npidexNPI registry + Medicare data

ELMER CHANG, M.D.

Gastroenterology Physician · MISSION VIEJO, CA

Individual Active NPI 1912083353

Medicare payment data Part B · 2024

YearBeneficiariesServicesSubmittedAllowedPaid
20244341,341$585,450$157,688$123,141
20234441,648$1,043,310$158,320$123,071
20224352,415$1,001,475$175,914$137,031

Top procedures (2024)

HCPCSDescriptionServicesAvg allowedAvg paid
99214Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more328$136$100
45380Biopsy of large bowel using a flexible endoscope192$73$61
99213Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more149$98$72
43239Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope149$45$36
45385Removal of polyps or growths of large bowel using an endoscope with mechanical snare130$232$195
G0500Moderate 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 monito66$6$4
43249Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm64$90$69
99204New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more52$173$138
43251Removal of polyps or growths of esophagus, stomach, and/or upper small bowel using an endoscope with mechanical snare51$167$126
99203New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more47$120$88
45390Removal of large bowel tissue using a flexible endoscope17$339$285
99202New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more14$79$58

Taxonomy & licensure

SpecialtyCodePrimaryLicenseState
Gastroenterology Physician207RG0100X✓A75579CA

Medicare eligibility

Part B
Yes
DME
Yes
Home health
Yes
Power mobility
Yes
Hospice
Yes

Other Gastroenterology Physician providers in California

See all Gastroenterology Physician providers in California →

Source: NPPES (public domain) and CMS Medicare Physician & Other Practitioners data. Not affiliated with CMS, NPPES, or any government agency.