Aaron G. Lewis, MD
Surgical Oncology Physician · South Pasadena, CA
Aaron G. Lewis, MD is a surgical oncology physician with a practice address in South Pasadena, California, and NPI 1053542100, issued on Aug 6, 2009. Check the license (California A112252, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Aaron G. Lewis
- Credential
- MD
- Primary taxonomy
- Surgical Oncology Physician 2086X0206X
- License number
- A112252 CA
Self-reported in NPPES; status is on the state search - Practice location
- 209 Fair Oaks Ave, South Pasadena, CA 91030
- Phone
- (626) 775-3514
- Enumerated
- Aug 6, 2009
- Record last updated
- Nov 12, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140821001438); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2008
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest surgical oncology physician records → All 250 in California → Look up another NPI →
Also registered at 209 Fair Oaks Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Wei Feng, MDEndocrinology, Diabetes & Metabolism Physician1043277601
- Abigail Fong, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1265886691
Verify Aaron G. Lewis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A112252Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average surgical oncology physician in 2024
211 Medicare Part D claims for 72 beneficiaries, against an average of 87 among the 1,237 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims. 21 claims were for opioids.
Most prescribed
- Creon37 claims
- Metronidazole19 claims
- Neomycin Sulfate14 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): 99.1 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $84.30
2 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 1,132 providers of this specialty with any payment received $4,224.74 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- City OF Hope Medical FoundationSouth Pasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron G. Lewis among 250 surgical oncology physician records in California
Aaron G. Lewis, MD is one of 250 surgical oncology physician records with a practice address in California. 84% 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 58% of them.
- NPI issued2009 · 58% of these records are older, 36% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2008 · median 2004 among the 184 with a school on file
- Record last updated2020 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086X0206X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Oncology Physician providers in California
There are 250 surgical oncology physician records in California.
All 250 in California → Every provider in South Pasadena → Surgical Oncology Physician nationwide →
The 8 surgical oncology physician records with the nearest ZIP codes
- Meng-Fey Lin-Duffy, DOS Pasadena, CA 910301609108836
- Amy Polverini, MDSouth Pasadena, CA 910301073760815
- Fairouz Chibane, MDDuarte, CA 910101255869962
- Sinziana Dumitra, M.D., MSC(EPI), FRCSDuarte, CA 910101770966178
- Preeti Farmah, MDDuarte, CA 910101457814808
- Nicole Hanson, DODuarte, CA 910101134749914
- Ryan Lamm, M.D.Duarte, CA 910101891228482
- Maithao Le, M.D.Duarte, CA 910101760613574
Common questions
What is Aaron G. Lewis, MD's NPI number?
Aaron G. Lewis, MD's National Provider Identifier (NPI) is 1053542100, issued on Aug 6, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Aaron G. Lewis, MD located?
The NPPES record lists a practice address at 209 Fair Oaks Ave, South Pasadena, CA, 91030. Phone: (626) 775-3514. Providers update this record themselves, so call before visiting.
How can I verify Aaron G. Lewis, MD's license?
NPPES lists California license number A112252, 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 Aaron G. Lewis, MD prescribe under Medicare Part D?
In 2024, Aaron G. Lewis, MD had 211 Medicare Part D claims for 72 beneficiaries; the average among surgical oncology physician prescribers was 87. Part D covers Medicare prescriptions only.
What is Aaron G. Lewis, MD's MIPS final score?
The 2023 MIPS final score is 99.1 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.