Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Jonathan Romero Casillas, MD

Individual provider Undersea and Hyperbaric Medicine (Emergency Medicine) Physician · NPI 1346783420

Jonathan Romero Casillas, MD is an Emergency Medicine in Carolina, Puerto Rico. Qualified in 2014, 12 years ago. Practices with Ajl Medical Services LLC, a 3-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Puerto Rico.

Years since qualifying
12
Licensed in
PR
In the registry since
2016
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address may be wrong

The ZIP code does not match the city and state on this record. Call before visiting.

Carr 185 KM15.8 Bo Cedros
Carolina, PR 00987
Phone: (787) 918-2348

Specialties & licences

Undersea and Hyperbaric Medicine (Emergency Medicine) Physician (primary) Taxonomy 207PE0005X · Licence 19513 (PR)

Record details

NPI number1346783420
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 22, 2016
Last updated in NPPESApril 6, 2024
Certification dateApril 6, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Also practisesUNDERSEA AND HYPERBARIC MEDICINE
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice Ajl Medical Services Llc — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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