Dennis L. Frew, DO

Medicare activity in 2024

Official CMS public-use data for Dennis L. Frew, 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 low level od decision making, if using time, 20 minutes or more (99213)192 services
2. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)76 services
3. New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more (99202)36 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 pressure74%
• Diabetes58%
• High cholesterol57%
• Arthritis32%
• Osteoporosis16%
• Ischemic heart disease15%

Hospitals where Dennis L. Frew works

Medicare's Facility Affiliation Data lists Dennis L. Frew 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.

• Fort Defiance Indian HospitalFt. Defiance, AZ · Acute Care Hospital · Emergency services: listed by Medicare · CCN 030071

Practice locations

Addresses where Dennis L. Frew is enrolled with Medicare (CMS data updated October 2, 2026).

• Corner of Route N12 and N7, Fdihb Inc.Fort Defiance, AZ 86504 (928) 729‑8082

Group practices

Medicare enrollment lists Dennis L. Frew as a member of this group (CMS data updated October 2, 2026).

• The Fort Defiance Indian Hospital Board, Incorporation151 clinicians in the group

Specialties

• Otolaryngologyprimary

Find other Otolaryngology doctors in Arizona →

Other ENT doctors in Arizona

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

• Deborah X. Xie, MD
• Harrison A. Cash, MD
• Stephen M. Russell, MD
• Cheryl A. Mackechnie, MD
• Jordan S. Weiner, MD
• Tracey L. Knott, DO
• Niki A. Patel, DO
• Adam M. Cassis, MD

All ENT doctors in Arizona →

Other clinicians in The Fort Defiance Indian Hospital Board, Incorporation

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

• Paul R. De Lbianco, MD
• David H. Biberdorf, OD
• Naomi J. Young, MD
• Eileen D. Barrett, MD
• Beth L. Morgan, OD
• Mark S. Malone, 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