Mark Sung-Kyoung Kim, M.D.
Internal Medicine Physician · Hawthorne, CA
Mark Sung-Kyoung Kim, M.D. is an internal medicine physician with a practice address in Hawthorne, California, and NPI 1073743621, issued on Jul 16, 2009. Check the license (California A120844, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Sung-Kyoung Kim
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A120844 CA
AU29035993617 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 11539 Hawthorne Blvd, Hawthorne, CA 90250
- Phone
- (310) 675-5370
- Enumerated
- Jul 16, 2009
- Record last updated
- Oct 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130102000174); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2009
- 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 11539 Hawthorne Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Pearl Ainabe, NP-CFamily Nurse Practitioner1295208270
- Aspaltha BledmanCounselor1104999689
- Lauren Brassel, MSN, FNP-BCFamily Nurse Practitioner1578094330
- Aaron Clothier, P.A.Physician Assistant1760767149
- Danny Dan, M.D.Obstetrics & Gynecology Physician1588808943
- Lawrence DiaiDay Training/Habilitation Specialist1326125758
Verify Mark Sung-Kyoung Kim in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A120844Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
51 Medicare Part D claims for 29 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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
- Southern California Permanente Medical GroupBellflower, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Sung-Kyoung Kim among 17,696 internal medicine physician records in California
Mark Sung-Kyoung Kim, M.D. 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 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2009 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 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).
18 internal medicine physician records list a practice address in Hawthorne
They are 18 of the 818 NPPES records with a practice address in Hawthorne, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Hawthorne → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Alfonso Brigham, M.D.Hawthorne, CA 902501902858343
- Jennifer Chiu, M.D.Hawthorne, CA 902501962528430
- Malay Das, MDHawthorne, CA 902501164526224
- Mehmet Demirozu, M.D.Hawthorne, CA 902501295753234
- Valentin Hernandez, M.D.Hawthorne, CA 902501871520320
- Augustine Iluore, MDHawthorne, CA 902501336205442
- Raymond Jing, MDHawthorne, CA 902501518968536
- Kenneth Landis, M.D.Hawthorne, CA 902501861463077
Common questions
What is Mark Sung-Kyoung Kim, M.D.'s NPI number?
Mark Sung-Kyoung Kim, M.D.'s National Provider Identifier (NPI) is 1073743621, issued on Jul 16, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mark Sung-Kyoung Kim, M.D. located?
The NPPES record lists a practice address at 11539 Hawthorne Blvd, Hawthorne, CA, 90250. Phone: (310) 675-5370. Providers update this record themselves, so call before visiting.
How can I verify Mark Sung-Kyoung Kim, M.D.'s license?
NPPES lists California license number A120844, 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 Mark Sung-Kyoung Kim, M.D. prescribe under Medicare Part D?
In 2024, Mark Sung-Kyoung Kim, M.D. had 51 Medicare Part D claims for 29 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.