Doctor profile · Federal record

Dr. Stephen Pentheros, NP

Adult Health Nurse Practitioner (CMS: Nurse Practitioner) · Licensed Practical Nurse · Riverhead, NY

  • NPI 1578840393
  • Accepts Medicare
  • 5 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
750 Old Country RD Bldg 2
Riverhead, NY 119012153
(631) 751-3000
fax (631) 751-0506
Mailing address
1500 Route 112 Bldg 4
Port Jefferson Station, NY 117768055

Credentials & registration

NPPES · NUCC
NPI registered
November 2011 — 15 yrs on file
Profile last updated
October 14, 2021
Year of graduation
2021 — 5 yrs since
Specialty taxonomy
363LA2200X — NUCC code
State licenses (2)
New York #310357 · New York #306726-1

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1578840393. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$430
Transactions
8
Manufacturers
4
Payer (manufacturer) Industry Txns Amount
Gilead Sciences, Inc. 5 $158.23
AstraZeneca Pharmaceuticals LP 1 $125.00
SOBI, INC 1 $125.00
Alnylam Pharmaceuticals Inc. 1 $21.63

By nature of payment

Food and Beverage
$430

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
102
Patients
0
Total drug cost
$13,741
Drug Type Claims Patients Total cost
Omeprazole Generic 19 0 $193
Alprazolam Generic 15 0 $144
Eliquis (Apixaban) Brand 14 0 $12,135
Hydroxyurea Generic 14 0 $532
Ondansetron Hcl Generic 14 0 $216
Oxycodone Hcl Generic 14 0 $450
Prednisone Generic 12 0 $72

Frequently asked questions

Auto-generated from federal data
What is Dr. Stephen Pentheros's medical specialty?
Dr. Stephen Pentheros practices Adult Health Nurse Practitioner in Riverhead, NY.
Where does Dr. Stephen Pentheros practice?
Dr. Stephen Pentheros practices at 750 Old Country RD Bldg 2, Riverhead, NY 119012153. Office phone: 6317513000.
What is Dr. Stephen Pentheros's NPI?
Dr. Stephen Pentheros's National Provider Identifier (NPI) is 1578840393, issued by NPPES.
Does Dr. Stephen Pentheros accept Medicare assignment?
Yes. Dr. Stephen Pentheros accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.