Walter J. Kim, M.D.
Internal Medicine Physician · Los Angeles, CA
Walter J. Kim, M.D. is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1497806566, issued on Jan 16, 2007. Check the license (California G64109, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Walter J. Kim
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G64109 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4160 Wilshire Blvd, Los Angeles, CA 90010
- Phone
- (323) 965-9650
- Enumerated
- Jan 16, 2007
- Record last updated
- Jan 19, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (323) 965-9690
- Medicare enrollment
- Enrolled (PECOS I20040504001637); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4160 Wilshire Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yoosoon Kim, LACAcupuncturist1548390073
- Paul Lee, MDOphthalmology Physician1619171428
- Beatrice Merza, P.T.Physical Therapist1437209590
- Myunghee Woo, LAC PHDAcupuncturist1235269754
Verify Walter J. Kim in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G64109Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
263 Medicare Part D claims for 22 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Metformin Hcl29 claims
- Atorvastatin Calcium20 claims
- Celecoxib19 claims
- Vascepa18 claims
- Amlodipine Besylate15 claims
- Pioglitazone Hcl14 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.
Walter J. Kim among 17,696 internal medicine physician records in California
Walter J. 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1987 · median 2004 among the 11,065 with a school on file
- Record last updated2016 · 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).
1,423 internal medicine physician records list a practice address in Los Angeles
They are 1,423 of the 69,537 NPPES records with a practice address in Los Angeles, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Los Angeles → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Doran Kim, M.D.Los Angeles, CA 900101780775312
- Cesar Palana, MDLos Angeles, CA 900101467712604
- Siavash AraniLos Angeles, CA 900111629680905
- Ismael Gestopa, NPLos Angeles, CA 900111871266890
- Maziar Ghalili, D.O.Los Angeles, CA 900111053672006
- Grace Neuman, D.O.Los Angeles, CA 900111407115959
- Francis Obi, D.O.Los Angeles, CA 900111841659174
- Paul Guidry, M.D.Los Angeles, CA 900081255665824
Common questions
What is Walter J. Kim, M.D.'s NPI number?
Walter J. Kim, M.D.'s National Provider Identifier (NPI) is 1497806566, issued on Jan 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Walter J. Kim, M.D. located?
The NPPES record lists a practice address at 4160 Wilshire Blvd, Los Angeles, CA, 90010. Phone: (323) 965-9650. Providers update this record themselves, so call before visiting.
How can I verify Walter J. Kim, M.D.'s license?
NPPES lists California license number G64109, 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 Walter J. Kim, M.D. prescribe under Medicare Part D?
In 2024, Walter J. Kim, M.D. had 263 Medicare Part D claims for 22 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.