Doctor profile · Federal record

Dr. William Zempsky, MD

Pediatrics Physician (CMS: Emergency Medicine) · Pediatric Emergency Medicine (Pediatrics) Physician · Hartford, CT

  • NPI 1508832650
  • Accepts Medicare
  • 38 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
282 Washington St
Hartford, CT 061063322
(860) 545-9200
fax (860) 545-9134

Credentials & registration

NPPES · NUCC
NPI registered
February 2006 — 20 yrs on file
Profile last updated
September 23, 2022
Year of graduation
1988 — 38 yrs since
Specialty taxonomy
208000000X — NUCC code
State license (1)
Connecticut #035940
Medicaid
CT #001359406

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1508832650. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$7,880
Transactions
4
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
H. Lundbeck A S 3 $7,380.00
Endo USA, INC. 1 $500.00

By nature of payment

Honoraria
$7,380
Consulting Fee
$500

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
11
Patients
0
Total drug cost
$175
Drug Type Claims Patients Total cost
Baclofen Generic 11 0 $175

Frequently asked questions

Auto-generated from federal data
What is Dr. William Zempsky's medical specialty?
Dr. William Zempsky practices Pediatrics Physician in Hartford, CT.
Where does Dr. William Zempsky practice?
Dr. William Zempsky practices at 282 Washington St, Hartford, CT 061063322. Office phone: 8605459200.
What is Dr. William Zempsky's NPI?
Dr. William Zempsky's National Provider Identifier (NPI) is 1508832650, issued by NPPES.
Does Dr. William Zempsky accept Medicare assignment?
Yes. Dr. William Zempsky accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.