Erin J. Macdonald, MD

Medicare activity in 2024

Official CMS public-use data for Erin J. Macdonald, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)39 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)31 services
3. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)30 services
4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)20 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)15 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 cholesterol71%
• High blood pressure48%
• Arthritis43%
• Anxiety41%
• Osteoporosis29%
• Depression26%

Hospitals where Erin J. Macdonald works

Medicare's Facility Affiliation Data lists Erin J. Macdonald 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.

• Sierra Nevada Memorial HospitalGrass Valley, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050150

Practice locations

Addresses where Erin J. Macdonald is enrolled with Medicare (CMS data updated October 2, 2026).

• 155 Glasson Way, Suite L 10Grass Valley, CA 95945 (530) 274‑6677
• 1700 Prairie City RdFolsom, CA 95630 (916) 351‑4800
• 1730 Prairie City Rd, Suite 120Folsom, CA 95630 (916) 351‑4800
• 280 Sierra College DrGrass Valley, CA 95945

Group practices

Medicare enrollment lists Erin J. Macdonald as a member of this group (CMS data updated October 2, 2026).

• Dignity Health Medical Foundation1,184 clinicians in the group

Specialties

• Obstetrics/Gynecologyprimary

Find other Obstetrics/Gynecology doctors in California →

Other OB-GYNs in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

• Phillip L. Kintner, MD
• Faye W. Jensen, MD
• Mark Z. Zhang, MD
• Kaivon Arfaa, MD
• Kyu B. Kwak, MD
• Amy W. Zhai, MD
• Prema Kothandaraman, MD
• Kathryn M. Osei-Bonsu, MD

All OB-GYNs in California →

Other clinicians in Dignity Health Medical Foundation

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

• Theresa M. Rothrock, PA
• Annapoorna Muthyapu, MD
• Donald P. Carter, MD
• Henry C. Hsiao, MD
• Beth Wheeler, PA
• Efren F. Wu, 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