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DR. ROBERT LARSEN
NPI 1285789958
Internal Medicine - Infectious Disease in Los Angeles, CA

Active since January 24, 2007PECOS Enrolled
1200 N STATE ST, LOS ANGELES, CA 90033(323) 226-2170(323) 226-5760 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Robert Larsen NPPES

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

DR. ROBERT LARSEN (NPI 1285789958) is an individual infectious disease provider in Los Angeles, California, licensed in California (G42332) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1285789958
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDR. ROBERT LARSEN
Location Address1200 N STATE STLos Angeles, CA 90033-1029
Mailing Address1200 N State StLos Angeles, CA 90033-1029 · (323) 226-2170 · Fax (323) 226-5760
Phone(323) 226-2170
Fax(323) 226-5760
Sole ProprietorNo
Enumeration DateJanuary 24, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1285789958 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in CA · G42332
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
1200 N STATE ST, Los Angeles, CA 90033
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Other Identifiers 4

Medicare ID-Type UnspecifiedW809FCA · El Monte
Medicare ID-Type UnspecifiedW809ACA · Roybal
Medicare ID-Type UnspecifiedW932CA · Health Center
Medicare ID-Type UnspecifiedW809BCA · Hudson

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. Robert Larsen 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 90033 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.

DR. LUCILLE CHAILLE
Orthopaedic Surgery
1200 N STATE ST
LOS ANGELES, CA 90033
Los Angeles County (323) 226-2170
DR. THIENDANG VIET NGUYEN M.D.
Anesthesiology
1200 N STATE ST, #14-901
LOS ANGELES, CA 90033
Los Angeles County (323) 409-7748
DR. PHIL ORALLO CASTILLO M.D.
Anesthesiology
1200 N STATE ST, ROOM 14-901
LOS ANGELES, CA 90033
Los Angeles County (323) 226-4597
NOA CARTER STERLING M.D.
Obstetrics & Gynecology
1200 N STATE ST, INPT TOWER C3F107
LOS ANGELES, CA 90033
Los Angeles County (323) 409-8847
CHRYSTAL LYNNE JONES RCP
Respiratory Therapist, Certified (Critical Care)
1200 N STATE ST
LOS ANGELES, CA 90033
Los Angeles County (323) 409-1000
MAY SUNDONGMEI WU RESP THERAPIST
Respiratory Therapist, Registered (Critical Care)
1200 N STATE ST
LOS ANGELES, CA 90033
Los Angeles County (323) 409-1824
BRETT BARRO
Student in an Organized Health Care Education/Training Program
1200 N STATE ST, CLINIC TOWER SUITE A7D
LOS ANGELES, CA 90033
Los Angeles County (213) 705-5282
ALBERT CHEN MD
Student in an Organized Health Care Education/Training Program
1200 N STATE ST, CLINIC TOWER, SUITE A7D
LOS ANGELES, CA 90033
Los Angeles County (323) 442-7686

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 Robert Larsen's NPI number?

The NPI number for Robert Larsen is 1285789958. It was assigned to this individual provider in the NPPES registry on January 24, 2007.

Where is Robert Larsen located?

Robert Larsen practices at 1200 N State St, Los Angeles, CA 90033. The listed phone number is (323) 226-2170.

What is Robert Larsen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Robert Larsen enrolled in Medicare?

Yes. Robert Larsen is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Robert Larsen was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.