Quick answers
- Which hospitals does John M. Macksood work at?
- Medicare's official clinician data lists John M. Macksood at 1 hospital: Ascension Genesys Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John M. Macksood see patients?
- Medicare's clinician data lists 1 practice location in Grand Blanc, MI. Call before your visit to confirm the address.
- What is John M. Macksood's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does John M. Macksood accept Medicare assignment?
- Yes. Medicare's clinician data says John M. Macksood 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 M. Macksood?
- (810) 603-8400, as listed in official Medicare / NPI Registry data.
- What is John M. Macksood's NPI number?
- 1952387797. 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 M. Macksood works
Medicare's Facility Affiliation Data lists John M. Macksood at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension Genesys HospitalGrand Blanc, MI · Acute Care Hospital · CCN 230197
Practice locations
Addresses where John M. Macksood is enrolled with Medicare (CMS data updated 2026-10-02).
- 8275 Holly Rd, Suite 2Grand Blanc, MI 48439 (810) 603‑8400
Group practices
Medicare enrollment lists John M. Macksood as a member of this group (CMS data updated 2026-10-02).
- Flint Gastroenterology Associates PC11 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Michigan
Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Michigan State University College Of Osteopathic Medicine |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1952387797 |
| 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