Bill Kaloostian, M.D.
Internal Medicine Physician · Los Angeles, CA
Bill Kaloostian, M.D. is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1184842197, issued on Apr 23, 2007. Check the license (California A40261, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Bill Kaloostian
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A40261 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2242 Cheswic LN, Los Angeles, CA 90027
- Phone
- (323) 663-7986
- Enumerated
- Apr 23, 2007
- Record last updated
- Oct 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Bill Kaloostian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A40261Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
307 Medicare Part D claims for 157 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Albuterol Sulfate Hfa32 claims
- Salsalate32 claims
- Azithromycin29 claims
- Ciprofloxacin Hcl21 claims
- Dicyclomine Hcl11 claims
- Lisinopril11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bill Kaloostian among 17,696 internal medicine physician records in California
Bill Kaloostian, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,423 internal medicine physician records list a practice address in Los Angeles
They are 1,423 of the 69,537 NPPES records with a practice address in Los Angeles, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Los Angeles → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sangeeta Aggarwal, MDLos Angeles, CA 900271578655908
- Hagop Bezikian, MDLos Angeles, CA 900271821171604
- Roshanak Eftekhari, M.D.Los Angeles, CA 900271619936556
- Martin Hirsch, MDLos Angeles, CA 900271881765774
- Missak Kltchian, MDLos Angeles, CA 900271255359840
- Ani Markarian, M.D.Los Angeles, CA 900271457305435
- Lyn Pestana, MDLos Angeles, CA 900271013088996
- Edward Quiming, MDLos Angeles, CA 900271497826465
Common questions
What is Bill Kaloostian, M.D.'s NPI number?
Bill Kaloostian, M.D.'s National Provider Identifier (NPI) is 1184842197, issued on Apr 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Bill Kaloostian, M.D. located?
The NPPES record lists a practice address at 2242 Cheswic LN, Los Angeles, CA, 90027. Phone: (323) 663-7986. Providers update this record themselves, so call before visiting.
How can I verify Bill Kaloostian, M.D.'s license?
NPPES lists California license number A40261, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Bill Kaloostian, M.D. prescribe under Medicare Part D?
In 2024, Bill Kaloostian, M.D. had 307 Medicare Part D claims for 157 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.