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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.

DR. STUART L. WILLSON M.D.
NPI 1841262045
Internal Medicine in Los Angeles, CA

Active since February 02, 2006PECOS Enrolled
1136 W 6TH ST, SUITE 307, LOS ANGELES, CA 90017(213) 977-1144(213) 482-2182 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Stuart L. Willson M.d. NPPES

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

DR. STUART L. WILLSON M.D. (NPI 1841262045) is an individual internal medicine provider in Los Angeles, California, licensed in California (G52677) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1841262045
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. STUART L. WILLSONCredential: M.D.
Location Address1136 W 6TH ST, SUITE 307Los Angeles, CA 90017-1805
Mailing Address1136 W 6th St, Suite 307Los Angeles, CA 90017-1805 · (213) 977-1144 · Fax (213) 482-2182
Phone(213) 977-1144
Fax(213) 482-2182
Sole ProprietorNo
Enumeration DateFebruary 2, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1841262045 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 · G52677
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.
1136 W 6TH ST, Los Angeles, CA 90017
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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)

Dr. Stuart L. Willson M.d. 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 90017 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 3

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

DR. GLENN E HATFIELD M.D.
Internal Medicine
1136 W 6TH ST, SUITE 307
LOS ANGELES, CA 90017
Los Angeles County (213) 977-1138
DR. TERRY P JERGE M.D.
Internal Medicine
1136 W 6TH ST, SUITE 307
LOS ANGELES, CA 90017
Los Angeles County (213) 977-1138
DR. JOANNA MARIE DAVIES M.D.
Internal Medicine (Rheumatology)
1136 W 6TH ST, #307
LOS ANGELES, CA 90017
Los Angeles County (213) 977-1144

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 Stuart Willson's NPI number?

The NPI number for Stuart Willson is 1841262045. It was assigned to this individual provider in the NPPES registry on February 2, 2006.

Where is Stuart Willson located?

Stuart Willson practices at 1136 W 6th St Suite 307, Los Angeles, CA 90017. The listed phone number is (213) 977-1144.

What is Stuart Willson's specialty?

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

Is Stuart Willson enrolled in Medicare?

Yes. Stuart Willson is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Stuart Willson was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 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.