Doctor profile · Federal record

Dr. Tammy Lo, ACNP

Acute Care Nurse Practitioner · Greenwich, CT

  • NPI 1740595792
  • 16 yrs on file
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
25 Valley Dr
Greenwich, CT 068315203
(203) 661-3333
fax (203) 661-5610
Mailing address
25 Hickory Dr
Westport, CT 068803807

Credentials & registration

NPPES · NUCC
NPI registered
August 2010 — 16 yrs on file
Profile last updated
December 16, 2016
Specialty taxonomy
363LA2100X — NUCC code
State license (1)
Connecticut #5568

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1740595792. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$1,997
Transactions
82
Manufacturers
15
Payer (manufacturer) Industry Txns Amount
Celgene Corporation 13 $246.52
Abbvie INC. 10 $228.86
Novartis Pharmaceuticals Corporation 11 $204.81
Rigel Pharmaceuticals, INC. 9 $172.66
E.R. Squibb & Sons, L.L.C. 8 $147.09
Genentech USA, INC. 4 $105.90
Array Biopharma INC 4 $93.57
AstraZeneca Pharmaceuticals Lp 4 $81.88
Eisai INC. 3 $79.01
Mirati Therapeutics, INC. 3 $69.43
Incyte Corporation 3 $58.48
Bayer Healthcare Pharmaceuticals INC. 3 $57.67
Astellas Pharma US INC 2 $55.51
Regeneron Healthcare Solutions, INC. 3 $53.00
Lilly USA, LLC 2 $52.61

By nature of payment

Food and Beverage
$1,997

Frequently asked questions

Auto-generated from federal data
What is Dr. Tammy Lo's medical specialty?
Dr. Tammy Lo practices Acute Care Nurse Practitioner in Greenwich, CT.
Where does Dr. Tammy Lo practice?
Dr. Tammy Lo practices at 25 Valley Dr, Greenwich, CT 068315203. Office phone: 2036613333.
What is Dr. Tammy Lo's NPI?
Dr. Tammy Lo's National Provider Identifier (NPI) is 1740595792, issued by NPPES.