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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.

LAWRENCE MATSUO OKUMOTO
NPI 1902546906
Internal Medicine in Lancaster, CA

Active since March 30, 2022PECOS Enrolled
45104 10TH ST W, LANCASTER, CA 93534(503) 494-7735(503) 494-4264 Get Directions Write a Review

NPPES record last updated: September 11, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Sep 11, 2026, May 29, 2025 (2 updates tracked since 2025).

About Lawrence Matsuo Okumoto NPPES

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

LAWRENCE MATSUO OKUMOTO (NPI 1902546906) is an individual internal medicine provider in Lancaster, California, licensed in California (A-201117) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1902546906
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameLAWRENCE MATSUO OKUMOTO
Location Address45104 10TH ST WLancaster, CA 93534-2310
Mailing Address1700 Mount Vernon AveBakersfield, CA 93306-4018 · (661) 326-2200 · Fax (661) 326-2950
Phone(503) 494-7735
Fax(503) 494-4264
Sole ProprietorNo
Enumeration DateMarch 30, 2022
Last NPPES UpdateSeptember 11, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 11, 2026
✔ NPI 1902546906 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 · A-201117
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.
45104 10TH ST W, Lancaster, CA 93534
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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)

Lawrence Matsuo Okumoto 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 93534 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.

BASIL MUBARKEH
Optometrist
45104 10TH ST W
LANCASTER, CA 93534
Los Angeles County (661) 941-9543
PAOLA AZUCENA BAUTISTA CPHW
Counselor
45104 10TH ST W
LANCASTER, CA 93534
Los Angeles County (661) 948-1228
DR. QIYUAN DAI MD
Internal Medicine
45104 10TH ST W
LANCASTER, CA 93534
Los Angeles County (661) 942-2391
TESSINY IRIARTE HOLLIDAY FNP-C
Family Medicine
45104 10TH ST W
LANCASTER, CA 93534
Los Angeles County (661) 942-2391
ANTELOPE VALLEY PARTNERS FOR HEALTH
Case Management
45104 10TH ST W
LANCASTER, CA 93534
Los Angeles County (661) 942-4719
SUTTIRAK CHAIWONGKARJOHN
Specialist
45104 10TH ST W
LANCASTER, CA 93534
Los Angeles County (661) 942-2391
ANA ALEJANDRA GUILLEN
Case Manager/Care Coordinator
45104 10TH ST W
LANCASTER, CA 93534
Los Angeles County (661) 942-2391
LAURA MARTINEZ
Obstetrics & Gynecology (Obstetrics)
45104 10TH ST W
LANCASTER, CA 93534
Los Angeles County (661) 941-9543

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 Lawrence Okumoto's NPI number?

The NPI number for Lawrence Okumoto is 1902546906. It was assigned to this individual provider in the NPPES registry on March 30, 2022.

Where is Lawrence Okumoto located?

Lawrence Okumoto practices at 45104 10th St W, Lancaster, CA 93534. The listed phone number is (503) 494-7735.

What is Lawrence Okumoto's specialty?

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

Is Lawrence Okumoto enrolled in Medicare?

Yes. Lawrence Okumoto is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Lawrence Okumoto was last updated on September 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.