DR. ELAINE JI-YUN DEEMER DO
NPI 1649856162
Internal Medicine - Geriatric Medicine in Torrance, CA

Q: What is Elaine Deemer's NPI number?

The NPI number for Elaine Deemer is 1649856162. It was assigned to this individual provider in the NPPES registry on March 23, 2021.

Q: What is Elaine Deemer's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Elaine Deemer was last updated on September 7, 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.

Active since March 23, 2021PECOS EnrolledAccepts Medicare Assignment

3400 LOMITA BLVD STE 500, TORRANCE, CA 90505(310) 325-9110 Get Directions Write a Review

NPPES record last updated: September 7, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 7, 2025, Jun 10, 2025, Jul 1, 2024 and 1 more (4 updates tracked since 2021).

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About Dr. Elaine Ji-yun Deemer Do NPPES

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

DR. ELAINE JI-YUN DEEMER DO (NPI 1649856162) is an individual geriatric medicine provider in Torrance, California, licensed in California (1649856162) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS and is a graduate of Liberty Univ College Of Osteopathic Medicine (2021).

NPPES Registry Identity

NPI1649856162

Entity TypeIndividualFemale

Primary Taxonomy207RG0300X

Provider Legal NameDR. ELAINE JI-YUN DEEMERCredential: DO

Location Address3400 LOMITA BLVD STE 500Torrance, CA 90505-4931

Mailing Address3400 Lomita Blvd Ste 500Torrance, CA 90505-4931 · (310) 325-9110

Phone(310) 325-9110

Sole ProprietorNo

Medical School CMSLiberty Univ College Of Osteopathic MedicineGraduated 2021

Enumeration DateMarch 23, 2021

Last NPPES UpdateSeptember 7, 20254 updates tracked since enumeration

NPPES CertifiedSeptember 7, 2025

✔ NPI 1649856162 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RG0300X

License✔ Licensed in CA · 1649856162

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.

3400 LOMITA BLVD STE 500, Torrance, CA 90505

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Elaine Ji-yun Deemer Do 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 ID6608376132

PECOS Enrollment IDI20250820003210

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 Reassignment

Medicare enrollment records show Elaine Deemer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Torrance Health Association Inc

0.1 mi

Family Medicine

3333 SKYPARK DR, SUITE 100
Torrance, CA 90505

Reassigned Medicare billing, California enrollment
388 clinicians in this Medicare group

NPI 1083903124 (310) 784-6300

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 90505 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

$187.60 typical visit price

range $62.96 – $187.60

Typical copayment $46.90 (range $15.74 – $46.90)

Most-billed visit code 99205

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

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

STUART R GRANT, MD

Internal Medicine (Gastroenterology)

3400 LOMITA BLVD STE 500
TORRANCE, CA 90505

Los Angeles County (310) 914-9150

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 Elaine Deemer's NPI number?

The NPI number for Elaine Deemer is 1649856162. It was assigned to this individual provider in the NPPES registry on March 23, 2021.

Where is Elaine Deemer located?

Elaine Deemer practices at 3400 Lomita Blvd Ste 500, Torrance, CA 90505. The listed phone number is (310) 325-9110.

What is Elaine Deemer's specialty?

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

Is Elaine Deemer enrolled in Medicare?

Yes. Elaine Deemer 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.

Which organization bills Medicare for Elaine Deemer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elaine Deemer reassigns Medicare benefits to Torrance Health Association Inc (Torrance, CA). The 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 Elaine Deemer'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 Elaine Deemer was last updated on September 7, 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.