Jeffrey N. Mercer, MD

Medicare activity in 2024

Official CMS public-use data for Jeffrey N. Mercer, 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. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)314 services
2. Aspiration and/or injection of fluid from large joint (20610)42 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)42 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)38 services
5. X-ray of knee, 4 or more views (73564)32 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).

• Arthritis72%
• High blood pressure68%
• High cholesterol62%
• Diabetes27%
• Depression25%
• Atrial fibrillation24%

Hospitals where Jeffrey N. Mercer works

Medicare's Facility Affiliation Data lists Jeffrey N. Mercer 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 Milwaukie HospitalMilwaukie, OR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 380082
• Providence Portland Medical CenterPortland, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380061

Practice locations

Addresses where Jeffrey N. Mercer is enrolled with Medicare (CMS data updated October 2, 2026).

• 1111 NE 99th AvePortland, OR 97220
• 4805 NE GlisanPortland, OR 97213
• 5050 NE Hoyt, Suite 655Portland, OR 97213 (503) 239‑6673
• 5050 NE Hoyt StPortland, OR 97213

Group practices

Medicare enrollment lists Jeffrey N. Mercer as a member of this group (CMS data updated October 2, 2026).

• The Oregon Clinic, PC362 clinicians in the group

Specialties

• Orthopedic Surgeryprimary

Find other Orthopedic Surgery doctors in Oregon →

Other orthopedic surgeons in Portland

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

• J Rafe Sales, MD
• Robert E. Tennant, MD
• Jesse A. McCarron, MD
• Gavin J. Button, MD
• John G. Massoud, MD
• Samuel J. Cohen-Tanugi, MD
• Thilo R. Weissflog, MD
• Zackary Johnson, MD

All orthopedic surgeons in Portland →

Other clinicians in The Oregon Clinic, PC

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

• Michael G. Phillips, MD
• Lauren E. Orr, MD
• Shivani J. Patel, MD
• Michael J. Adler, MD
• Amanda V. Hayman, MD
• Donna M. Santos, NP

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