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CHARIS GERALDINE TJOENG DO
NPI 1740818715
Internal Medicine in Torrance, CA

Active since March 27, 2020PECOS Enrolled
1000 W CARSON ST, TORRANCE, CA 90502(424) 306-4000 Get Directions Write a Review

NPPES record last updated: September 22, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Charis Geraldine Tjoeng Do NPPES

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

CHARIS GERALDINE TJOENG DO (NPI 1740818715) is an individual internal medicine provider in Torrance, California, licensed in California (20878) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS and is a graduate of Other (2020).

NPPES Registry Identity

NPI1740818715
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameCHARIS GERALDINE TJOENGCredential: DO
Location Address1000 W CARSON STTorrance, CA 90502-3321
Mailing Address1000 W Carson StTorrance, CA 90502 · (424) 306-4000
Phone(424) 306-4000
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateMarch 27, 2020
Last NPPES UpdateSeptember 22, 2025
NPPES CertifiedSeptember 22, 2025
✔ NPI 1740818715 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 20878
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1000 W CARSON ST, Torrance, CA 90502
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Other Names 1

Former Name (1)Geraldine Charis Tjoeng Do

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Charis Geraldine Tjoeng Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2466957691
PECOS Enrollment IDI20250926002259, I20260603002762
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Charis Tjoeng reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Martin Luther King Jr Community Medical Foundation
6.1 mi
Multi-Specialty
131 E COMPTON BLVD
Compton, CA 90220
  • Reassigned Medicare billing, California enrollment
  • 554 clinicians in this Medicare group
NPI 1306496641 (424) 529-6755
Access Telecare, PLLC
1,244 mi
Internal Medicine
1717 MAIN ST STE 5850
Dallas, TX 75201
  • Reassigned Medicare billing, Arizona, Idaho, Montana and New Mexico enrollments
  • 161 clinicians in this Medicare group
NPI 1013303080 (972) 449-0540

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90502 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

Other Providers at the Same Location NPPES 20

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

MISS BRITTANY IRVINE M.A.
Student in an Organized Health Care Education/Training Program
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-2345
DEPAREMENT OF MANTAL HEALTH
Case Management
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-1648
DINA M MEZA
Nurse Practitioner (Family)
1000 W CARSON ST, HEAD AND NECK BOX 6
TORRANCE, CA 90502
Los Angeles County (310) 222-2741
MARIA GUADALUPE VALADEZ
Student in an Organized Health Care Education/Training Program
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (559) 789-1327
ESTEBAN COTA
Specialist
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-2345
MS. DAWN MARIE TLUSTY RN
Registered Nurse (Infusion Therapy)
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-1906
DR. NICOLE MOORE MD
Student in an Organized Health Care Education/Training Program
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-2345
KENTON YUJI SAKURAI
Psychiatry & Neurology (Psychiatry)
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (424) 306-4000

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 Charis Tjoeng's NPI number?

The NPI number for Charis Tjoeng is 1740818715. It was assigned to this individual provider in the NPPES registry on March 27, 2020. The provider is also known as Geraldine Charis Tjoeng Do.

Where is Charis Tjoeng located?

Charis Tjoeng practices at 1000 W Carson St, Torrance, CA 90502. The listed phone number is (424) 306-4000.

What is Charis Tjoeng's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Charis Tjoeng enrolled in Medicare?

Yes. Charis Tjoeng is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Charis Tjoeng's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Charis Tjoeng reassigns Medicare benefits to 2 organizations: Martin Luther King Jr Community Medical Foundation (Compton, CA) and Access Telecare, PLLC (Dallas, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Charis Tjoeng's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Charis Tjoeng was last updated on September 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.