Dr. Christina E. Vallejo, MD

Pathology isn’t the first specialty that comes to mind when you think of a doctor’s visit. Yet behind every diagnosis, there’s a lab report—and someone who reads it carefully. Dr. Christina E. Vallejo, MD, works at the intersection of medicine and microscopic detail, providing the analysis that guides treatment decisions across New York City.

The office sits at 1275 York Ave, a stretch of the Upper East Side where hospital towers blend with residential brownstones. Patients rarely walk in for face-to-face appointments here; instead, samples arrive from clinics and operating rooms, and the results return through secure channels. A restroom is available on-site for staff and any visitors who need it.

When questions arise about a report or scheduling, the practice can be reached at (800) 525-2225. That toll-free line connects directly to the office handling the day’s caseload, so calls are routed efficiently without long hold times.

Directions to the building are straightforward—just pull up the map and follow York Avenue north from 68th Street. The neighborhood hums with the quiet rhythm of medical professionals moving between shifts, a reminder that some of the most critical work happens out of sight.