Louise May, MD

Medicare activity in 2024

Official CMS public-use data for Louise May, 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. Ultrasound study of arm and leg arteries (93922)87 services
2. Ultrasound of both sides of head and neck blood flow (93880)73 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)48 services
4. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)42 services
5. Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts (93978)33 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 cholesterol75%
• Arthritis48%
• Ischemic heart disease39%
• Diabetes35%
• Atrial fibrillation31%

Hospitals where Louise May works

Medicare's Facility Affiliation Data lists Louise May 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.

• Providence Centralia HospitalCentralia, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500019
• Providence St Peter HospitalOlympia, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500024

Practice locations

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

• 525 Lilly Rd NEOlympia, WA 98506 (360) 493‑7230

Group practices

Medicare enrollment lists Louise May as a member of this group (CMS data updated October 2, 2026).

• Providence Health and Services Washington475 clinicians in the group

Specialties

• Vascular Surgeryprimary

Find other Vascular Surgery doctors in Washington →

Other vascular surgeons in Olympia

Clinicians with the same Medicare primary specialty in Olympia, WA — not a recommendation.

• Joshua A. Gabel, MD
• Allan Young, DO
• Robert Perry, MD
• Thomas K. Curry, MD

All vascular surgeons in Olympia →

Other clinicians in Providence Health and Services Washington

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

• Ismael Concepcion Poo
• Warangkhana Wongba
• Madeline Nguyen, MD
• Brian Holahan, DO
• Cullen N. Owen, DO
• Rekha Chandran, 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