Quick answers
- Does Sunny H. Zhang accept Medicare assignment?
- Yes. Medicare's clinician data says Sunny H. 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 Sunny H. Zhang see?
- In 2024, CMS data shows 118 Original Medicare patients and 361 services for Sunny H. Zhang. This counts Original Medicare only and measures volume, not quality.
- What is Sunny H. Zhang's NPI number?
- 1568466118. 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 Sunny H. 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 | 118 |
|---|---|
| Services billed to Medicare | 361 |
| Different services or procedures | 41 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Screening 3d breast mammography (77063)77 services
- Screening mammography (77067)77 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)28 services
- Dxa bone density measurement of hip, pelvis, spine (77080)27 services
- Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)19 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 cholesterol69%
- High blood pressure43%
- Arthritis31%
- Anxiety24%
- Depression22%
- Osteoporosis20%
Hospitals where Sunny H. Zhang works
Medicare's Facility Affiliation Data lists Sunny H. 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.
- St Lukes HospitalCedar Rapids, IA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 160045
Practice locations
Addresses where Sunny H. Zhang is enrolled with Medicare (CMS data updated October 2, 2026).
- 855 A Ave NE, Suite 200Cedar Rapids, IA 52402 (319) 391‑5501
Group practices
Medicare enrollment lists Sunny H. Zhang as a member of this group (CMS data updated October 2, 2026).
- Ob-Gyn Associates PC17 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Cedar Rapids
Clinicians with the same Medicare primary specialty in Cedar Rapids, IA — not a recommendation.
Other clinicians in Ob-Gyn Associates PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1989 (37 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568466118 |
| 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