Quick answers
- Does Wengang Zhang accept Medicare assignment?
- Yes. Medicare's clinician data says Wengang 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 Wengang Zhang see?
- In 2024, CMS data shows 373 Original Medicare patients and 2,399 services for Wengang Zhang. This counts Original Medicare only and measures volume, not quality.
- What is Wengang Zhang's NPI number?
- 1063451243. 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 Wengang 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 | 373 |
|---|---|
| Services billed to Medicare | 2,399 |
| Different services or procedures | 39 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)731 services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)440 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)363 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)344 services
- Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)78 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%
- Diabetes47%
- Arthritis43%
- Heart failure40%
- Chronic kidney disease38%
Hospitals where Wengang Zhang works
Medicare's Facility Affiliation Data lists Wengang 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.
- John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050496
- Sutter Delta Medical CenterAntioch, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050523
Practice locations
Addresses where Wengang Zhang is enrolled with Medicare (CMS data updated October 2, 2026).
- 2220 Gladstone Dr, Suite 3Pittsburg, CA 94565 (925) 432‑3318
- 2400 Balfour Rd, Suite 306Brentwood, CA 94513 (925) 432‑3318
Group practices
Medicare enrollment lists Wengang Zhang as a member of this group (CMS data updated October 2, 2026).
- Pittsburg-Antioch Medical Group a Professional Corporation14 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Pittsburg
Clinicians with the same Medicare primary specialty in Pittsburg, CA — not a recommendation.
Other clinicians in Pittsburg-Antioch Medical Group a Professional Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1982 (44 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) | 1063451243 |
| 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