NPPES file of Aug 9, 2026

Isaac Kwangnyon Kim, MD

Family Medicine Physician · South Gate, CA

Isaac Kwangnyon Kim, MD is a family medicine physician with a practice address in South Gate, California, and NPI 1134223134, issued on Sep 11, 2006. Check the license (California A87972, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1134223134
Name
Isaac Kwangnyon Kim
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A87972 CA
Self-reported in NPPES; status is on the state search
Practice location
4476 Tweedy Blvd, South Gate, CA 90280
Phone
(323) 825-8300
Enumerated
Sep 11, 2006
Record last updated
Aug 23, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(866) 372-2719
Medicaid ID
00A879720 CA
Medicare enrollment
Enrolled (PECOS I20040913000687); accepts Medicare assignment
Medical or professional school
Texas Tech University Health Science Center School Of Medicine, 1997
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 4476 Tweedy Blvd

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

  1. Eumi Choi, DDSDentist1891389318
  2. Jorge Echeverri, M.D.Family Medicine Physician1376556506
  3. Richard Jordan, M.D.Internal Medicine Physician1639212558
  4. Nancy Langarica PereraDental Assistant1598522997
  5. Stanley Lowe, D.P.M.Podiatrist1083627285
  6. Esmeralda Orozco, LVNLicensed Vocational Nurse1992640155

Verify Isaac Kwangnyon Kim in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A87972
    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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67% fewer Medicare Part D claims than the average family medicine physician in 2024

1,181 Medicare Part D claims for 264 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 20 claims were for opioids.

  1. Isaac Kim1,181
  2. Specialty average3,544

Most prescribed

  1. Amlodipine Besylate71 claims
  2. Atorvastatin Calcium63 claims
  3. Losartan Potassium46 claims
  4. Metformin Hcl38 claims
  5. Naproxen37 claims
  6. Omeprazole35 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 76.3 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score62.7
  2. Costout of 100 · 30%59.3
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $24.70

1 payment: food and beverage; the largest payer was Alkermes, Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Isaac Kim$24.70
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. H Street ClinicInglewood, CA
  2. Pih Health PhysiciansWhittier, CA

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

31 family medicine physician records list a practice address in South Gate

They are 31 of the 466 NPPES records with a practice address in South Gate, and 17,133 family medicine physician records in California.

Other family medicine physician records in California

  1. Omer Aba-Omer, MDSanta Monica, CA1649702093
  2. Michelle Ababa, MDWilmington, CA1710922513
  3. Anna Tzeitel Abalos, MDRoseville, CA1720200017
  4. Adan Abarca, MDAnaheim, CA1760553689
  5. Vanessa Abarca, DOVentura, CA1952040859
  6. Lorraine Abate, M.D.Sacramento, CA1104840008
  7. Robert Abatecola, MDCastro Valley, CA1669551719
  8. Romeo Abaya, M.D.Cottonwood, CA1598053506
  9. Effiem Abbah, MD, MPHSan Francisco, CA1821185133
  10. Khuzeman Abbasi, MDSanta Rosa, CA1841979952

Common questions

What is Isaac Kwangnyon Kim, MD's NPI number?

Isaac Kwangnyon Kim, MD's National Provider Identifier (NPI) is 1134223134, issued on Sep 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Isaac Kwangnyon Kim, MD located?

The NPPES record lists a practice address at 4476 Tweedy Blvd, South Gate, CA, 90280. Phone: (323) 825-8300. Providers update this record themselves, so call before visiting.

How can I verify Isaac Kwangnyon Kim, MD's license?

NPPES lists California license number A87972, 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 Isaac Kwangnyon Kim, MD prescribe under Medicare Part D?

In 2024, Isaac Kwangnyon Kim, MD had 1,181 Medicare Part D claims for 264 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

What is Isaac Kwangnyon Kim, MD's MIPS final score?

The 2023 MIPS final score is 76.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.