NPPES file of Aug 9, 2026

Choon Soo Rim, MD

Neurology Physician · San Diego, CA

Choon Soo Rim, MD is a neurology physician with a practice address in San Diego, California, and NPI 1083827273, issued on May 7, 2007. Check the license (California C50815, 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
1083827273
Name
Choon Soo Rim
Credential
MD
Primary taxonomy
Neurology Physician 2084N0400X
License numbers
C50815 CA
4301032089 MI
Self-reported in NPPES; status is on the state search
Practice location
7920 Frost St, San Diego, CA 92123
Phone
(858) 248-6955
Enumerated
May 7, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicaid ID
1061299 MI
Medicare enrollment
Enrolled (PECOS I20131108000891); 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 7920 Frost St

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

  1. Madhu Alagiri, M.D.Pediatric Urology Physician1619083961
  2. Ann Marie Berger-Finley, N.P.Nurse Practitioner1134256639
  3. Lynne Bird, M.D.Clinical Genetics (M.D.) Physician1487725230
  4. Sophia Ceulemans, M.SGenetic Counselor (M.S.)1255728713
  5. George Chiang, M.D.Pediatric Urology Physician1093773954
  6. Peter Chiraseveenuprapund, M.D., M.S.Pediatric Rheumatology Physician1467518209

Verify Choon Soo Rim in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C50815
    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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77% fewer Medicare Part D claims than the average neurology physician in 2024

314 Medicare Part D claims for 71 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.

  1. Choon Rim314
  2. Specialty average1,370

Most prescribed

  1. Amlodipine Besylate28 claims
  2. Tamsulosin Hcl23 claims
  3. Simvastatin20 claims
  4. Rosuvastatin Calcium17 claims
  5. Atorvastatin Calcium15 claims
  6. Metformin Hcl11 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. Woori Medical Group, Professional CorpSan Diego, CA

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

Choon Soo Rim among 2,339 neurology physician records in California

Choon Soo Rim, MD is one of 2,339 neurology physician records with a practice address in California. 81% 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 41% of them.

  • NPI issued2007 · 41% of these records are older, 48% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated1963 · median 2006 among the 1,628 with a school on file
  • Record last updated2007 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurology Physician providers in California

There are 2,339 neurology physician records in California.

The 8 neurology physician records with the nearest ZIP codes

  1. Kelly Askim, D.O.San Diego, CA 921231689803223
  2. Jonathan Bui, MD PHDSan Diego, CA 921231730247974
  3. Jennifer Friedman, M.D.San Diego, CA 921231821144478
  4. Jennifer Graves, MDSan Diego, CA 921231992849863
  5. Alexander Maslov, MDSan Diego, CA 921231013533694
  6. David Stein, M.D.San Diego, CA 921231619973476
  7. Isaac Bakst, MBBCHSan Diego, CA 921221215027537
  8. Kristy HwangSan Diego, CA 921211013449537

Common questions

What is Choon Soo Rim, MD's NPI number?

Choon Soo Rim, MD's National Provider Identifier (NPI) is 1083827273, issued on May 7, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Choon Soo Rim, MD located?

The NPPES record lists a practice address at 7920 Frost St, San Diego, CA, 92123. Phone: (858) 248-6955. Providers update this record themselves, so call before visiting.

How can I verify Choon Soo Rim, MD's license?

NPPES lists California license number C50815, 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 Choon Soo Rim, MD prescribe under Medicare Part D?

In 2024, Choon Soo Rim, MD had 314 Medicare Part D claims for 71 beneficiaries; the average among neurology physician prescribers was 1,370. 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.