Quick answers
- Does Zachary W. Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Zachary W. Johnson 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 Zachary W. Johnson see?
- In 2024, CMS data shows 135 Original Medicare patients and 394 services for Zachary W. Johnson. This counts Original Medicare only and measures volume, not quality.
- What is Zachary W. Johnson's NPI number?
- 1437719507. 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 Zachary W. Johnson, 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 | 135 |
|---|---|
| Services billed to Medicare | 394 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)148 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)52 services
- Hospital discharge day management, 30 minutes or less (99238)49 services
- Insertion of needle into vein for collection of blood sample (36415)37 services
- Critical care, first 30-74 minutes (99291)22 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 disease53%
- Heart failure46%
- Anxiety44%
Hospitals where Zachary W. Johnson works
Medicare's Facility Affiliation Data lists Zachary W. Johnson 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.
- Ascension Providence Rochester HospitalRochester, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230254
- Henry Ford Health St John HospitalDetroit, MI · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 230165
- Henry Ford Macomb HospitalClinton Township, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230047
Practice locations
Addresses where Zachary W. Johnson is enrolled with Medicare (CMS data updated October 2, 2026).
- 1101 W University DrRochester, MI 48307 (248) 652‑5000
- 16001 W 9 Mile RdSouthfield, MI 48075 (248) 849‑3000
- 17900 23 Mile RdMacomb, MI 48044 (313) 647‑3900
- 57850 Van Dyke Rd, Suite 600Washington, MI 48094 (586) 738‑9448
Group practices
Medicare enrollment lists Zachary W. Johnson as a member of these groups (CMS data updated October 2, 2026).
- Henry Ford Semi Medical Group240 clinicians in the group
- Henry Ford Health Rochester Hospital112 clinicians in the group
- Independent Hospitalist Physicians PLLC61 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Rochester
Clinicians with the same Medicare primary specialty in Rochester, MI — not a recommendation.
Other clinicians in Henry Ford Semi Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2019 (7 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) | 1437719507 |
| 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