Quick answers
- Does Jeffrey Y. Wong accept Medicare assignment?
- Yes. Medicare's clinician data says Jeffrey Y. Wong 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 Jeffrey Y. Wong see?
- In 2024, CMS data shows 199 Original Medicare patients and 1,531 services for Jeffrey Y. Wong. This counts Original Medicare only and measures volume, not quality.
- What is Jeffrey Y. Wong's NPI number?
- 1699707893. 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 Jeffrey Y. Wong, 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 | 199 |
|---|---|
| Services billed to Medicare | 1,531 |
| Different services or procedures | 30 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Ct guidance for insertion of radiation therapy fields (77014)572 services
- Calculation of radiation therapy dose (77300)191 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)148 services
- Radiation treatment management, 5 treatment sessions (77427)129 services
- Design and construction of complex radiation treatment device (77334)98 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%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
- High cholesterol73%
- Arthritis41%
- Ischemic heart disease32%
- Diabetes28%
Practice locations
Addresses where Jeffrey Y. Wong is enrolled with Medicare (CMS data updated October 2, 2026).
- 1500 Duarte RdDuarte, CA 91010 (626) 256‑4673
- 1500 E Duarte RdDuarte, CA 91010
- 209 Fair Oaks AveSouth Pasadena, CA 91030 (626) 396‑2900
Group practices
Medicare enrollment lists Jeffrey Y. Wong as a member of this group (CMS data updated October 2, 2026).
- City of Hope Medical Foundation982 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Duarte
Clinicians with the same Medicare primary specialty in Duarte, CA — not a recommendation.
Other clinicians in City of Hope Medical Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Johns Hopkins University School Of Medicine |
| Graduation year | 1981 (45 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699707893 |
| 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