NPPES file of Aug 9, 2026

Ronald Ira Koslowski, DDS

Prosthodontics · Encino, CA

Ronald Ira Koslowski, DDS is a prosthodontics with a practice address in Encino, California, and NPI 1194870501, issued on Jan 24, 2007. Check the license (California 39291, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1194870501
Name
Ronald Ira Koslowski
Credential
DDS
Primary taxonomy
Prosthodontics 1223P0700X
License number
39291 CA
Self-reported in NPPES; status is on the state search
Practice location
16311 Ventura Blvd, Encino, CA 91436
Phone
(818) 986-9036
Enumerated
Jan 24, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 16311 Ventura Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. David Aizuss, M.D.Ophthalmology Physician1346221728
  2. Tiffani Bresnick, LCSWClinical Social Worker1083340467
  3. Norman Brooks, MDDermatology Physician1508960667
  4. Bijan Broukhim, M.D.Specialist1376584698
  5. Ricardo Campbell, P.A.Physician Assistant1811978828
  6. Maury Carlin, PH.D.Clinical Psychologist1427089358

Verify Ronald Ira Koslowski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 39291
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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88% fewer Medicare Part D claims than the average prosthodontics in 2024

11 Medicare Part D claims, against an average of 90 among the 1,779 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Ronald Koslowski11
  2. Specialty average90

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.

Industry payments in 2024: $257.32

1 payment: education; the largest payer was Dentsply LLC. The 1,408 providers of this specialty with any payment received $3,465.28 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Ronald Koslowski$257.32
  2. Specialty average$3,465.28

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Ronald Ira Koslowski among 474 prosthodontics records in California

Ronald Ira Koslowski, DDS is one of 474 prosthodontics records with a practice address in California. 61% 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 25% of them.

  • NPI issued2007 · 25% of these records are older, 45% newer
  • In a Medicare fileYes · 61% of these records are
  • In the CMS Doctors and Clinicians fileNo · 3% of these records are
  • Record last updated2007 · 80% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Prosthodontics providers in California

There are 474 prosthodontics records in California.

The 8 prosthodontics records with the nearest ZIP codes

  1. Mark Exler, D.D.S.Encino, CA 914361386824118
  2. Guillermo Roman, DDSEncino, CA 914361164544904
  3. Saadat Safa, DMD., MS,Encino, CA 914361477663995
  4. Cibel Smirlian, DDSEncino, CA 914361750664926
  5. Rosemarie Whitaker, DDSEncino, CA 914361912342627
  6. Jinus Emrani, DDSVan Nuys, CA 914051578709283
  7. Jeffrey Tom, DDSSherman Oaks, CA 914031336341049
  8. Armen Hartoonian, DMD, CAGSBurbank, CA 915021578685236

Common questions

What is Ronald Ira Koslowski, DDS's NPI number?

Ronald Ira Koslowski, DDS's National Provider Identifier (NPI) is 1194870501, issued on Jan 24, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Ronald Ira Koslowski, DDS located?

The NPPES record lists a practice address at 16311 Ventura Blvd, Encino, CA, 91436. Phone: (818) 986-9036. Providers update this record themselves, so call before visiting.

How can I verify Ronald Ira Koslowski, DDS's license?

NPPES lists California license number 39291, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Ronald Ira Koslowski, DDS prescribe under Medicare Part D?

In 2024, Ronald Ira Koslowski, DDS had 11 Medicare Part D claims; the average among prosthodontics prescribers was 90. 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.