Puerto Rico operates on the 911 emergency system identical to the US mainland. The three-digit number connects callers to police, fire, and ambulance services throughout the island. Response times vary significantly by location, with San Juan metro area averaging under ten minutes for critical medical emergencies, while rural interior municipalities such as Jayuya or Utuado may experience waits exceeding forty minutes. The Centro Médico de Puerto Rico in the Río Piedras district of San Juan functions as the primary trauma center and houses the island's only Level I trauma designation. This complex includes the Centro Cardiovascular de Puerto Rico y del Caribe and Hospital de Trauma, which treat approximately 30,000 emergency cases annually. Following Hurricane Maria in September 2017, which destroyed the island's electrical grid and caused an estimated 2,975 deaths primarily from healthcare system disruption, backup generator capacity became legally mandated for all hospitals, though implementation remains incomplete as of 2024.
Auxilio Mutuo Hospital in Hato Rey handles the second-highest volume of emergency cases, with twenty-four hour trauma services and the island's busiest cardiac catheterization laboratory. San Juan's Ashford Presbyterian Community Hospital, now rebranded as Hospital Auxilio Mutuo Expreso, provides emergency care near the tourist-concentrated Condado district. Outside the capital region, Hospital Dr. Pila in Ponce maintains the south coast's primary emergency department with helicopter transfer capability to San Juan facilities. The western municipality of Mayagüez relies on Hospital Universitario Dr. Ramón Ruiz Arnau, affiliated with the Universidad de Puerto Rico medical school and offering twenty-four hour emergency services. Aguadilla's Hospital Buen Samaritano serves the northwest corridor including Isabela and Quebradillas. The island contains approximately fifty hospitals total, though fifteen rural facilities closed between 2015 and 2020 due to funding shortfalls under Puerto Rico's bankruptcy proceedings.
Healthcare operates under a mixed public-private system heavily dependent on US federal programs. Puerto Rico residents hold US citizenship under the Jones Act of 1917, making them eligible for Medicare upon reaching age sixty-five. However, federal Medicaid reimbursement operates under a capped block grant rather than the open-ended matching funds provided to states, resulting in significantly lower per-capita healthcare spending than any US state. As of 2023, the Federal Medicaid Assistance Percentage for Puerto Rico stands at fifty-five percent compared to rates between fifty and eighty-three percent for states. Approximately 1.4 million Puerto Ricans, roughly forty-three percent of the resident population, receive healthcare through the government insurance program La Reforma, which contracts with private insurers to deliver Medicaid services. An additional 600,000 residents use Medicare, while approximately 500,000 purchase private insurance. The remaining population, estimated at 300,000 to 400,000 people, lacks health coverage. Physician density measures 304 per 100,000 residents as of 2022, above the US national average of 280, but geographic concentration in San Juan metro leaves rural areas significantly underserved. Approximately sixty percent of practicing physicians on the island are over age sixty, and medical school graduates continue migrating to mainland US in search of higher reimbursement rates.
Prescription medications require physician authorization identical to US mainland protocols. Walgreens operates 117 locations across Puerto Rico, the largest pharmacy presence on the island. CVS maintains approximately eighty stores following acquisition of regional chain Farmacias Caridad. Puerto Rican chain Farmacias Aliadas operates thirty locations primarily in small municipalities. Prescription drug costs typically match or slightly exceed mainland US prices, as most medications transit through the same distribution networks. The island maintains no duty-free pharmaceutical provisions. Generic medications widely available include common antibiotics, blood pressure medications, and diabetes treatments. Specialized medications for cancer treatment, multiple sclerosis, or rare conditions may face supply interruptions, particularly during hurricane season when shipping routes close. The island experienced severe medication shortages lasting six to eight weeks after Hurricane Maria destroyed the electrical grid essential for pharmacy refrigeration and disrupted port operations in San Juan. Travelers requiring temperature-sensitive medications such as insulin should carry supplies sufficient for their entire stay plus one week additional as buffer against flight delays.
Puerto Rico uses the US telephone system with identical numbering protocols. Area codes 787 and 939 cover the entire island without geographic distinction between the two. Local calls within Puerto Rico require dialing the ten-digit number including area code, following changes implemented in 2001. International prefix 1-787 or 1-939 applies when calling Puerto Rico from outside US territories. Mobile phone service operates on the same frequencies as the US mainland, with GSM 850/1900 MHz for GSM carriers and CDMA 850/1900 MHz for CDMA networks, now largely replaced by LTE bands 2, 4, 5, 12, 13, 17, 25, 26, 41, 66, and 71. The three major carriers—Claro, T-Mobile, and AT&T—maintain cell towers covering approximately ninety-two percent of the population but significantly less geographic area due to mountainous interior terrain. The Cordillera Central mountain range running east-west through the island's center creates dead zones where no carrier provides reliable service, particularly along Routes 143, 149, and 155 traversing the highest elevations.
Claro, owned by América Móvil, operates the most extensive network with approximately 1.8 million subscribers and the strongest coverage in rural western municipalities including Rincón, Aguada, and Moca. T-Mobile Puerto Rico, formerly operating as MetroPCS and then rebranded, serves approximately 900,000 subscribers with superior coverage along the north coast from Arecibo through San Juan to Fajardo. AT&T maintains the smallest subscriber base at roughly 600,000 but offers the most reliable service in the mountainous interior including Utuado, Adjuntas, and Jayuya where the company invested in tower hardening after Hurricane Maria. Liberty Puerto Rico provides fiber-optic internet and landline telephone services but exited the mobile market in 2021. All three mobile carriers offer 5G service in San Juan metro, Ponce, and Mayagüez, though coverage remains limited to specific neighborhoods rather than citywide implementation. Average mobile data speeds measure 42 Mbps download and 11 Mbps upload across the island according to Ookla Speedtest data from the third quarter of 2023.
Travelers with US mobile phone plans from AT&T, T-Mobile, Verizon, or regional carriers face no roaming charges in Puerto Rico, as all major carriers treat the territory identically to the fifty states for billing purposes. Phone calls, text messages, and data usage deduct from standard plan allotments without additional fees. Verizon, despite lacking a direct retail presence, provides service through roaming agreements with AT&T and Claro infrastructure. International travelers with non-US plans should verify Puerto Rico coverage with their home carrier, as some European and Asian carriers classify the territory separately from the United States mainland and impose roaming fees ranging from two to eight dollars per megabyte. Prepaid SIM cards available for purchase at Luis Muñoz Marín International Airport in Carolina or carrier retail stores in San Juan require unlocked phones and cost between fifteen and forty dollars for basic plans with 3 to 10 GB of data valid for thirty days.
Internet access in Puerto Rico measures below US mainland averages across all metrics. Fixed broadband penetration reaches approximately sixty-two percent of households as of 2023, compared to eighty-seven percent in the continental US. Liberty Puerto Rico provides cable internet through coaxial infrastructure to approximately 430,000 subscribers with advertised speeds from 100 Mbps to 1 Gbps, though actual speeds frequently measure thirty to fifty percent below advertised rates according to Federal Communications Commission testing. Claro offers DSL service reaching 150,000 subscribers but with maximum speeds rarely exceeding 10 Mbps due to aging copper telephone line infrastructure. Fiber-to-the-home service exists only in specific San Juan metro neighborhoods including Guaynabo's Torrimar development and parts of Condado. The median fixed broadband download speed measures 67 Mbps as of the fourth quarter 2023, ranking below every US state except Mississippi.