Dorotheea O. Warmerdam, MD

Medicare activity in 2024

Official CMS public-use data for Dorotheea O. Warmerdam, 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.

Most frequent services

1. Removal of membrane of retina (67041)14 services
2. Repair of detached retina with drainage and removal of eye fluid between lens and retina (67108)14 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 cholesterol69%
• Arthritis35%
• Diabetes29%
• Ischemic heart disease25%
• Atrial fibrillation23%

Hospitals where Dorotheea O. Warmerdam works

Medicare's Facility Affiliation Data lists Dorotheea O. Warmerdam 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.

• Mercy General HospitalSacramento, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050017

Practice locations

Addresses where Dorotheea O. Warmerdam is enrolled with Medicare (CMS data updated October 2, 2026).

• 3 Park Ctr Dr, Suite 100Sacramento, CA 95825 (916) 454‑4861
• 5775 Greenback LnSacramento, CA 95841 (916) 339‑3655

Group practices

Medicare enrollment lists Dorotheea O. Warmerdam as a member of this group (CMS data updated October 2, 2026).

• Vitreo-Retinal Medical Group, Inc.22 clinicians in the group

Specialties

• Ophthalmologyprimary

Find other Ophthalmology doctors in California →

Other ophthalmologists in Sacramento

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

• Sina Rashidi Kikanloo, MD
• Bradley Barnett, MD
• Mitra Ayazifar, MD
• Brian A. Lee, MD
• Eliot R. Dow, MD
• Nandini G. Gandhi, MD
• Sara P. Modjtahedi, MD
• Annie K. Baik, MD

All ophthalmologists in Sacramento →

Other clinicians in Vitreo-Retinal Medical Group, Inc.

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

• Kin K. Yee, MD
• Eliot R. Dow, MD
• Joel A. Pearlman, MD
• David G. Cupp, MD
• Sarju S. Patel, MD
• Margaret A. Chang, MD

Clinician information

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