Same-Day Access
Timely evaluation for many non-emergency concerns when appointments are available.
Independent physician-led care in Houston
Primary care built around access, time, and trust.
Rios Healthcare provides internal medicine, primary care, same-day sick visits when available, chronic care, in-house lab testing, X-ray services, geriatric care, and immigration medical exams.
Online bookings are reviewed by our staff. Your appointment is not finalized until confirmed by our office.
Why Rios Healthcare
Practical care with physicians who know their patients.
Our goal is to make high-quality medical care easier to reach without losing continuity, thoughtful evaluation, or the physician-patient relationship.
In-House Labs
Onsite testing can shorten the distance between evaluation, diagnosis, and follow-up.
X-Ray & Diagnostics
Clinic-based diagnostic services support coordinated care when clinically appropriate.
Physician-Led Care
Medical decisions remain centered on the patient relationship and individual needs.
Medical Services
Primary care for routine needs, urgent concerns, and long-term health.
Adults and families can request care for preventive visits, acute illness, chronic conditions, medication management, geriatric needs, and follow-up after testing.
Primary & Preventive Care
Routine care, annual physicals, screenings, risk review, and long-term health planning.
Explore services →Same-Day Sick Visits
Evaluation for many infections, respiratory symptoms, pain concerns, and other non-emergency problems.
Request a visit →Chronic & Geriatric Care
Ongoing management for complex health needs, medications, and conditions that require continuity.
Learn more →Labs, X-Ray & Follow-Up
In-house diagnostic services and coordinated review of results when available and appropriate.
View diagnostics →USCIS Immigration Medical Exams
Experienced, organized support for the Form I-693 process.
Nicolin Neal, MD, is a USCIS-designated civil surgeon who has completed hundreds of immigration medical exams. Rios Healthcare coordinates the examination, required screening, vaccination review, follow-up, and completion of the sealed Form I-693.
USCIS-designated civil surgeon
Required screening coordinated through the exam
Clear guidance from first visit through completion
Nicolin Neal, MD
Internal Medicine · USCIS Civil Surgeon
Review what to bring, estimated pricing, required testing, and the expected timeline.
Direct Care in Development
A clearer and more personal path to primary care.
Rios Healthcare continues to care for patients through traditional insurance and self-pay options while developing membership-style care designed to improve access, transparency, and continuity.
Final pricing, included services, eligibility, and insurance rules will be published before enrollment opens.
✓ Traditional insurance and self-pay pathways remain available
✓ Membership options are being designed around access and continuity
✓ Patients can express interest before enrollment begins
✓ Final program terms will be clearly disclosed before signup
Online Lab Ordering
Looking for self-directed laboratory testing?
Rios Click Labs is a separate online service where patients can review available laboratory panels and order certain testing options outside the main practice appointment workflow.
Our Physicians
Meet the doctors behind Rios Healthcare.
Our physicians bring internal medicine, primary care, geriatric, hospital, diagnostic, and immigration-exam experience to a relationship-focused practice.
Tomas G. Rios, MD
Founder · Internal MedicineBoard-certified internal medicine physician focused on accessible primary care, chronic care, and coordinated diagnostics.
View Dr. Rios's profile →
Nicolin Neal, MD
Internal Medicine · Geriatrics · Civil SurgeonBoard-certified physician providing primary care, geriatric medicine, preventive care, and USCIS immigration medical exams.
View Dr. Neal's profile →Need care? Start your appointment request online.
Submit your preferred visit, provider, date, and contact information. Our staff will review the request and send confirmation or contact you if another time or visit type is needed.