Ilsong Jason Chong, M.D.
Geriatric Medicine · Internal Medicine (CMS) · Oceanside, CA
At a glance
605 Crouch St Bldg C, Oceanside, CA 92054-4415
Published activity: Removal of skin lesions. View counts and coverage
NPPES record updated Mar 17, 2018. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
605 Crouch St Bldg COceanside, CA 92054-4415
Additional reported practice locations
2410 Ella BlvdSuite B
Houston, TX 770082710
Phone: 7138615000
Fax: 7138615040
Education & affiliations
- Medical / professional school
- University Of Texas Medical School At Houston
- Graduation year
- 1992
- CMS specialties
- Geriatric Medicine · Internal Medicine
Practice groups
Reported hospital affiliations
- Tri-City Medical Center Oceanside, CA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Removal of skin lesions | 1-10 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $75.81 |
Reporting companies
| Company | Amount |
|---|---|
| ABBVIE INC. | $28.24 |
| BSN MEDICAL INC | $16.86 |
| BAYER HEALTHCARE PHARMACEUTICALS INC. | $16.40 |
| LILLY USA, LLC | $14.31 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Geriatric Medicine · Internal Medicine (CMS)
- Taxonomy code
- 207RG0300X
- Enumeration date
- Jan 15, 2007
- Record updated
- Mar 17, 2018
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207RG0300X
License reported: K4025 TX
207RG0300X · Primary
License reported: C152937 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
605 Crouch St Bldg COceanside, CA 92054-4415
- Phone
- (760) 736-6767
- Fax
- (760) 736-8740
Mailing address
605 CROUCH ST BLDG COCEANSIDE, CA 920544415
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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