Quick answers
- Does Ernesto Mejia accept Medicare assignment?
- Yes. Medicare's clinician data says Ernesto Mejia accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Ernesto Mejia see?
- In 2024, CMS data shows 749 Original Medicare patients and 3,927 services for Ernesto Mejia. This counts Original Medicare only and measures volume, not quality.
- What is Ernesto Mejia's NPI number?
- 1205814605. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Ernesto Mejia, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 749 |
|---|---|
| Services billed to Medicare | 3,927 |
| Different services or procedures | 37 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)925 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)759 services
- Injection, ceftriaxone sodium, per 250 mg (J0696)284 services
- Injection of drug or substance under skin or into muscle (96372)237 services
- Test to determine lung volumes using gas dilution or washout (94727)221 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- COPD75%
- Arthritis61%
- Diabetes45%
- Ischemic heart disease44%
Hospitals where Ernesto Mejia works
Medicare's Facility Affiliation Data lists Ernesto Mejia at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Claiborne Medical CenterTazewell, TN · Acute Care Hospital · Emergency services: listed by Medicare · CCN 440057
- Morristown Hamblen Hospital AssociationMorristown, TN · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 440030
Practice locations
Addresses where Ernesto Mejia is enrolled with Medicare (CMS data updated October 2, 2026).
- 500 McFarland St, Suite BMorristown, TN 37814 (423) 587‑0740
Specialties
Other pulmonologists in Tennessee
Clinicians with the same Medicare primary specialty in Tennessee — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | East Tennessee State University Quillen College Of Medicine |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1205814605 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians