NPPES file of Aug 9, 2026

Michael Jisoo Lee, MD

Hematology & Oncology Physician · San Jose, CA

Michael Jisoo Lee, MD is a hematology & oncology physician with a practice address in San Jose, California, and NPI 1629631296, issued on Apr 18, 2019. Check the license (California A176458, 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
1629631296
Name
Michael Jisoo Lee
Credential
MD
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
A176458 CA
Self-reported in NPPES; status is on the state search
Practice location
270 International Cir Bldg 3, San Jose, CA 95119
Phone
(909) 719-9924
Enumerated
Apr 18, 2019
Record last updated
Aug 17, 2025
Medicare enrollment
Enrolled (PECOS I20250830000817); accepts Medicare assignment
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 270 International Cir Bldg 3

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

  1. Jesse Klimek, DPTPhysical Therapist1225500648
  2. Rachael LewinPhysical Therapist1225517949
  3. Gene Ma, M.D.Gastroenterology Physician1316238579
  4. Wei YangStudent in an Organized Health Care Education/Training Program1871936930

Verify Michael Jisoo 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 A176458
    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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70% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

267 Medicare Part D claims for 59 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.

  1. Michael Lee267
  2. Specialty average877

Most prescribed

  1. Prednisone22 claims
  2. Anastrozole18 claims
  3. Brukinsa16 claims
  4. Imatinib Mesylate16 claims
  5. Hydroxyurea12 claims
  6. Ibrance12 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.

Bills Medicare through one group practice

  1. Permanente Medical Group IncSan Jose, CA

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

Michael Jisoo Lee among 1,583 hematology & oncology physician records in California

Michael Jisoo Lee, MD is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 95% of them.

  • NPI issued2019 · 95% of these records are older, 3% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2019 · median 2003 among the 1,124 with a school on file
  • Record last updated2025 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in California

There are 1,583 hematology & oncology physician records in California.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Alaa AltahanSan Jose, CA 951191952757684
  2. Jankikeerthika Dharmarpandi, MDSan Jose, CA 951191861055782
  3. Eric Imoto, D.O.San Jose, CA 951191396056438
  4. Maria Pilar Ivanov, MDSan Jose, CA 951191700930468
  5. Myron Kwong, MDSan Jose, CA 951191992881403
  6. Leonid Yavorkovsky, MDSan Jose, CA 951191689750119
  7. Tin Hla, M.D.San Jose, CA 951161326098179
  8. Charlene Lee, MDSan Jose, CA 951161831488337

Common questions

What is Michael Jisoo Lee, MD's NPI number?

Michael Jisoo Lee, MD's National Provider Identifier (NPI) is 1629631296, issued on Apr 18, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Michael Jisoo Lee, MD located?

The NPPES record lists a practice address at 270 International Cir Bldg 3, San Jose, CA, 95119. Phone: (909) 719-9924. Providers update this record themselves, so call before visiting.

How can I verify Michael Jisoo Lee, MD's license?

NPPES lists California license number A176458, 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 Michael Jisoo Lee, MD prescribe under Medicare Part D?

In 2024, Michael Jisoo Lee, MD had 267 Medicare Part D claims for 59 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.