NPPES file of Aug 9, 2026

Ivan S. Lee, MD

Urology Physician · Riverside, CA

Ivan S. Lee, MD is a urology physician with a practice address in Riverside, California, and NPI 1538231865, issued on Nov 14, 2006. Check the license (California A49449, as entered in NPPES) on the Medical Board of California; 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
1538231865
Name
Ivan S. Lee
Credential
MD
Primary taxonomy
Urology Physician 208800000X
License number
A49449 CA
Self-reported in NPPES; status is on the state search
Practice location
10800 Magnolia Ave, Riverside, CA 92505
Phone
(909) 353-2000
Enumerated
Nov 14, 2006
Record last updated
Nov 29, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20240610001013); accepts Medicare assignment
Medical or professional school
University Of Texas Medical School At San Antonio, 1989
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 10800 Magnolia Ave

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

  1. Joseph Abapo, MDPediatrics Physician1841348786
  2. Hussein Abdulrassoul, MDOrthopaedic Surgery Physician1972123891
  3. Kimberly Adams, PA-CMedical Physician Assistant1053522870
  4. Alfredo Aguiar, PAPhysician Assistant1043368970
  5. Michael Aguinaldo, M.D.Pediatrics Physician1851531487
  6. Maria Aguirre, MDPediatrics Physician1295806255

Verify Ivan S. Lee in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A49449
    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
Open 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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53% fewer Medicare Part D claims than the average urology physician in 2024

633 Medicare Part D claims for 208 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D.

  1. Ivan Lee633
  2. Specialty average1,340

Most prescribed

  1. Terazosin Hcl174 claims
  2. Finasteride113 claims
  3. Tamsulosin Hcl113 claims
  4. Ciprofloxacin Hcl34 claims
  5. Potassium Citrate Er23 claims
  6. Myrbetriq15 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.

Industry payments in 2024: $19.63

1 payment: food and beverage; the largest payer was Emd Serono, 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.

  1. Ivan Lee$19.63
  2. Specialty average$3,800.04

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

  1. Arizona Digestive Health PCGlendale, AZ

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ivan S. Lee among 1,524 urology physician records in California

Ivan S. Lee, 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 2006, is newer than 8% of them.

  • NPI issued2006 · 8% of these records are older, 51% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated1989 · median 2003 among the 1,049 with a school on file
  • Record last updated2021 · 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.

The 8 urology physician records with the nearest ZIP codes

  1. Aravind Chandrashekar, M.D.Riverside, CA 925051215267307
  2. Samuel Donnenfeld, MDRiverside, CA 925051760045504
  3. Eric Forneret, MDRiverside, CA 925051205903036
  4. Paul Gweon, MDRiverside, CA 925051528127198
  5. Daniel Kronenberg, MDRiverside, CA 925051720576705
  6. Brandon Louie, M.D.Riverside, CA 925051104152149
  7. Lincoln Maynes, MDRiverside, CA 925051124055025
  8. Raul Ordorica, MDRiverside, CA 925051235159773

Common questions

What is Ivan S. Lee, MD's NPI number?

Ivan S. Lee, MD's National Provider Identifier (NPI) is 1538231865, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ivan S. Lee, MD located?

The NPPES record lists a practice address at 10800 Magnolia Ave, Riverside, CA, 92505. Phone: (909) 353-2000. Providers update this record themselves, so call before visiting.

How can I verify Ivan S. Lee, MD's license?

NPPES lists California license number A49449, 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 Ivan S. Lee, MD prescribe under Medicare Part D?

In 2024, Ivan S. Lee, MD had 633 Medicare Part D claims for 208 beneficiaries; the average among urology physician prescribers was 1,340. 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.