Gregg Sydow

Practice locations

• Olean General Hospital
  Street address not reported, Flagstaff, AZ 86005
  Call 7166922160
• San Carlos Apache Healthcare Corporation
  103 Medicine Way Rd , Peridot, AZ 85542
  Call 9284751400
• Sonoran Radiology Ltd
  1400 S Dobson Rd , Mesa, AZ 85202
  Call 8329152534
• Advanced Radiology P A
  4062 S Holland Rd , Flagstaff, AZ 86005
  Call 8889729700
• Radiology Alliance Pc
  4062 S Holland Rd , Flagstaff, AZ 86005
  Call 6153120600
• Steuben Radiology Associates Inc
  4062 S Holland Rd , Flagstaff, AZ 86005
  Call 7402648287
• Radiology Associates Of Muncie Inc
  4062 S Holland Rd , Flagstaff, AZ 86005
  Call 9036634800
• Mary Imogene Bassett Hospital
  4062 S Holland Rd , Flagstaff, AZ 86005
  Call 6075473456
• Virtual Radiologic Professionals Llc
  4062 S Holland Rd , Flagstaff, AZ 86005
  Call 9525951100
• Merrimack Radiology-Cra Llc
  4062 S Holland Rd , Flagstaff, AZ 86005
  Call 9789376240
• Fred Smeltzer Md And Associates Inc
  4062 S Holland Rd , Flagstaff, AZ 86005
  Call 9525951100
• Virtual Radiologic Professionals Llc
  4610 E Cerro De Aguila , Tucson, AZ 85718
  Call 9525951100
• Sonoran Radiology Ltd
  6750 E Baywood Ave , Mesa, AZ 85206
  Call 8329152534
• San Carlos Apache Healthcare Corporation
  P O Box Suite 787, Peridot, AZ 85542
• San Carlos Apache Healthcare Corporation
  Po Box Suite 787, Peridot, AZ 85542

CMS measures of specific care

These are 2024 results reported for this clinician’s NPI. Each CMS rating describes one measure of care, not patient reviews or an overall doctor grade. The patients, ages and insurance types included depend on the measure and collection method; these are not necessarily Medicare-only or pediatric results. They do not establish performance at a particular current practice.

No individual clinical measures approved by CMS for profile display are available for this doctor in this release. Missing results do not mean poor care. Many clinicians or measures are not publicly reported.

Released 2026-09-10. Only CMS display-approved MIPS and QCDR clinical measures are shown; participation attestations and cost measures are excluded. CMS uses a benchmark drawn from best performers covering at least 10% of the relevant patient population, with an adjustment for small denominators. ModernDoc has not independently validated these ratings. Source data and reported rates · CMS rating methodology · Coverage and reporting limits.

Reported procedure activity

CMS attributes these procedures to this clinician through Original Medicare and Medicare Advantage claims and encounters. Counts span locations and are not unique-patient counts. They do not establish quality, current availability, or that a procedure is offered at any practice listed here. Other insurance populations are not included.

No procedure activity is available for display in this release. This does not mean this doctor has no experience.

CMS release 2026-10-15. CMS describes a 12-month observation window with a three-month claims-processing lag; this file does not provide exact start and end dates. Only categories CMS marks for profile display are shown. Source data · How CMS reports procedures.

Patient experience at affiliated groups

No group survey results are linked in this release. Missing information is not a judgment about this doctor’s care.

CMS group survey year 2024 · Released 2026-09-10. View the source data · How CMS reports these measures.