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DR. MICHAEL WILLIAM DEMPSEY M.D.
NPI 1770508079
Internal Medicine in Riverhead, NY

Active since July 13, 2006
1190 OLD COUNTRY RD, RIVERHEAD, NY 11901(631) 727-1818(631) 727-7365 Get Directions Write a Review

NPPES record last updated: December 28, 2011. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Michael William Dempsey M.d. NPPES

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

DR. MICHAEL WILLIAM DEMPSEY M.D. (NPI 1770508079) is an individual internal medicine provider in Riverhead, New York, licensed in New York (130241) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1770508079
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MICHAEL WILLIAM DEMPSEYCredential: M.D.
Location Address1190 OLD COUNTRY RDRiverhead, NY 11901-4450
Mailing Address1190 Old Country RdRiverhead, NY 11901-4450 · (631) 727-1818 · Fax (631) 727-7365
Phone(631) 727-1818
Fax(631) 727-7365
Sole ProprietorYes
Enumeration DateJuly 13, 2006
Last NPPES UpdateDecember 28, 2011
✔ NPI 1770508079 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 130241
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.
1190 OLD COUNTRY RD, Riverhead, NY 11901
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Other Identifiers 3

Medicare ID-Type Unspecified319781NY
Medicare UPINB12892NY
Medicaid00417029NY

Other Providers at the Same Location NPPES 2

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

M.W.D., INC
Internal Medicine
1190 OLD COUNTRY RD
RIVERHEAD, NY 11901
Suffolk County (631) 727-1818
JANET LYNNE BALDASARE NP
Nurse Practitioner (Adult Health)
1190 OLD COUNTRY RD
RIVERHEAD, NY 11901
Suffolk County (631) 727-1818

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 Michael Dempsey's NPI number?

The NPI number for Michael Dempsey is 1770508079. It was assigned to this individual provider in the NPPES registry on July 13, 2006.

Where is Michael Dempsey located?

Michael Dempsey practices at 1190 Old Country Rd, Riverhead, NY 11901. The listed phone number is (631) 727-1818.

What is Michael Dempsey'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 Michael Dempsey was last updated on December 28, 2011. 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.