Michael Youngjun Choi, M.D.
Hematology & Oncology Physician · San Diego, CA
Michael Youngjun Choi, M.D. is a hematology & oncology physician with a practice address in San Diego, California, and NPI 1912181173, issued on Dec 24, 2007. Check the license (California A100104, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael Youngjun Choi
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- A100104 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 W Arbor Dr, San Diego, CA 92103
- Phone
- (858) 822-6100
- Enumerated
- Dec 24, 2007
- Record last updated
- Nov 12, 2025
- Fax
- (858) 534-5620
- Medicare enrollment
- Enrolled (PECOS I20081122000000); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 200 W Arbor Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alison A'Court, MDAnesthesiology Physician1912218199
- Benjamin Abbadessa, M.D.Colon & Rectal Surgery Physician1255593612
- Geraldine Abcede, RNCertified Registered Nurse Anesthetist1982384046
- Joseph Abdelmalek, M.DNephrology Physician1740485531
- Kristy AbelCertified Registered Nurse Anesthetist1962113035
- Paula Abeleda, NPFamily Nurse Practitioner1558945022
Verify Michael Youngjun Choi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A100104Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,163 Medicare Part D claims for 166 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 66% of claims.
Most prescribed
- Calquence175 claims
- Brukinsa171 claims
- Imbruvica147 claims
- Venclexta116 claims
- Acyclovir66 claims
- Hydroxyurea54 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: $415.83
6 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,560 providers of this specialty with any payment received $7,481.41 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
- Regents OF The University OF CaliforniaSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Youngjun Choi among 1,583 hematology & oncology physician records in California
Michael Youngjun Choi, M.D. 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 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 40% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2005 · 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.
All 1,583 in California → Every provider in San Diego → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Lyudmila Bazhenova, M.D.San Diego, CA 921031093791006
- Lynn Bemiller, M.D.San Diego, CA 921031184632523
- Ezra Cohen, MDSan Diego, CA 921031518029065
- Gregory Daniels, M.D., PH.D.San Diego, CA 921031164480943
- Andrew Hampshire, M.D.San Diego, CA 921031073559068
- Peter Holman, MDSan Diego, CA 921031821049230
- Stephen Howell, M.D.San Diego, CA 921031114942802
- Catriona Jamieson, M.D./PH.DSan Diego, CA 921031841223617
Common questions
What is Michael Youngjun Choi, M.D.'s NPI number?
Michael Youngjun Choi, M.D.'s National Provider Identifier (NPI) is 1912181173, issued on Dec 24, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael Youngjun Choi, M.D. located?
The NPPES record lists a practice address at 200 W Arbor Dr, San Diego, CA, 92103. Phone: (858) 822-6100. Providers update this record themselves, so call before visiting.
How can I verify Michael Youngjun Choi, M.D.'s license?
NPPES lists California license number A100104, 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 Youngjun Choi, M.D. prescribe under Medicare Part D?
In 2024, Michael Youngjun Choi, M.D. had 1,163 Medicare Part D claims for 166 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.