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Physician

ANN CHEN, MD

Gastroenterology

STANFORD, CA, 94305
NPI: 1003840307

Contact

Gastroenterology

STANFORD, CA

SANTA CLARA VALLEY MEDICAL CENTER

408-885-5000

scvmc.scvh.org/home

Hospital Affiliations

Search procedure prices at these hospitals only · all code types (Gastroenterology & related)

Common Procedures for Gastroenterology

ColonoscopyUpper Endoscopy (EGD)Capsule EndoscopyLiver BiopsyERCPHemorrhoid BandingPolyp RemovalEsophageal DilationPEG Tube PlacementFibroScan

Based on specialty. Actual services may vary — contact the provider's office to confirm.

MIPS Quality Score

PY 2023
80.6/100High
Quality
67.4
Promoting Interoperability
100.0
Improvement Activities
40.0
Cost
46.5

MIPS (Merit-based Incentive Payment System) scores measure quality, cost, and improvement activities. Higher is better. Learn more at qpp.cms.gov

Procedure Pricing (Medicare Data)

Based on CMS Medicare Provider Utilization data for 2023. These represent what this physician charged Medicare, not necessarily what you would pay. Compare with other physicians

ProcedureAvg ChargeMedicare AllowedMedicare PaidServices
43242
Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope
$3,008$292$23317
45380
Biopsy of large bowel using a flexible endoscope
$2,295$213$16213
45378
Diagnostic exam of large bowel using a flexible endoscope
$1,957$203$12514
43239
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope
$1,591$125$8414
43235
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope
$1,409$125$7922
99214
Established patient office or other outpatient visit, 30-39 minutes
$701$113$7429
99204
New patient office or other outpatient visit, 45-59 minutes
$666$153$10511
99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
$532$149$11733
G0500
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito
$67$6$481

Compare prices for procedures performed by Gastroenterology physicians

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Physician identity data from the NPPES NPI Registry. Last synced 3/28/2026.