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Critical Care (Intensivists)

Diane A. Wintz, MD

Works at hospitals in La Mesa, CA · San Diego, CA · California

Summary

Dr. Diane A. Wintz, MD is a critical care doctor at 7901 Frost St, San Diego, CA 92123. Phone: (858) 939-3400. Accepts Medicare assignment. In 2024, Diane A. Wintz had 163 Original Medicare patients and 316 services. NPI 1164721932. 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: Critical care doctor (Medicare lists Critical Care (Intensivists))
  • Address: 7901 Frost St, San Diego, CA 92123 · Directions
  • Phone: (858) 939‑3400
  • Medicare: Accepts Medicare assignment
  • Hospitals: Grossmont Hospital, Sharp Memorial Hospital
  • Group practice: Emergency and Acute Care Medical Corporation
  • Medical school: Texas Tech University Health Science Center School Of Medicine · graduated 2006 (20 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Diane A. Wintz, 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 Diane A. Wintz accept Medicare assignment?
Yes. Medicare's clinician data says Diane A. Wintz 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 Diane A. Wintz see?
In 2024, CMS data shows 163 Original Medicare patients and 316 services for Diane A. Wintz. This counts Original Medicare only and measures volume, not quality.
What is Diane A. Wintz's NPI number?
1164721932. 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 Diane A. Wintz, 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 patients163
Services billed to Medicare316
Different services or procedures29
Participating Medicare providerYes
Average age of these patients78

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)94 services
  2. Critical care, first 30-74 minutes (99291)68 services
  3. Hospital discharge day management, 30 minutes or less (99238)34 services
  4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)29 services
  5. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)28 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 cholesterol73%
  • Arthritis57%
  • Diabetes52%
  • Chronic kidney disease42%
  • Atrial fibrillation38%

Hospitals where Diane A. Wintz works

Medicare's Facility Affiliation Data lists Diane A. Wintz 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.

  • Grossmont HospitalLa Mesa, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050026
  • Sharp Memorial HospitalSan Diego, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050100

Practice locations

Addresses where Diane A. Wintz is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Diane A. Wintz as a member of this group (CMS data updated October 2, 2026).

  • Emergency and Acute Care Medical Corporation422 clinicians in the group

Specialties

Find other Critical Care (Intensivists) doctors in California →

Other critical care doctors in San Diego

Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.

All critical care doctors in San Diego →

Other clinicians in Emergency and Acute Care Medical Corporation

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

Clinician information

CredentialMD
Medical schoolTexas Tech University Health Science Center School Of Medicine
Graduation year2006 (20 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1164721932
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