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

Internal Medicine

Dereddi Raja S. Reddy, MD

Sees patients in Houston, TX · Texas

Summary

Dr. Dereddi Raja S. Reddy, MD is an internal medicine doctor at 1515 Holcombe Blvd, Houston, TX 77030. Phone: (713) 792-2121. Accepts Medicare assignment. In 2024, Dereddi Raja S. Reddy had 90 Original Medicare patients and 194 services. NPI 1588977961. 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: 1515 Holcombe Blvd, Houston, TX 77030 · Directions
  • Phone: (713) 792‑2121
  • Medicare: Accepts Medicare assignment
  • Group practice: Physicians Referral Service
  • Medical school: graduated 2001 (25 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Dereddi Raja S. Reddy, 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 Dereddi Raja S. Reddy accept Medicare assignment?
Yes. Medicare's clinician data says Dereddi Raja S. Reddy 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 Dereddi Raja S. Reddy see?
In 2024, CMS data shows 90 Original Medicare patients and 194 services for Dereddi Raja S. Reddy. This counts Original Medicare only and measures volume, not quality.
What is Dereddi Raja S. Reddy's NPI number?
1588977961. 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 Dereddi Raja S. Reddy, 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 patients90
Services billed to Medicare194
Different services or procedures7
Participating Medicare providerYes
Average age of these patients70

Most frequent services

  1. Critical care, first 30-74 minutes (99291)156 services
  2. Irrigation and suction of lung airways to obtain cells using an endoscope (31624)15 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 blood pressure75%
  • High cholesterol74%
  • Chronic kidney disease50%
  • Diabetes48%
  • Anxiety48%
  • Ischemic heart disease46%

Practice locations

Addresses where Dereddi Raja S. Reddy is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Dereddi Raja S. Reddy as a member of this group (CMS data updated October 2, 2026).

  • Physicians Referral Service2,765 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 Physicians Referral Service

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

Clinician information

CredentialMD
Graduation year2001 (25 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1588977961
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