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

Internal Medicine

Althea H. Massenburg, MD

Works at hospitals in Durham, NC · Chapel Hill, NC · North Carolina

Summary

Dr. Althea H. Massenburg, MD is an internal medicine doctor at 4020 N Roxboro St, Suite 100, Durham, NC 27704. Phone: (919) 220-3333. Accepts Medicare assignment. In 2024, Althea H. Massenburg had 144 Original Medicare patients and 1,299 services. NPI 1710924311. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Althea H. Massenburg, 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 Althea H. Massenburg accept Medicare assignment?
Yes. Medicare's clinician data says Althea H. Massenburg 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 Althea H. Massenburg see?
In 2024, CMS data shows 144 Original Medicare patients and 1,299 services for Althea H. Massenburg. This counts Original Medicare only and measures volume, not quality.
What is Althea H. Massenburg's NPI number?
1710924311. 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 Althea H. Massenburg, 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 patients144
Services billed to Medicare1,299
Different services or procedures53
Participating Medicare providerYes
Average age of these patients72

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)389 services
  2. Hemoglobin a1c level (83036)160 services
  3. Blood test, lipids (cholesterol and triglycerides) (80061)145 services
  4. 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)133 services
  5. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)85 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%
  • Arthritis51%
  • Diabetes33%
  • Chronic kidney disease24%
  • Anxiety17%

Hospitals where Althea H. Massenburg works

Medicare's Facility Affiliation Data lists Althea H. Massenburg 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
  • UNC HospitalsChapel Hill, NC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 340061

Practice locations

Addresses where Althea H. Massenburg is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Althea H. Massenburg as a member of this group (CMS data updated October 2, 2026).

  • Raleigh Durham Medical Group PA77 clinicians in the group

Specialties

Find other Internal Medicine doctors in North Carolina →

Other internal medicine doctors in Durham

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

All internal medicine doctors in Durham →

Other clinicians in Raleigh Durham Medical Group PA

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

Clinician information

CredentialMD
Medical schoolUniversity Of Michigan Medical School
Graduation year1996 (30 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1710924311
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