1. Home
  2. Directory
  3. California
  4. Oceanside
  5. Internal Medicine
  6. NPI Profile

DR. ILSONG JASON CHONG M.D.
NPI 1831240159
Internal Medicine - Geriatric Medicine in Oceanside, CA

Active since January 15, 2007PECOS EnrolledAccepts Medicare Assignment
605 CROUCH ST BLDG C, OCEANSIDE, CA 92054(760) 736-6767(760) 736-8740 Get Directions Write a Review

NPPES record last updated: March 17, 2018. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Ilsong Jason Chong M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ILSONG JASON CHONG M.D. (NPI 1831240159) is an individual geriatric medicine provider in Oceanside, California, licensed in California (C152937) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, maintains a secondary practice location in Houston, and is a graduate of University Of Texas Medical School At Houston (1992).

NPPES Registry Identity

NPI1831240159
Entity TypeIndividualMale
Primary Taxonomy207RG0300X
Provider Legal NameDR. ILSONG JASON CHONGCredential: M.D.
Location Address605 CROUCH ST BLDG COceanside, CA 92054-4415
Mailing Address605 Crouch St Bldg COceanside, CA 92054-4415 · (760) 736-6767 · Fax (760) 736-8740
Phone(760) 736-6767
Fax(760) 736-8740
Sole ProprietorNo
Medical School CMSUniversity Of Texas Medical School At HoustonGraduated 1992
Enumeration DateJanuary 15, 2007
Last NPPES UpdateMarch 17, 2018
✔ NPI 1831240159 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
Licenses✔ Licensed in CA · C152937✔ Licensed in TX · K4025
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
605 CROUCH ST BLDG C, Oceanside, CA 92054
Open in Google Maps ↗

Secondary Practice Location 1

Location 12410 Ella Blvd, SUITE BHouston, TX 77008-2710 · Phone (713) 861-5000 · Fax (713) 861-5040

Other Identifiers 2

Medicaid047274802TX
Other0089HLTX · Bluecross Blueshield

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Imperial Insurance Companies, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ilsong Jason Chong M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5597808345
PECOS Enrollment IDI20180208002772
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
60 services39 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
34 services23 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92054 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$184.71 typical visit price
range $62.10 – $184.71
Typical copayment $46.17 (range $15.52 – $46.17)
Most-billed visit code 99205
Established Patient
$108.42 typical visit price
range $20.62 – $151.42
Typical copayment $27.10 (range $5.15 – $37.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
2 suppliers26 claims26 services$187.02 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ELIZABETH ANN DINGBAUM PA
Physician Assistant (Medical)
605 CROUCH ST BLDG C
OCEANSIDE, CA 92054
San Diego County (760) 736-6767
NICOLE WILLIAMS CATC-IV, LCSW
Social Worker
605 CROUCH ST BLDG C
OCEANSIDE, CA 92054
San Diego County (760) 736-6767
ELENA ROSA RAMOS PA-C
Physician Assistant
605 CROUCH ST BLDG C
OCEANSIDE, CA 92054
San Diego County (760) 736-6767
DENISE GOMEZ M.D
Internal Medicine
605 CROUCH ST BLDG C
OCEANSIDE, CA 92054
San Diego County (760) 757-4566
GABRIELLE MARKIE NORD PA-C
Physician Assistant
605 CROUCH ST BLDG C
OCEANSIDE, CA 92054
San Diego County (760) 736-6767
NORTH COUNTY HEALTH PROJECT, INC.
Clinic/Center (Federally Qualified Health Center (FQHC))
605 CROUCH ST BLDG C
OCEANSIDE, CA 92054
San Diego County (760) 757-4566

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ilsong Chong's NPI number?

The NPI number for Ilsong Chong is 1831240159. It was assigned to this individual provider in the NPPES registry on January 15, 2007.

Where is Ilsong Chong located?

Ilsong Chong practices at 605 Crouch St Bldg C, Oceanside, CA 92054. The listed phone number is (760) 736-6767.

What is Ilsong Chong's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is Ilsong Chong enrolled in Medicare?

Yes. Ilsong Chong is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Ilsong Chong accept?

Health plans from Imperial Insurance Companies, Inc. list Ilsong Chong as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Ilsong Chong was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.