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DR. LOUIS CLAYTON SIMPSON JR. M.D.
NPI 1710012695
Psychiatry & Neurology - Psychiatry in Los Angeles, CA

Active since February 22, 2007PECOS Enrolled
3756 SANTA ROSALIA DR, LOS ANGELES, CA 90008(323) 299-1262(323) 299-1273 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Louis Clayton Simpson Jr. M.d. NPPES

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

DR. LOUIS CLAYTON SIMPSON JR. M.D. (NPI 1710012695) is an individual psychiatry provider in Los Angeles, California, licensed in California (A25794) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1710012695
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. LOUIS CLAYTON SIMPSON JR.Credential: M.D.
Location Address3756 SANTA ROSALIA DRLos Angeles, CA 90008-3606
Mailing Address4572 Don Milagro DrLos Angeles, CA 90008-2834 · (323) 298-0273 · Fax (323) 299-1273
Phone(323) 299-1262
Fax(323) 299-1273
Sole ProprietorYes
Enumeration DateFebruary 22, 2007
Last NPPES UpdateMarch 7, 2023
✔ NPI 1710012695 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · A25794
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
3756 SANTA ROSALIA DR, Los Angeles, CA 90008
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Other Identifiers 2

MedicaidA257940CA
Other56402CA · Board Certification

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. Louis Clayton Simpson Jr. 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 90008 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
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
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.

ELISA SHANAE OWENS
Counselor (Addiction (Substance Use Disorder))
3756 SANTA ROSALIA DR, SUITE 507
LOS ANGELES, CA 90008
Los Angeles County (323) 290-2001
MRS. CARRIE W KUMABE OD
Optometrist
3756 SANTA ROSALIA DR, SUITE 100
LOS ANGELES, CA 90008
Los Angeles County (323) 294-7517
MAXIN HEALTHCARE SERVICES INC.
Clinic/Center (Adult Day Care)
3756 SANTA ROSALIA DR, SUITE 326A
LOS ANGELES, CA 90008
Los Angeles County (323) 290-1360
ROWENA LUMINARIAS
Marriage & Family Therapist
3756 SANTA ROSALIA DR
LOS ANGELES, CA 90008
Los Angeles County (626) 608-2624
DR. KIM AUSTIN D.D.S.
Dentist (Periodontics)
3756 SANTA ROSALIA DR, SUITE #500
LOS ANGELES, CA 90008
Los Angeles County (323) 294-1170
AMY IWATA DDS INC
Dentist
3756 SANTA ROSALIA DR, STE 504
LOS ANGELES, CA 90008
Los Angeles County (323) 293-6188
MACHARA LYNETTE HOGUE CMT
Massage Therapist
3756 SANTA ROSALIA DR
LOS ANGELES, CA 90008
Los Angeles County (562) 774-3373
CLYDE T ARNOLD
General Practice
3756 SANTA ROSALIA DR, SUITE 512
LOS ANGELES, CA 90008
Los Angeles County (323) 291-6432

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 Louis Simpson's NPI number?

The NPI number for Louis Simpson is 1710012695. It was assigned to this individual provider in the NPPES registry on February 22, 2007.

Where is Louis Simpson located?

Louis Simpson practices at 3756 Santa Rosalia Dr, Los Angeles, CA 90008. The listed phone number is (323) 299-1262.

What is Louis Simpson's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Louis Simpson enrolled in Medicare?

Yes. Louis Simpson is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Louis Simpson was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.