Quick answers
- Does Jacqueline K. Macknis accept Medicare assignment?
- Yes. Medicare's clinician data says Jacqueline K. Macknis 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 Jacqueline K. Macknis see?
- In 2024, CMS data shows 117 Original Medicare patients and 215 services for Jacqueline K. Macknis. This counts Original Medicare only and measures volume, not quality.
- What is Jacqueline K. Macknis's NPI number?
- 1336109438. 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 Jacqueline K. Macknis, 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 | 117 |
|---|---|
| Services billed to Medicare | 215 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)105 services
- Microscopic genetic analysis of tumor, manual (88360)41 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%
- Arthritis50%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)47%
- Ischemic heart disease41%
- Diabetes37%
Hospitals where Jacqueline K. Macknis works
Medicare's Facility Affiliation Data lists Jacqueline K. Macknis 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.
- Beaumont Hospital - DearbornDearborn, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230020
- Beaumont Hospital - Grosse PointeGrosse Pointe, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230089
- Beaumont Hospital Royal OakRoyal Oak, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230130
- Beaumont Hospital, TroyTroy, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230269
- Spectrum HealthGrand Rapids, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230038
Practice locations
Addresses where Jacqueline K. Macknis is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 12; the Medicare profile lists all.
- 100 Michigan Ave NEGrand Rapids, MI 49503
- 18101 Oakwood BlvdDearborn, MI 48124
- 28050 Grand River AveFarmington Hills, MI 48336
- 33155 Annapolis StWayne, MI 48184
- 3535 W 13 Mile RdRoyal Oak, MI 48073
Group practices
Medicare enrollment lists Jacqueline K. Macknis as a member of this group (CMS data updated October 2, 2026).
- Beaumont Medical Group Hospital Based Services584 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Grand Rapids
Clinicians with the same Medicare primary specialty in Grand Rapids, MI — not a recommendation.
Other clinicians in Beaumont Medical Group Hospital Based Services
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wayne State University School Of Medicine |
| Graduation year | 1996 (30 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336109438 |
| 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