Quick answers
- Does Chien-Jung J. Chu accept Medicare assignment?
- Yes. Medicare's clinician data says Chien-Jung J. Chu 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 Chien-Jung J. Chu see?
- In 2024, CMS data shows 176 Original Medicare patients and 433 services for Chien-Jung J. Chu. This counts Original Medicare only and measures volume, not quality.
- What is Chien-Jung J. Chu's NPI number?
- 1245281310. 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 Chien-Jung J. Chu, 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 | 176 |
|---|---|
| Services billed to Medicare | 433 |
| Different services or procedures | 45 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)107 services
- Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza (87428)48 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)41 services
- X-ray of chest, 2 views (71046)34 services
- Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) (87880)23 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 pressure68%
- Arthritis53%
- Diabetes28%
- Anxiety21%
- Osteoporosis20%
Practice locations
Addresses where Chien-Jung J. Chu is enrolled with Medicare (CMS data updated October 2, 2026).
- 7425 Grand AveElmhurst, NY 11373 (718) 803‑2273
Group practices
Medicare enrollment lists Chien-Jung J. Chu as a member of this group (CMS data updated October 2, 2026).
- City Medical of Upper East Side PLLC658 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Elmhurst
Clinicians with the same Medicare primary specialty in Elmhurst, NY — not a recommendation.
Other clinicians in City Medical of Upper East Side PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Icahn School Of Medicine At Mount Sinai |
| Graduation year | 1998 (28 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245281310 |
| 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
- 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