Quick answers
- Which hospitals does John C. Mavropoulos work at?
- Medicare's official clinician data lists John C. Mavropoulos at 1 hospital: Altru Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Mavropoulos see patients?
- Medicare's clinician data lists 5 practice locations, including Grand Forks, ND, Ocala, FL and Englewood, FL. Call before your visit to confirm the address.
- What is John C. Mavropoulos's specialty?
- Medicare lists Dermatology as the primary specialty, and also Micrographic Dermatologic Surgery (MDS).
- Does John C. Mavropoulos accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Mavropoulos accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John C. Mavropoulos?
- (701) 795-2000, as listed in official Medicare / NPI Registry data.
- What is John C. Mavropoulos's NPI number?
- 1063737682. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John C. Mavropoulos works
Medicare's Facility Affiliation Data lists John C. Mavropoulos at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Altru HospitalGrand Forks, ND · Acute Care Hospital · CCN 350019
Practice locations
Addresses where John C. Mavropoulos is enrolled with Medicare (CMS data updated 2026-10-02).
- 1380 S Columbia RdGrand Forks, ND 58201 (701) 795‑2000
- 3165 Demers AveGrand Forks, ND 58201 (701) 780‑6623
- 3210 SW 33rd Rd, Suite 101Ocala, FL 34474 (352) 512‑0092
- 350 S Indiana AveEnglewood, FL 34223 (941) 474‑8811
- 6771 Professional PkwyLakewood Ranch, FL 34240 (941) 907‑7372
Group practices
Medicare enrollment lists John C. Mavropoulos as a member of these groups (CMS data updated 2026-10-02).
- Altru Health System684 clinicians in the group
- Premier Dermatology, LLC49 clinicians in the group
- Midstate Skin Institute LLC18 clinicians in the group
Specialties
Other dermatologists in North Dakota
Clinicians with the same Medicare primary specialty in North Dakota — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Duke University School Of Medicine |
| Graduation year | 2010 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1063737682 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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