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LESLIE GRAUSTARK OESTERICH
NPI 1245518422
Internal Medicine in Torrance, CA

Active since July 22, 2011PECOS EnrolledAccepts Medicare Assignment
1000 W CARSON ST., BOX 400, TORRANCE, CA 90509(310) 222-2401 Get Directions Write a Review

NPPES record last updated: February 11, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Leslie Graustark Oesterich NPPES

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

LESLIE GRAUSTARK OESTERICH (NPI 1245518422) is an individual internal medicine provider in Torrance, California, licensed in California (A125675) and active in the NPI registry since July 2011. She is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2011).

NPPES Registry Identity

NPI1245518422
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameLESLIE GRAUSTARK OESTERICH
Location Address1000 W CARSON ST., BOX 400Torrance, CA 90509
Mailing Address1000 W Carson St., Box 400Torrance, CA 90509
Phone(310) 222-2401
Sole ProprietorYes
Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 2011
Enumeration DateJuly 22, 2011
Last NPPES UpdateFebruary 11, 2022
✔ NPI 1245518422 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 · A125675
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.
1000 W CARSON ST., Torrance, CA 90509
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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 and accepts Medicare assignment

Leslie Graustark Oesterich 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 ID9032334818
PECOS Enrollment IDI20140711000015
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 90509 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 8

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

FRANCES L CHIANG MD
Radiology (Neuroradiology)
1000 W CARSON ST., BOX 480
TORRANCE, CA 90509
Los Angeles County (310) 222-5026
LISA A CHUNG M.D.
Internal Medicine
1000 W CARSON ST.
TORRANCE, CA 90509
Los Angeles County (310) 222-2409
SHARAREH SHAHANGIAN
Internal Medicine (Critical Care Medicine)
1000 W CARSON ST., BOX 400
TORRANCE, CA 90509
Los Angeles County (310) 222-2401
DR. DAVID JOSEPH TAWFIK MD
Internal Medicine
1000 W CARSON ST., BOX 400
TORRANCE, CA 90509
Los Angeles County (310) 222-2401
WAEL NOOR EL-NACHEF M.D.
Internal Medicine (Gastroenterology)
1000 W CARSON ST.
TORRANCE, CA 90509
Los Angeles County (310) 222-2409
DAVID YUCHNO M.D.
Student in an Organized Health Care Education/Training Program
1000 W CARSON ST., BOX 400
TORRANCE, CA 90509
Los Angeles County (310) 222-2409
ALBERT CESPEDES JR. M.D.
Internal Medicine
1000 W CARSON ST., 400
TORRANCE, CA 90509
Los Angeles County (310) 222-2409
CAROLINE MIRANDA LCSW
Social Worker
1000 W CARSON ST., BOX 498
TORRANCE, CA 90509
Los Angeles County (310) 222-4261

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 Leslie Oesterich's NPI number?

The NPI number for Leslie Oesterich is 1245518422. It was assigned to this individual provider in the NPPES registry on July 22, 2011.

Where is Leslie Oesterich located?

Leslie Oesterich practices at 1000 W Carson St. Box 400, Torrance, CA 90509. The listed phone number is (310) 222-2401.

What is Leslie Oesterich's specialty?

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

Is Leslie Oesterich enrolled in Medicare?

Yes. Leslie Oesterich 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 Leslie Oesterich was last updated on February 11, 2022. 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.