2026 NPPES data Anesthesiology Physician NPI 1598718363 M.D.
Verify on CMS →

WILLIAM BRIAN, M.D.

Anesthesiology Physician in HILTON HEAD ISLAND, South Carolina. 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 BRIAN, M.D. is a Anesthesiology Physician ([object Object]) practicing in HILTON HEAD ISLAND, South Carolina .

What stands out: WILLIAM BRIAN, M.D. specializes in Anesthesiology Physician and practices in HILTON HEAD ISLAND, South Carolina, 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 BRIAN, 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 BRIAN, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 05/19/2006

NPI 1598718363

Primary specialty

Anesthesiology Physician

High-volume

56,398 US NPIs in this specialty

Specialty distribution in South Carolina

How Anesthesiology Physician compares to other specialties among South Carolina providers

South Carolina providers

Anesthesiology Physician share within South Carolina

1. Anesthesiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Anesthesiology Physician share within South Carolina

Specialty board-certification context

Estimated specialty board-certified rate — Anesthesiology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Anesthesiology Physician ABMS/AOA estimate

Est. board-certified rate (Anesthesiology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Anesthesiology Physician) — 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 BRIAN, M.D. is a Anesthesiology Physician provider practicing in HILTON HEAD ISLAND, South Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1598718363. 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 BRIAN, M.D. appears in the CMS NPPES registry as a Anesthesiology Physician provider holding M.D. credentials at 222 PEMBROKE DR, HILTON HEAD ISLAND, SC, 29926, with a listed phone of (843) 682-2345. NPI 1598718363 was issued on 05/19/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BRIAN 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 Anesthesiology Physician providers operate outside Part D entirely.

Anesthesiology Physician is a high-volume specialty nationwide, with 56,398 enrolled providers across 56 states and an average of 860 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

222 PEMBROKE DR
HILTON HEAD ISLAND, SC 29926

Provider Details

NPI 1598718363
Specialty Anesthesiology Physician
Credentials M.D.
Gender Male
NPI Issued 05/19/2006

Anesthesiology Physician Overview

How WILLIAM BRIAN, M.D. fits within the Anesthesiology Physician landscape nationally.

56,398
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider

Nearby Anesthesiology Physician Providers in South Carolina

Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as BRIAN.

Compare Anesthesiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM BRIAN, M.D.'s specialty?
WILLIAM BRIAN, M.D. specializes in Anesthesiology Physician and practices in HILTON HEAD ISLAND, South Carolina. Credentials: M.D..
Where is WILLIAM BRIAN, M.D. located?
WILLIAM BRIAN, M.D. is located at 222 PEMBROKE DR, HILTON HEAD ISLAND, SC, 29926. Phone: (843) 682-2345.
What is WILLIAM BRIAN, M.D.'s NPI number?
WILLIAM BRIAN, M.D.'s National Provider Identifier (NPI) is 1598718363, issued on 05/19/2006.
How many Anesthesiology Physician providers are there in the US?
There are 56,398 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
Does WILLIAM BRIAN, M.D. accept Medicare?
WILLIAM BRIAN, 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 BRIAN, M.D.'s credentials?
WILLIAM BRIAN, M.D.'s NPI is 1598718363 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