Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Juan C. Roa Mendez, MD

Sees patients in Houston, TX · San Antonio, TX · Texas

Summary

Dr. Juan C. Roa Mendez, MD is an internal medicine doctor at 1900 N Loop W, Suite 310, Houston, TX 77018. Phone: (713) 442-3800. Accepts Medicare assignment. In 2024, Juan C. Roa Mendez had 29 Original Medicare patients and 71 services. NPI 1770877029. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 1900 N Loop W, Suite 310, Houston, TX 77018 · Directions (1 more location)
  • Phone: (713) 442‑3800
  • Medicare: Accepts Medicare assignment
  • Group practice: Kelsey-Seybold Medical Group, PLLC (+1 more)
  • Medical school: graduated 2005 (21 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Juan C. Roa Mendez, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Juan C. Roa Mendez accept Medicare assignment?
Yes. Medicare's clinician data says Juan C. Roa Mendez accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Juan C. Roa Mendez see?
In 2024, CMS data shows 29 Original Medicare patients and 71 services for Juan C. Roa Mendez. This counts Original Medicare only and measures volume, not quality.
What is Juan C. Roa Mendez's NPI number?
1770877029. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Juan C. Roa Mendez, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients29
Services billed to Medicare71
Different services or procedures13
Participating Medicare providerYes
Average age of these patients70

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)29 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)23 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure72%
  • Diabetes55%

Practice locations

Addresses where Juan C. Roa Mendez is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Juan C. Roa Mendez as a member of these groups (CMS data updated October 2, 2026).

  • Kelsey-Seybold Medical Group, PLLC957 clinicians in the group
  • Wellmed Medical Group PA646 clinicians in the group

Specialties

Find other Internal Medicine doctors in Texas →

Other internal medicine doctors in Houston

Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.

All internal medicine doctors in Houston →

Other clinicians in Kelsey-Seybold Medical Group, PLLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2005 (21 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1770877029
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians