DIANE E. TJORNHOM MD
NPI 1649339235
Internal Medicine - Rheumatology in Bellflower, CA

Active since December 08, 2006PECOS EnrolledAccepts Medicare Assignment
9400 ROSECRANS AVE, BELLFLOWER, CA 90706(562) 461-3000 Get Directions Write a Review

NPPES record last updated: November 29, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Diane E. Tjornhom Md NPPES

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

DIANE E. TJORNHOM MD (NPI 1649339235) is an individual rheumatology provider in Bellflower, California, licensed in California (G73827) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1989).

NPPES Registry Identity

NPI1649339235
Entity TypeIndividualFemale
Primary Taxonomy207RR0500X
Provider Legal NameDIANE E. TJORNHOMCredential: MD
Location Address9400 ROSECRANS AVEBellflower, CA 90706-2246
Mailing Address9400 Rosecrans AveBellflower, CA 90706-2246 · (562) 461-3000
Sole ProprietorNo
Medical School CMSOtherGraduated 1989
Enumeration DateDecember 8, 2006
Last NPPES UpdateNovember 29, 2021
NPI 1649339235 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License Licensed in CA · G73827
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
9400 ROSECRANS AVE, Bellflower, CA 90706

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

Diane E. Tjornhom Md 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 ID5698891794
PECOS Enrollment IDI20100927000601
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90706 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.

Pharmacist
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Specialist
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Otolaryngology (Plastic Surgery within the Head & Neck)
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Internal Medicine
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Optometrist
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Podiatrist (Foot & Ankle Surgery)
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Surgery (Vascular Surgery)
9400 ROSECRANS AVE
BELLFLOWER, CA 90706
Neuromusculoskeletal Medicine & OMM
9400 ROSECRANS AVE
BELLFLOWER, CA 90706

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 Diane Tjornhom's NPI number?

The NPI number for Diane Tjornhom is 1649339235. It was assigned to this individual provider in the NPPES registry on December 8, 2006.

Where is Diane Tjornhom located?

Diane Tjornhom practices at 9400 Rosecrans Ave, Bellflower, CA 90706. The listed phone number is (562) 461-3000.

What is Diane Tjornhom's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Diane Tjornhom enrolled in Medicare?

Yes. Diane Tjornhom 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.

When was this NPI record last updated?

The NPPES record for Diane Tjornhom was last updated on November 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.