DR. WILLIAM J. CASSIDY M.D.
NPI 1114959384
Internal Medicine in Annapolis, MD

Active since July 07, 2006
820 BESTGATE ROAD, SUITE 2A, ANNAPOLIS, MD 21401(410) 224-2116(410) 224-2118 Get Directions Write a Review

NPPES record last updated: April 12, 2012. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. William J. Cassidy M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM J. CASSIDY M.D. (NPI 1114959384) is an individual internal medicine provider in Annapolis, Maryland, licensed in Maryland (D0019120) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1114959384
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. WILLIAM J. CASSIDYCredential: M.D.
Location Address820 BESTGATE ROAD, SUITE 2AAnnapolis, MD 21401
Mailing Address820 Bestgate Road, Suite 2bAnnapolis, MD 21401 · (410) 224-2116 · Fax (410) 224-2118
Fax(410) 224-2118
Sole ProprietorNo
Enumeration DateJuly 7, 2006
Last NPPES UpdateApril 12, 2012
NPI 1114959384 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in MD · D0019120
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
820 BESTGATE ROAD, Annapolis, MD 21401

Other Identifiers 3

Medicare PINH425L525MD
Medicare UPIND73757MD
Medicaid118231500MD

Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Internal Medicine (Gastroenterology)
820 BESTGATE ROAD, SUITE 2A
ANNAPOLIS, MD 21401
Internal Medicine (Gastroenterology)
820 BESTGATE ROAD, SUITE 2A
ANNAPOLIS, MD 21401
Internal Medicine (Gastroenterology)
820 BESTGATE ROAD, SUITE 2A
ANNAPOLIS, MD 21401
Internal Medicine (Gastroenterology)
820 BESTGATE ROAD, SUITE 2A
ANNAPOLIS, MD 21401
Internal Medicine (Gastroenterology)
820 BESTGATE ROAD, SUITE 2A
ANNAPOLIS, MD 21401
Internal Medicine (Gastroenterology)
820 BESTGATE ROAD, SUITE 2A
ANNAPOLIS, MD 21401
Internal Medicine (Gastroenterology)
820 BESTGATE ROAD, SUITE 2A
ANNAPOLIS, MD 21401
Internal Medicine (Gastroenterology)
820 BESTGATE ROAD, SUITE 2A
ANNAPOLIS, MD 21401

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Cassidy's NPI number?

The NPI number for William Cassidy is 1114959384. It was assigned to this individual provider in the NPPES registry on July 7, 2006.

Where is William Cassidy located?

William Cassidy practices at 820 Bestgate Road Suite 2A, Annapolis, MD 21401. The listed phone number is (410) 224-2116.

What is William Cassidy's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for William Cassidy was last updated on April 12, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.