npidexNPI registry + Medicare data

MICHAEL SHIM, M.D.

Gastroenterology Physician · OCEANSIDE, CA

Individual Active NPI 1851503353

Medicare payment data Part B · 2024

YearBeneficiariesServicesSubmittedAllowedPaid
2024342676$435,040$102,204$77,135
2023323660$424,248$98,241$73,651
2022277617$367,618$89,205$65,046

Top procedures (2024)

HCPCSDescriptionServicesAvg allowedAvg paid
45385Removal of polyps or growths of large bowel using an endoscope with mechanical snare118$254$212
43239Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope89$94$74
99204New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more86$175$115
99214Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more75$136$89
99203New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more60$119$72
45380Biopsy of large bowel using a flexible endoscope51$64$52
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 monito43$5$4
99213Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more31$98$63
99215Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more17$192$146
45378Diagnostic exam of large bowel using a flexible endoscope17$167$130
43251Removal of polyps or growths of esophagus, stomach, and/or upper small bowel using an endoscope with mechanical snare16$172$139
99223Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes15$176$137

Taxonomy & licensure

SpecialtyCodePrimaryLicenseState
Gastroenterology Physician207RG0100X✓A88942CA

Medicare eligibility

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

Other Gastroenterology Physician providers in California

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