Robert Kozlowski, MD
Internal Medicine Physician · Valencia, CA
Robert Kozlowski, MD is an internal medicine physician with a practice address in Valencia, California, and NPI 1013178102, issued on Jun 20, 2008. Check the license (California A126369, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert Kozlowski
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A126369 CA
Self-reported in NPPES; status is on the state search - Practice location
- 25751 Mcbean Pkwy Ste 210, Valencia, CA 91355
- Phone
- (661) 284-3100
- Enumerated
- Jun 20, 2008
- Record last updated
- Dec 16, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (661) 290-3310
- Medicare enrollment
- Enrolled (PECOS I20140410001829); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 25751 Mcbean Pkwy Ste 210
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert Kozlowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A126369Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% more Medicare Part D claims than the average internal medicine physician in 2024
5,451 Medicare Part D claims for 595 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 104 claims were for opioids.
Most prescribed
- Atorvastatin Calcium378 claims
- Amlodipine Besylate294 claims
- Losartan Potassium153 claims
- Tamsulosin Hcl148 claims
- Levothyroxine Sodium122 claims
- Albuterol Sulfate Hfa121 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 83.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Regents OF The University OF CaliforniaGlendale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Kozlowski among 17,696 internal medicine physician records in California
Robert Kozlowski, MD 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 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2006 · median 2004 among the 11,065 with a school on file
- Record last updated2019 · 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).
38 internal medicine physician records list a practice address in Valencia
They are 38 of the 2,083 NPPES records with a practice address in Valencia, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Valencia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Christopher Avelino, MDValencia, CA 913551649298738
- David Campa, M.D.Valencia, CA 913551639170228
- Arousha Davatgarzadeh, M.D.Valencia, CA 913551033213111
- Lakhbinder Dhanda, M.D.Valencia, CA 913551104867555
- Eugene Dorio, M.D.Valencia, CA 913551912956434
- Eric Fernandez, M.D.Valencia, CA 913551326052887
- Bhuvaneswari Gowthaman, M.D.Valencia, CA 913551467435107
- Clement Kim, M.D.Valencia, CA 913551558474262
Common questions
What is Robert Kozlowski, MD's NPI number?
Robert Kozlowski, MD's National Provider Identifier (NPI) is 1013178102, issued on Jun 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Robert Kozlowski, MD located?
The NPPES record lists a practice address at 25751 Mcbean Pkwy Ste 210, Valencia, CA, 91355. Phone: (661) 284-3100. Providers update this record themselves, so call before visiting.
How can I verify Robert Kozlowski, MD's license?
NPPES lists California license number A126369, 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 Robert Kozlowski, MD prescribe under Medicare Part D?
In 2024, Robert Kozlowski, MD had 5,451 Medicare Part D claims for 595 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Robert Kozlowski, MD's MIPS final score?
The 2023 MIPS final score is 83.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.