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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. WILLIAM D RIFKIN MD
NPI 1093789810
Internal Medicine in Waterbury, CT

Active since February 16, 2006
140 GRANDVIEW AVE, SUITE #101, WATERBURY, CT 06708(203) 573-7284(203) 573-7031 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. William D Rifkin Md NPPES

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

DR. WILLIAM D RIFKIN MD (NPI 1093789810) is an individual internal medicine provider in Waterbury, Connecticut, licensed in Connecticut (041451) and active in the NPI registry since February 2006.

NPPES Registry Identity

NPI1093789810
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. WILLIAM D RIFKINCredential: MD
Location Address140 GRANDVIEW AVE, SUITE #101Waterbury, CT 06708-2505
Mailing Address1625 Straits Tpke, Suite #201Middlebury, CT 06762-1805 · (203) 573-9512 · Fax (203) 568-2904
Phone(203) 573-7284
Fax(203) 573-7031
Sole ProprietorNo
Enumeration DateFebruary 16, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1093789810 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CT · 041451
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.
140 GRANDVIEW AVE, Waterbury, CT 06708
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Other Providers at the Same Location NPPES 20

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

GIRVICE ARCHER M.D
Anesthesiology
140 GRANDVIEW AVE
WATERBURY, CT 06708
Naugatuck Valley Planning Region (203) 757-7000
DR. LYDIA AOUN-BARAKAT MD
Internal Medicine (Infectious Disease)
140 GRANDVIEW AVE, SUITE #L01
WATERBURY, CT 06708
Naugatuck Valley Planning Region (203) 574-4187
GARY POUPKO M.D
Anesthesiology
140 GRANDVIEW AVE
WATERBURY, CT 06708
Naugatuck Valley Planning Region (203) 757-7000
DR. MAJID SADIGH MD
Internal Medicine (Infectious Disease)
140 GRANDVIEW AVE, SUITE #101
WATERBURY, CT 06708
Naugatuck Valley Planning Region (203) 573-7284
JOSEPH ROCCO
Nurse Anesthetist, Certified Registered
140 GRANDVIEW AVE
WATERBURY, CT 06708
Naugatuck Valley Planning Region (203) 757-7000
JANET L VODRA MD
Obstetrics & Gynecology
140 GRANDVIEW AVE, SUITE 202
WATERBURY, CT 06708
Naugatuck Valley Planning Region (203) 755-2344
RAYMOND CLEMENT M.D
Anesthesiology
140 GRANDVIEW AVE
WATERBURY, CT 06708
Naugatuck Valley Planning Region (203) 757-7000
DR. MEGHAN MARIE SLEMMENS M.D.
Obstetrics & Gynecology
140 GRANDVIEW AVE
WATERBURY, CT 06708
Naugatuck Valley Planning Region (203) 755-2344

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 Rifkin's NPI number?

The NPI number for William Rifkin is 1093789810. It was assigned to this individual provider in the NPPES registry on February 16, 2006.

Where is William Rifkin located?

William Rifkin practices at 140 Grandview Ave Suite #101, Waterbury, CT 06708. The listed phone number is (203) 573-7284.

What is William Rifkin'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 Rifkin was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.