Quick answers
- Does Xiaogang Zhang accept Medicare assignment?
- Yes. Medicare's clinician data says Xiaogang Zhang 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 Xiaogang Zhang see?
- In 2024, CMS data shows 202 Original Medicare patients and 778 services for Xiaogang Zhang. This counts Original Medicare only and measures volume, not quality.
- What is Xiaogang Zhang's NPI number?
- 1083678601. 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 Xiaogang Zhang, 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 | 202 |
|---|---|
| Services billed to Medicare | 778 |
| Different services or procedures | 24 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)260 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)172 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)154 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)42 services
- Hospital discharge day management, more than 30 minutes (99239)25 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 cholesterol72%
- High blood pressure71%
- Arthritis43%
- Diabetes26%
- Chronic kidney disease26%
- Anxiety23%
Hospitals where Xiaogang Zhang works
Medicare's Facility Affiliation Data lists Xiaogang Zhang 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.
- Borgess Medical CenterKalamazoo, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230117
- Bronson Battle Creek HospitalBattle Creek, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230075
- Bronson Lakeview HospitalPaw Paw, MI · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 231332
- Bronson Methodist HospitalKalamazoo, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230017
- Bronson South Haven HospitalSouth Haven, MI · Acute Care Hospital · Emergency services: listed by Medicare · CCN 230085
Practice locations
Addresses where Xiaogang Zhang is enrolled with Medicare (CMS data updated October 2, 2026).
- 2825 Airview BlvdPortage, MI 49002
- 3951 W Milham AvePortage, MI 49024 (269) 447‑1689
- 601 John StKalamazoo, MI 49007
Group practices
Medicare enrollment lists Xiaogang Zhang as a member of these groups (CMS data updated October 2, 2026).
- Bronson Methodist Hospital729 clinicians in the group
- Powerback Rehabilitation LLC649 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Portage
Clinicians with the same Medicare primary specialty in Portage, MI — not a recommendation.
Other clinicians in Bronson Methodist Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1984 (42 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1083678601 |
| 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