Quick answers
- Does Andrew R. Gruenzel accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew R. Gruenzel accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Andrew R. Gruenzel see?
- In 2024, CMS data shows 197 Original Medicare patients and 853 services for Andrew R. Gruenzel. This counts Original Medicare only and measures volume, not quality.
- What is Andrew R. Gruenzel's NPI number?
- 1548793177. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Andrew R. Gruenzel, 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.
| Original Medicare patients | 197 |
|---|---|
| Services billed to Medicare | 853 |
| Different services or procedures | 38 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)286 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)116 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)89 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)77 services
- Injection of substance into lower spine canal using imaging guidance (62323)48 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%
- Arthritis75%
- Anxiety38%
- Diabetes33%
- Depression30%
Hospitals where Andrew R. Gruenzel works
Medicare's Facility Affiliation Data lists Andrew R. Gruenzel 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.
- Lake HealthConcord, OH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 360098
- UH Cleveland Medical CenterCleveland, OH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 360137
- UH Regional HospitalsChardon, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 360075
Practice locations
Addresses where Andrew R. Gruenzel is enrolled with Medicare (CMS data updated October 2, 2026).
- 158 W Main RdConneaut, OH 44030
- 5105 Som Ctr RdWilloughby, OH 44094
- 7580 Auburn Rd, Suite 214Concord Township, OH 44077 (440) 354‑0944
- 8655 Market StMentor, OH 44060 (440) 833‑2010
Group practices
Medicare enrollment lists Andrew R. Gruenzel as a member of this group (CMS data updated October 2, 2026).
- University Primary Care Practices Inc1,079 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Conneaut
Clinicians with the same Medicare primary specialty in Conneaut, OH — not a recommendation.
Other clinicians in University Primary Care Practices Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Cincinnati College Of Medicine And Surgery |
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1548793177 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians