Quick answers
- Does Jean S. Ying-Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Jean S. Ying-Chang 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 Jean S. Ying-Chang see?
- In 2024, CMS data shows 29 Original Medicare patients and 168 services for Jean S. Ying-Chang. This counts Original Medicare only and measures volume, not quality.
- What is Jean S. Ying-Chang's NPI number?
- 1386670800. 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 Jean S. Ying-Chang, 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 | 29 |
|---|---|
| Services billed to Medicare | 168 |
| Different services or procedures | 2 |
| Participating Medicare provider | Yes |
| Average age of these patients | 61 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)72 services
- Telephone medical discussion with physician, 21-30 minutes (99443)61 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).
- Anxiety75%
- High cholesterol72%
- Depression55%
- High blood pressure48%
Hospitals where Jean S. Ying-Chang works
Medicare's Facility Affiliation Data lists Jean S. Ying-Chang 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.
- Ahs Hospital CorpHackettstown, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310115
- St Luke's Warren HospitalPhillipsburg, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310060
Practice locations
Addresses where Jean S. Ying-Chang is enrolled with Medicare (CMS data updated October 2, 2026).
- 108 Bilby Rd, Suite 302Hackettstown, NJ 07840 (908) 852‑0333
- 492 Route 57 WWashington, NJ 07882 (908) 689‑1000
Group practices
Medicare enrollment lists Jean S. Ying-Chang as a member of this group (CMS data updated October 2, 2026).
- Center for Family Services Inc16 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in New Jersey
Clinicians with the same Medicare primary specialty in New Jersey — not a recommendation.
Other clinicians in Center for Family Services Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tulane University School Of Medicine |
| Graduation year | 1992 (34 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1386670800 |
| 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