Doctor profile · Federal record

Dr. Saowanee Ngamruengphong, MD

Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · Student in an Organized Health Care Education/Training Program · Baltimore, MD

  • NPI 1285898023
  • MIPS 75.0 / 100 · 2023
  • 21 yrs in practice
  • Licensed in 3 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
4940 Eastern Ave, A Building, 5Th Floor
Baltimore, MD 212242735
(410) 550-1793
fax (410) 550-7861

Credentials & registration

NPPES · NUCC
NPI registered
July 2008 — 18 yrs on file
Profile last updated
March 13, 2017
Year of graduation
2005 — 21 yrs since
Specialty taxonomy
207RG0100X — NUCC code
State licenses (3)
Maryland #D81862 · Florida #ME109387 · Texas #BP10032775
Medicaid (2)
FL #003733500 · MD #113054400

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1285898023. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
590
Distinct HCPCS
10
Medicare allowed
$110,521
HCPCS Description Services Patients Avg allowed
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 101 94 $71
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare 97 94 $184
45390 Removal of large bowel tissue using a flexible endoscope 72 68 $351
45380 Biopsy of large bowel using a flexible endoscope 50 49 $83
43259 Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 33 31 $210
43249 Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm 30 20 $142
43254 Removal of tissue lining of esophagus, stomach, and/or upper small bowel using a flexible endoscope 24 19 $263
99214 Established patient office or other outpatient visit, 30-39 minutes 19 19 $103
45399 Other procedure on large bowel 18 18 $327
43270 Destruction of polyp or growth of esophagus, stomach, and/or upper small bowel using a flexible endoscope 16 14 $222

In context: peer comparison

Among 49 peers in Baltimore Gastroenterology Physician, average services per provider: 49. This provider delivers 12× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$20,118
Transactions
32
Manufacturers
10
Payer (manufacturer) Industry Txns Amount
Boston Scientific Corporation 16 $16,571.21
Olympus Corporation of the Americas 2 $2,190.40
Fujifilm Healthcare Americas Corporation 1 $507.00
Braintree Laboratories, INC. 6 $290.09
Medtronic, INC. 2 $217.59
Cook Medical LLC 1 $138.17
Erbe USA INC 1 $75.00
Olympus America INC. 1 $65.60
Mallinckrodt Hospital Products INC. 1 $35.83
Takeda Pharmaceuticals U.S.A., INC. 1 $26.85

By nature of payment

Compensation for Services Other Than Consulting, Including Serving As Faculty or As A Speaker at A Venue Other Than A Continuing Education Program
$15,500
Education
$2,199
Food and Beverage
$1,610
Consulting Fee
$507
Travel and Lodging
$301

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
173
Patients
115
Total drug cost
$12,838
Drug Type Claims Patients Total cost
Peg 3350-Electrolyte (Sodium Chloride/Nahco3/Kcl/Peg) Brand 82 72 $1,906
Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) Brand 50 43 $3,868
Pantoprazole Sodium Generic 16 0 $392
Omeprazole Generic 13 0 $189
Linzess (Linaclotide) Brand 12 0 $6,484

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Saowanee Ngamruengphong's medical specialty?
Dr. Saowanee Ngamruengphong practices Gastroenterology Physician in Baltimore, MD.
Where does Dr. Saowanee Ngamruengphong practice?
Dr. Saowanee Ngamruengphong practices at 4940 Eastern Ave, Baltimore, MD 212242735. Office phone: 4105501793.
What is Dr. Saowanee Ngamruengphong's NPI?
Dr. Saowanee Ngamruengphong's National Provider Identifier (NPI) is 1285898023, issued by NPPES.
Does Dr. Saowanee Ngamruengphong accept Medicare assignment?
Dr. Saowanee Ngamruengphong does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Saowanee Ngamruengphong commonly perform?
Top Medicare-reported procedures in 2023: Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Removal of large bowel tissue using a flexible endoscope (HCPCS 45390). Source: CMS Medicare Physician & Other Practitioners file.