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DR. BILL KALOOSTIAN M.D.
NPI 1184842197
Internal Medicine in Los Angeles, CA

Active since April 23, 2007PECOS Enrolled
2242 CHESWIC LN, LOS ANGELES, CA 90027(323) 663-7986 Get Directions Write a Review

NPPES record last updated: October 13, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Bill Kaloostian M.d. NPPES

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

DR. BILL KALOOSTIAN M.D. (NPI 1184842197) is an individual internal medicine provider in Los Angeles, California, licensed in California (A40261) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1184842197
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. BILL KALOOSTIANCredential: M.D.
Location Address2242 CHESWIC LNLos Angeles, CA 90027-1134
Mailing Address2242 Cheswic LnLos Angeles, CA 90027-1134 · (323) 663-7986
Phone(323) 663-7986
Sole ProprietorYes
Enumeration DateApril 23, 2007
Last NPPES UpdateOctober 13, 2021
NPPES CertifiedOctober 13, 2021
✔ NPI 1184842197 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 · A40261
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.
2242 CHESWIC LN, Los Angeles, CA 90027
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Other Names 1

Professional Name (2)William Kaloostian

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Bill Kaloostian 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.

Medicare Billing Reassignment

Medicare enrollment records show Bill Kaloostian reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group
1.0 mi
Health Maintenance Organization
4760 W SUNSET BLVD
Los Angeles, CA 90027
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1134151657 (323) 783-4011

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90027 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.

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 Bill Kaloostian's NPI number?

The NPI number for Bill Kaloostian is 1184842197. It was assigned to this individual provider in the NPPES registry on April 23, 2007. The provider is also known as William Kaloostian.

Where is Bill Kaloostian located?

Bill Kaloostian practices at 2242 Cheswic Ln, Los Angeles, CA 90027. The listed phone number is (323) 663-7986.

What is Bill Kaloostian's specialty?

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

Is Bill Kaloostian enrolled in Medicare?

Yes. Bill Kaloostian is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Bill Kaloostian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Bill Kaloostian reassigns Medicare benefits to Southern California Permanente Medical Group (Los Angeles, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Bill Kaloostian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Bill Kaloostian was last updated on October 13, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.