David Mazur-Hart, MD

Medicare activity in 2024

Official CMS public-use data for David Mazur-Hart, 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. Fusion of additional segment of spine (22614)112 services
2. 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
3. Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or (G2212)15 services
4. Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)13 services
5. Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment (63047)12 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%
• Arthritis75%
• High cholesterol74%
• Anxiety36%
• Depression33%
• Diabetes29%

Hospitals where David Mazur-Hart works

Medicare's Facility Affiliation Data lists David Mazur-Hart 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.

• Adventist Health TillamookTillamook, OR · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 381317
• Columbia Memorial HospitalAstoria, OR · Critical Access Hospital · Emergency services: listed by Medicare · CCN 381320
• Hillsboro Medical CenterHillsboro, OR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 380021
• OHSU Hospital and ClinicsPortland, OR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 380009

Practice locations

Addresses where David Mazur-Hart is enrolled with Medicare (CMS data updated October 2, 2026).

• 3181 SW Sam Jackson Park RdPortland, OR 97239 (503) 494‑8311
• 335 SE 8th AveHillsboro, OR 97123 (503) 681‑1111

Group practices

Medicare enrollment lists David Mazur-Hart as a member of these groups (CMS data updated October 2, 2026).

• University Professional Services1,724 clinicians in the group
• Tuality Medical Group LLC297 clinicians in the group

Specialties

• Neurosurgeryprimary

Find other Neurosurgery doctors in Oregon →

Other neurosurgeons in Portland

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

• Jordi X. Kellogg, MD
• Daniel Cleary, MD
• Michelle Williams, MD
• Stephen Bowden, MD
• Josiah Orina, MD
• Trae Robison, MD
• Amit B. Ayer, MD
• Donald A. Ross, MD

All neurosurgeons in Portland →

Other clinicians in University Professional Services

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

• Oren Shaked, MD
• Emily Rowan, NP
• Reyhaneh M. Akhavein, MD
• Salil Rajayer, MD
• Kaitlin A. Greene, MD
• Arnab Mitra, 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