NPPES file of Aug 9, 2026

Sonwoo Lee, MD

Rheumatology Physician · Los Angeles, CA

Sonwoo Lee, MD is a rheumatology physician with a practice address in Los Angeles, California, and NPI 1336168616, issued on Jul 18, 2006. Check the license (California A78556, 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
1336168616
Name
Sonwoo Lee
Credential
MD
Primary taxonomy
Rheumatology Physician 207RR0500X
License number
A78556 CA
Self-reported in NPPES; status is on the state search
Practice location
505 S Virgil Ave, Los Angeles, CA 90020
Phone
(213) 739-0007
Enumerated
Jul 18, 2006
Record last updated
May 20, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(213) 739-0011
Medicare enrollment
Enrolled (PECOS I20050907000828); may accept 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 505 S Virgil Ave

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

  1. Duncan Chang, P.T.Physical Therapist1972601185
  2. Charles Cho, M.D.Nephrology Physician1053512566
  3. Jameline Jewell, PTAPhysical Therapy Assistant1013867357
  4. Hee Chul KimAcupuncturist1629300405
  5. Hyo-Rang Lee, M.D.,PH.DGastroenterology Physician1134205099
  6. Yoonjung Lee, DDSPeriodontics1972050847

Verify Sonwoo Lee in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A78556
    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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17.7 times the Medicare Part D claims of the average rheumatology physician in 2024

34,968 Medicare Part D claims for 1,353 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 286 claims were for opioids.

  1. Sonwoo Lee34,968
  2. Specialty average1,978

Most prescribed

  1. Atorvastatin Calcium3,522 claims
  2. Losartan Potassium1,509 claims
  3. Omeprazole1,486 claims
  4. Amlodipine Besylate1,422 claims
  5. Vascepa1,263 claims
  6. Metformin Hcl1,110 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 MIPS final score for 2023 (Medicare payment program): 22.7 of 100

The Merit-based Incentive Payment System score is reported for this clinician. 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 score0.0
  2. Costout of 100 · 30%75.5
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

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

Industry payments in 2024: $134.68

5 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Sonwoo Lee$134.68
  2. Specialty average$8,538.33

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

  1. Westwood Medical Group,inc.Los Angeles, CA

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

Sonwoo Lee among 926 rheumatology physician records in California

Sonwoo Lee, MD is one of 926 rheumatology 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 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 55% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated1996 · median 2003 among the 641 with a school on file
  • Record last updated2014 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Rheumatology Physician providers in California

There are 926 rheumatology physician records in California.

The 8 rheumatology physician records with the nearest ZIP codes

  1. Brian Huh, M.D.Los Angeles, CA 900201275614455
  2. Seon WhangLos Angeles, CA 900201043305394
  3. Stephen Bland, MDLos Angeles, CA 900171821002627
  4. Brendan Cerk, MDLos Angeles, CA 900171558716357
  5. Joanna Davies, M.D.Los Angeles, CA 900171699746958
  6. Wagdy Kades, M.D.Los Angeles, CA 900171326080060
  7. Chen Xie, M.D.Los Angeles, CA 900171528452448
  8. Karen Au, MDLos Angeles, CA 900241144478306

Common questions

What is Sonwoo Lee, MD's NPI number?

Sonwoo Lee, MD's National Provider Identifier (NPI) is 1336168616, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Sonwoo Lee, MD located?

The NPPES record lists a practice address at 505 S Virgil Ave, Los Angeles, CA, 90020. Phone: (213) 739-0007. Providers update this record themselves, so call before visiting.

How can I verify Sonwoo Lee, MD's license?

NPPES lists California license number A78556, 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 Sonwoo Lee, MD prescribe under Medicare Part D?

In 2024, Sonwoo Lee, MD had 34,968 Medicare Part D claims for 1,353 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.

What is Sonwoo Lee, MD's MIPS final score?

The 2023 MIPS final score is 22.7 of 100. 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.