William Brennan, MD

Cardiology · Orthopedic Surgery · Psychiatry

21+ years in practiceNPI: 1700861028Licensed in ME

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Credentials & Recognition

Specialties

CardiologyOrthopedic SurgeryPsychiatry

NPI sub-specialties

Psychiatry & Neurology, Psychiatry2084P0800X

Practice Signals

Editorial signals beyond credentials. Patient transparency over opacity. See methodology.

Mid-Level (PA/NP) Use

Doctor-led visits

Years in Practice

21+ years

Estimated from NPI enumeration date

Featured in PBCMMG Rankings

#3

Top Psychiatrists in Maine, 2026

Psychiatry · Maine · 2026

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Frequently Asked Questions about Dr. William Brennan, MD

Where does Dr. William Brennan, MD practice?+
Dr. William Brennan, MD practices in Washington, WA. 123 ANDOVER RD WESTBROOK, ME 040923848.
What is Dr. William Brennan, MD's phone number?+
Dr. William Brennan, MD's practice phone is 207-761-2200. Office contact information is verified on the PBCMMG profile.
What does Dr. William Brennan, MD specialize in?+
Dr. William Brennan, MD's primary specialty is Psychiatry, with additional focus on Cardiology, Orthopedic Surgery.
Is Dr. William Brennan, MD board certified?+
Board certification status for Dr. William Brennan, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. William Brennan, MD been practicing?+
Dr. William Brennan, MD has been in active practice for 21+ years, based on NPI enumeration and state licensing records.
What is Dr. William Brennan, MD's NPI number?+
Dr. William Brennan, MD's National Provider Identifier (NPI) is 1700861028, registered in the federal NPPES registry.

Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards

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