Quick answers
- Does Kristen M. Zack accept Medicare assignment?
- Yes. Medicare's clinician data says Kristen M. Zack 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 Kristen M. Zack see?
- In 2024, CMS data shows 325 Original Medicare patients and 832 services for Kristen M. Zack. This counts Original Medicare only and measures volume, not quality.
- What is Kristen M. Zack's NPI number?
- 1689056376. 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 Kristen M. Zack, 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 | 325 |
|---|---|
| Services billed to Medicare | 832 |
| Different services or procedures | 43 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)194 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)85 services
- X-ray of knee, 3 views (73562)71 services
- X-ray of lower and sacral spine, minimum of 4 views (72110)53 services
- X-ray of shoulder, minimum of 2 views (73030)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 cholesterol75%
- High blood pressure74%
- Arthritis68%
- Anxiety26%
- Ischemic heart disease25%
- Diabetes24%
Hospitals where Kristen M. Zack works
Medicare's Facility Affiliation Data lists Kristen M. Zack 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.
- Franciscan Health Crown PointCrown Point, IN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 150126
- Northwest Health - PorterValparaiso, IN · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 150035
- St Mary Medical Center IncHobart, IN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 150034
Practice locations
Addresses where Kristen M. Zack is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 3691 Willowcreek RdPortage, IN 46368 (219) 921‑1444
- 3777 N Frontage Rd, Suite 900Michigan City, IN 46360 (219) 921‑1444
- 425 Sand Creek DrChesterton, IN 46304
- 425 Sand Creek Dr, Suite CChesterton, IN 46304
- 500 E 109th AveCrown Point, IN 46307 (219) 921‑1444
Group practices
Medicare enrollment lists Kristen M. Zack as a member of these groups (CMS data updated October 2, 2026).
- Chesterton Physical Therapy Inc186 clinicians in the group
- Lakeshore Bone and Joint Institute, PC81 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Portage
Clinicians with the same Medicare primary specialty in Portage, IN — not a recommendation.
Other clinicians in Chesterton Physical Therapy Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2015 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689056376 |
| 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