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Hematology/Oncology

Carlos M. De Castro Iii, MD

Works at hospitals in Durham, NC · North Carolina

Summary

Dr. Carlos M. De Castro Iii, MD is a hematologist-oncologist at 40 Duke Medicine Cir, Durham, NC 27710. Phone: (919) 684-8111. Accepts Medicare assignment. In 2024, Carlos M. De Castro Iii had 161 Original Medicare patients and 590 services. NPI 1912080169. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Hematologist-oncologist (Medicare lists Hematology/Oncology)
  • Address: 40 Duke Medicine Cir, Durham, NC 27710 · Directions
  • Phone: (919) 684‑8111
  • Medicare: Accepts Medicare assignment
  • Hospitals: Duke Regional Hospital, Duke University Hospital
  • Group practice: Duke Health Integrated Practice, Inc
  • Medical school: University Of Texas Southwestern Medical School At Dallas · graduated 1985 (41 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 Carlos M. De Castro Iii, 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 Carlos M. De Castro Iii accept Medicare assignment?
Yes. Medicare's clinician data says Carlos M. De Castro Iii 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 Carlos M. De Castro Iii see?
In 2024, CMS data shows 161 Original Medicare patients and 590 services for Carlos M. De Castro Iii. This counts Original Medicare only and measures volume, not quality.
What is Carlos M. De Castro Iii's NPI number?
1912080169. 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 Carlos M. De Castro Iii, 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 patients161
Services billed to Medicare590
Different services or procedures10
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)245 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)239 services
  3. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)58 services
  4. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)36 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 pressure73%
  • High cholesterol68%
  • Arthritis37%
  • Ischemic heart disease30%
  • Anxiety25%
  • Chronic kidney disease25%

Hospitals where Carlos M. De Castro Iii works

Medicare's Facility Affiliation Data lists Carlos M. De Castro Iii at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Duke Regional HospitalDurham, NC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 340155
  • Duke University HospitalDurham, NC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 340030

Practice locations

Addresses where Carlos M. De Castro Iii is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Carlos M. De Castro Iii as a member of this group (CMS data updated October 2, 2026).

  • Duke Health Integrated Practice, Inc3,185 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in North Carolina →

Other hematologist-oncologists in Durham

Clinicians with the same Medicare primary specialty in Durham, NC — not a recommendation.

All hematologist-oncologists in Durham →

Other clinicians in Duke Health Integrated Practice, Inc

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

Clinician information

CredentialMD
Medical schoolUniversity Of Texas Southwestern Medical School At Dallas
Graduation year1985 (41 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1912080169
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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians