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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ALEX WILLIAM WESSEL MD, PHD
NPI 1598452849
Internal Medicine in Los Angeles, CA

Active since April 18, 2023PECOS Enrolled
6041 CADILLAC AVE, LOS ANGELES, CA 90034(323) 857-2000 Get Directions Write a Review

NPPES record last updated: September 24, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Alex William Wessel Md, Phd NPPES

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

ALEX WILLIAM WESSEL MD, PHD (NPI 1598452849) is an individual internal medicine provider in Los Angeles, California, licensed in California (A206601) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1598452849
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameALEX WILLIAM WESSELCredential: MD, PHD
Location Address6041 CADILLAC AVELos Angeles, CA 90034-1702
Mailing Address6041 Cadillac AveLos Angeles, CA 90034-1702 · (323) 857-2000
Phone(323) 857-2000
Sole ProprietorNo
Enumeration DateApril 18, 2023
Last NPPES UpdateSeptember 24, 2026
NPPES CertifiedSeptember 24, 2026
✔ NPI 1598452849 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 · A206601
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.
6041 CADILLAC AVE, Los Angeles, CA 90034
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alex William Wessel Md, Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 90034 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.

BENJAMIN M KALKIN SP
Speech-Language Pathologist
6041 CADILLAC AVE
LOS ANGELES, CA 90034
Los Angeles County (323) 857-2000
JACQUELINE A RICE CNM
Advanced Practice Midwife
6041 CADILLAC AVE
LOS ANGELES, CA 90034
Los Angeles County (323) 857-2000
DR. LINDA FONG M.D.
Internal Medicine (Cardiovascular Disease)
6041 CADILLAC AVE
LOS ANGELES, CA 90034
Los Angeles County (323) 857-3290
LINDA HAN PHARM.D.
Pharmacist
6041 CADILLAC AVE, KAISER WEST LOS ANGELES MEDICAL CENTER
LOS ANGELES, CA 90034
Los Angeles County (323) 857-3989
BRYAN HERNANDEZ MD
Internal Medicine
6041 CADILLAC AVE
LOS ANGELES, CA 90034
Los Angeles County (310) 666-6055
ALLAN CHEN MD
Internal Medicine
6041 CADILLAC AVE, INTERNAL MEDICINE MODULE 2D
LOS ANGELES, CA 90034
Los Angeles County (323) 857-3303
JOSEPHINE JUI-YU CHIU MD
Internal Medicine (Nephrology)
6041 CADILLAC AVE
LOS ANGELES, CA 90034
Los Angeles County (323) 857-2000
LICERIO V. CASTRO JR. MD
Anesthesiology
6041 CADILLAC AVE
LOS ANGELES, CA 90034
Los Angeles County (323) 857-2000

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 Alex Wessel's NPI number?

The NPI number for Alex Wessel is 1598452849. It was assigned to this individual provider in the NPPES registry on April 18, 2023.

Where is Alex Wessel located?

Alex Wessel practices at 6041 Cadillac Ave, Los Angeles, CA 90034. The listed phone number is (323) 857-2000.

What is Alex Wessel's specialty?

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

Is Alex Wessel enrolled in Medicare?

Yes. Alex Wessel is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Alex Wessel was last updated on September 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 50 days 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.