Dr. Marielly Sierra Mercado, M.D.

With 13 years of practice, Dr. Marielly Sierra Mercado is an established endocrinology provider, M.D., after earning their medical degree at Other in 2011. Dr. currently practices at Hospital Oncologico Dr Isaac Gonzalez Martinez in San Juan, Puerto Rico. Their National Provider Identifier (NPI) is 1013258482, and the profile below combines data from CMS NPPES, Medicare billing records, the HHS OIG exclusion list, and — where available — CMS Open Payments, Medicare Utilization, and Part D prescriber summaries.

Dr. Marielly Sierra Mercado's practice is located in ZIP 00935 (San Juan, Puerto Rico), which has an overall CartoChrome Healthcare Access Score of 57/100 (Moderate Access). Access to care in this area is moderate — most services are reachable but with meaningful variability by specialty.

CMS Medicare data shows Dr. Marielly Sierra Mercado as a lower-volume endocrinology provider, treating approximately 50 Medicare beneficiaries and delivering 187 services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.

Under the Physician Payments Sunshine Act, CMS reports that Dr. Marielly Sierra Mercado received $1K in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.