwide, with 1,112 enrolled providers across 52 states and an average of 324 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

318 S WASHINGTON ST
HINSDALE, IL 60521

Provider Details

NPI 1356448344
Specialty Oral & Maxillofacial Surgery (D.M.D.)
Credentials M.D.
Gender Male
NPI Issued 09/20/2006

License & disciplinary context — Illinois IDFPR 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 — they are NOT specific to WILLIAM POWELL, M.D.. To verify WILLIAM POWELL, M.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases

IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Oral & Maxillofacial Surgery (D.M.D.) Overview

How WILLIAM POWELL, M.D. fits within the Oral & Maxillofacial Surgery (D.M.D.) landscape nationally.

1,112
Oral & Maxillofacial Surgery (D.M.D.) Providers in US
52
States with Oral & Maxillofacial Surgery (D.M.D.)
324
Avg Claims per Provider

Nearby Oral & Maxillofacial Surgery (D.M.D.) Providers in Illinois

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

Compare Oral & Maxillofacial Surgery (D.M.D.) nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM POWELL, M.D.'s specialty?
WILLIAM POWELL, M.D. specializes in Oral & Maxillofacial Surgery (D.M.D.) and practices in HINSDALE, Illinois. Credentials: M.D..
Where is WILLIAM POWELL, M.D. located?
WILLIAM POWELL, M.D. is located at 318 S WASHINGTON ST, HINSDALE, IL, 60521. Phone: (630) 654-8723.
What is WILLIAM POWELL, M.D.'s NPI number?
WILLIAM POWELL, M.D.'s National Provider Identifier (NPI) is 1356448344, issued on 09/20/2006.
How many Oral & Maxillofacial Surgery (D.M.D.) providers are there in the US?
There are 1,112 Oral & Maxillofacial Surgery (D.M.D.) providers across 52 states in the US. The average Oral & Maxillofacial Surgery (D.M.D.) provider writes 324 Medicare Part D claims per year.
Does WILLIAM POWELL, M.D. accept Medicare?
WILLIAM POWELL, M.D. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM POWELL, M.D.'s credentials?
WILLIAM POWELL, M.D.'s NPI is 1356448344 with credentials 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

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.
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