Quick answers
- Does Allan J. Mejia Portillo accept Medicare assignment?
- Yes. Medicare's clinician data says Allan J. Mejia Portillo 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.
- What is Allan J. Mejia Portillo's NPI number?
- 1033850052. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Allan J. Mejia Portillo works
Medicare's Facility Affiliation Data lists Allan J. Mejia Portillo 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.
- Metro Nashville General HospitalNashville, TN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 440111
- Tristar Centennial Medical CenterNashville, TN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 440161
- Tristar Northcrest Medical CenterSpringfield, TN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 440065
Practice locations
Addresses where Allan J. Mejia Portillo is enrolled with Medicare (CMS data updated October 2, 2026).
- 1005 Dr Db Todd Jr BlvdNashville, TN 37208 (615) 327‑6000
- 2300 Patterson StNashville, TN 37203 (615) 342‑1000
Group practices
Medicare enrollment lists Allan J. Mejia Portillo as a member of these groups (CMS data updated October 2, 2026).
- Hospital Medicine Services of TN LLC275 clinicians in the group
- Meharry Medical College40 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Nashville
Clinicians with the same Medicare primary specialty in Nashville, TN — not a recommendation.
Other clinicians in Hospital Medicine Services of TN LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033850052 |
| 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
- 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