npidexNPI registry + Medicare data

JOHN MESMER, M.D.

Emergency Medicine Physician · OAK RIDGE, TN

Individual Active NPI 1518914951

Medicare payment data Part B · 2024

YearBeneficiariesServicesSubmittedAllowedPaid
2024694782$1,148,581$109,704$85,374
2023627705$976,995$98,340$77,715
2022725821$1,162,099$122,137$98,614

Top procedures (2024)

HCPCSDescriptionServicesAvg allowedAvg paid
99285Emergency department visit with high level of medical decision making447$161$126
99284Emergency department visit with moderate level of medical decision making211$111$84
99291Critical care, first 30-74 minutes47$195$156
99283Emergency department visit with low level of medical decision making29$65$47

Taxonomy & licensure

SpecialtyCodePrimaryLicenseState
Emergency Medicine Physician207P00000X✓020154TN

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

Other Emergency Medicine Physician providers in Tennessee

See all Emergency Medicine Physician providers in Tennessee →

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