Quick answers
- Does April John T. Mercado accept Medicare assignment?
- Yes. Medicare's clinician data says April John T. Mercado 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 April John T. Mercado's NPI number?
- 1497409452. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where April John T. Mercado is enrolled with Medicare (CMS data updated October 2, 2026).
- 1562 Opossumtown Pike, Suite 301Frederick, MD 21702 (240) 215‑6310
- 4141 A Duke StAlexandria, VA 22304 (703) 461‑3556
Group practices
Medicare enrollment lists April John T. Mercado as a member of these groups (CMS data updated October 2, 2026).
- Frederick Health Medical Group LLC199 clinicians in the group
- Washington Nephrology Associates LLP35 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Frederick
Clinicians with the same Medicare primary specialty in Frederick, MD — not a recommendation.
Other clinicians in Frederick Health Medical Group LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497409452 |
| 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
- 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