npidexNPI registry + Medicare data

GHASSAN ALZAYER, MD

Gastroenterology Physician · WASHINGTON, DC

Individual Active NPI 1396144804

Medicare payment data Part B · 2024

YearBeneficiariesServicesSubmittedAllowedPaid
2024346563$311,966$86,395$68,353
2023338584$333,045$85,347$67,462
2022385597$298,578$88,833$70,252

Top procedures (2024)

HCPCSDescriptionServicesAvg allowedAvg paid
99222Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes101$147$119
99214Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more83$146$105
43239Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope66$113$89
99204New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more45$191$140
45380Biopsy of large bowel using a flexible endoscope40$154$125
45385Removal of polyps or growths of large bowel using an endoscope with mechanical snare32$265$218
99232Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes21$86$70
43235Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope17$131$100
99204New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more16$152$115
45378Diagnostic exam of large bowel using a flexible endoscope14$183$142
G0121Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk14$194$194
G0105Colorectal cancer screening; colonoscopy on individual at high risk12$200$200

Taxonomy & licensure

SpecialtyCodePrimaryLicenseState
Gastroenterology Physician207RG0100X✓MD046302DC
Student in an Organized Health Care Education/Training Program390200000X——

Medicare eligibility

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

Other Gastroenterology Physician providers in District of Columbia

See all Gastroenterology Physician providers in District of Columbia →

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