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Internal Medicine

Marianne Hazelitt, DO

Sees patients in Corpus Christi, TX · Texas

Summary

Dr. Marianne Hazelitt, DO is an internal medicine doctor at 6202 Dunbarton Oak St, Suite 200a, Corpus Christi, TX 78414. Phone: (361) 391-5056. Accepts Medicare assignment. In 2024, Marianne Hazelitt had 91 Original Medicare patients and 213 services. NPI 1558655027. 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: 6202 Dunbarton Oak St, Suite 200a, Corpus Christi, TX 78414 · Directions
  • Phone: (361) 391‑5056
  • Medicare: Accepts Medicare assignment
  • Medical school: Touro Un Col Of Osteopathic Medicine, Henderson · graduated 2011 (15 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Marianne Hazelitt, 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 Marianne Hazelitt accept Medicare assignment?
Yes. Medicare's clinician data says Marianne Hazelitt 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 Marianne Hazelitt see?
In 2024, CMS data shows 91 Original Medicare patients and 213 services for Marianne Hazelitt. This counts Original Medicare only and measures volume, not quality.
What is Marianne Hazelitt's NPI number?
1558655027. 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 Marianne Hazelitt, 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 patients91
Services billed to Medicare213
Different services or procedures17
Participating Medicare providerYes
Average age of these patients75

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)104 services
  2. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)31 services
  3. 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)26 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 pressure70%
  • Arthritis59%
  • Ischemic heart disease36%
  • Chronic kidney disease34%
  • Diabetes31%

Practice locations

Addresses where Marianne Hazelitt is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Internal Medicine doctors in Texas →

Other internal medicine doctors in Corpus Christi

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

All internal medicine doctors in Corpus Christi →

Clinician information

CredentialDO
Medical schoolTouro Un Col Of Osteopathic Medicine, Henderson
Graduation year2011 (15 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1558655027
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