Alison D. Treister, MD

Medicare activity in 2024

Official CMS public-use data for Alison D. Treister, 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. Destruction of precancer skin growth, 2-14 growths (17003)435 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)268 services
3. Destruction of precancer skin growth, 1 growth (17000)212 services
4. Biopsy of related skin growth, first growth (11102)155 services
5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)125 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 cholesterol61%
• High blood pressure56%
• Arthritis40%
• Depression21%
• Anxiety20%
• Osteoporosis18%

Hospitals where Alison D. Treister works

Medicare's Facility Affiliation Data lists Alison D. Treister 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 Portland Medical CenterPortland, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380061
• Providence St Vincent Medical CenterPortland, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380004
• Providence Willamette Falls Medical CenterOregon City, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380038

Practice locations

Addresses where Alison D. Treister is enrolled with Medicare (CMS data updated October 2, 2026).

• 18040 SW Lower Boones Ferry Rd, Suite 201Tigard, OR 97224 (503) 216‑0500

Group practices

Medicare enrollment lists Alison D. Treister as a member of this group (CMS data updated October 2, 2026).

• Providence Health and Services Oregon1,433 clinicians in the group

Specialties

• Dermatologyprimary

Find other Dermatology doctors in Oregon →

Other dermatologists in Tigard

Clinicians with the same Medicare primary specialty in Tigard, OR — not a recommendation.

• Zachary G. Pena, MD
• Jo M. Martin, MD
• Stephen J. Mannino, MD
• Paul M. Hoesly, MD
• Sophia Sangar, MD
• Eric J. Hester, MD
• Gretchen E. Vanderbeek, MD

All dermatologists in Tigard →

Other clinicians in Providence Health and Services Oregon

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

• Rachel A. Boneski, DO
• Promporn Wichienkuer, MD
• Danielle L. Miller, DO
• Vaishali Y. Hotanalli, MD
• Kevin J. Jamison, MD
• John Lyle Tron Gomez, 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