David Stewart Koslov, MD
Urology Physician · San Bernardino, CA
David Stewart Koslov, MD is a urology physician with a practice address in San Bernardino, California, and NPI 1043655525, issued on May 9, 2013. Check the license (California A168921, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Stewart Koslov
- Credential
- MD
- Primary taxonomy
- Urology Physician 208800000X
- License numbers
- A168921 CA
DR.0060248 CO
Self-reported in NPPES; status is on the state search - Practice location
- 489 E 21St St, San Bernardino, CA 92404
- Phone
- (909) 882-2973
- Enumerated
- May 9, 2013
- Record last updated
- Sep 2, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (909) 882-2681
- Medicare enrollment
- Enrolled (PECOS I20200716002200); accepts Medicare assignment
- Medical or professional school
- University Of Toledo College Of Medicine, 2012
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest urology physician records → All 1,524 in California → Look up another NPI →
Also registered at 489 E 21St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Avinash Chenam, M.D.Urology Physician1841502986
- Steve Dong, M.D.Urology Physician1760666499
- Jinfeng Jiang, MDUrology Physician1508434358
- Sun Kim, MDUrology Physician1093738932
- Daniel Lama, MDUrology Physician1972517928
- Daniel Lama, MDUrology Physician1235634676
Verify David Stewart Koslov in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A168921Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% more Medicare Part D claims than the average urology physician in 2024
1,907 Medicare Part D claims for 569 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. 123 claims were for opioids.
Most prescribed
- Tamsulosin Hcl448 claims
- Finasteride279 claims
- Solifenacin Succinate183 claims
- Levofloxacin125 claims
- Hydrocodone-Acetaminophen116 claims
- Cephalexin96 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): 85.8 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).
Industry payments in 2024: $1,135.65
28 payments; by number, the most common kind was food and beverage; the largest payer was Caldera Medical, Inc. The 9,340 providers of this specialty with any payment received $3,800.04 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Franklin M Chu MD IncSan Bernardino, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Stewart Koslov among 1,524 urology physician records in California
David Stewart Koslov, MD is one of 1,524 urology physician records with a practice address in California. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 75% of them.
- NPI issued2013 · 75% of these records are older, 22% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2012 · median 2003 among the 1,049 with a school on file
- Record last updated2020 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208800000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Urology Physician providers in California
There are 1,524 urology physician records in California.
All 1,524 in California → Every provider in San Bernardino → Urology Physician nationwide →
The 8 urology physician records with the nearest ZIP codes
- Avinash Chenam, M.D.San Bernardino, CA 924041841502986
- Franklin Chu, MDSan Bernardino, CA 924041700809753
- Steve Dong, M.D.San Bernardino, CA 924041760666499
- Jinfeng Jiang, MDSan Bernardino, CA 924041508434358
- Sun Kim, MDSan Bernardino, CA 924041093738932
- Daniel Lama, MDSan Bernardino, CA 924041972517928
- Daniel Lama, MDSan Bernardino, CA 924041235634676
- Vincent WongSan Bernardino, CA 924041316302441
Common questions
What is David Stewart Koslov, MD's NPI number?
David Stewart Koslov, MD's National Provider Identifier (NPI) is 1043655525, issued on May 9, 2013. An NPI identifies a provider in billing; it is not a license.
Where is David Stewart Koslov, MD located?
The NPPES record lists a practice address at 489 E 21St St, San Bernardino, CA, 92404. Phone: (909) 882-2973. Providers update this record themselves, so call before visiting.
How can I verify David Stewart Koslov, MD's license?
NPPES lists California license number A168921, 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 David Stewart Koslov, MD prescribe under Medicare Part D?
In 2024, David Stewart Koslov, MD had 1,907 Medicare Part D claims for 569 beneficiaries; the average among urology physician prescribers was 1,340. Part D covers Medicare prescriptions only.
What is David Stewart Koslov, MD's MIPS final score?
The 2023 MIPS final score is 85.8 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.