Marie F. Grill, MD

Medicare activity in 2024

Official CMS public-use data for Marie F. Grill, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)258 services
2. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)133 services
3. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)122 services
4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)46 services
5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)45 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%
• High cholesterol75%
• Arthritis57%
• Ischemic heart disease40%
• Chronic kidney disease37%
• Depression35%

Hospitals where Marie F. Grill works

Medicare's Facility Affiliation Data lists Marie F. Grill 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.

• Mayo Clinic HospitalPhoenix, AZ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 030103

Practice locations

Addresses where Marie F. Grill is enrolled with Medicare (CMS data updated October 2, 2026).

• 13400 E Shea BlvdScottsdale, AZ 85259 (480) 301‑8000

Group practices

Medicare enrollment lists Marie F. Grill as a member of this group (CMS data updated October 2, 2026).

• Mayo Clinic Arizona1,626 clinicians in the group

Specialties

• Neurologyprimary

Find other Neurology doctors in Arizona →

Other neurologists in Scottsdale

Clinicians with the same Medicare primary specialty in Scottsdale, AZ — not a recommendation.

• Peter J. Struck, MD
• Marisa L. Sosinsky, MD
• Joseph I. Sirven, MD
• Jonathon Y. Markovitz, MD
• Brian L. Appavu, MD
• Gyanendra Kumar, MD
• Kamala C. Saha, MD
• Dean M. Wingerchuk, MD

All neurologists in Scottsdale →

Other clinicians in Mayo Clinic Arizona

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

• Allyson Hamacher, PA
• Nitin N. Katariya, MD
• Sharene Best, NP
• Heather L. Chung, NP
• Jeremiah R. Long, MD
• Augustine Chavez, 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