npidexNPI registry + Medicare data

HOWARD MERTZ, M.D.

Gastroenterology Physician · NASHVILLE, TN

Individual Active NPI 1649278474

Medicare payment data Part B · 2024

YearBeneficiariesServicesSubmittedAllowedPaid
20249183,500$1,887,906$287,166$225,509
20237323,282$1,654,255$268,472$210,249
20227673,448$1,689,404$293,506$226,281

Top procedures (2024)

HCPCSDescriptionServicesAvg allowedAvg paid
99439Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month1,365$44$34
99490Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month734$58$45
99214Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more203$116$82
45385Removal of polyps or growths of large bowel using an endoscope with mechanical snare169$220$181
43235Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope121$93$71
45380Biopsy of large bowel using a flexible endoscope88$105$85
43239Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope84$90$66
99454Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days74$41$33
99204New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more72$150$105
99457Management using the results of remote vital sign monitoring per calendar month, first 20 minutes57$45$36
43238Ultrasound guided needle aspiration or biopsy of esophagus using a flexible endoscope53$209$161
G0121Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk51$164$164

Taxonomy & licensure

SpecialtyCodePrimaryLicenseState
Gastroenterology Physician207RG0100X✓MD0000025618TN

Medicare participation

Enrolled in Medicare

CMS lists this provider as eligible to order and refer under Medicare. They billed Medicare Part B in 2024.

Enrolment status from public CMS files — not a guarantee of coverage for any particular patient or plan. We hold no commercial-insurance network data; confirm with the provider and your insurer before an appointment.

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

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