Dr. Aaron D. Lewis, MD
- Medicare services, 2024
- 124
- Medicare patients, 2024
- 229
- Industry payments
- $121
- State licenses
- 2
- Year NPI issued
- 2007
- Practice address
- 1500 Duarte Rd, Duarte, CA 91010
- Practice phone
- Call (800) 826-4673
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
City of Hope Comprehensive Cancer Center - Duarte
Duarte, California
Find Dr. Lewis' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Aaron D. Lewis is an anesthesiologist in Duarte, California
Dr. Lewis practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California.
Dr. Lewis' NPI, 1750598959, was assigned on May 17, 2007. Dr. Lewis holds North Dakota license 11421.
- NPI
- 1750598959NPI Registry (opens in a new tab)
- NPI enumeration date
- May 17, 2007
- NPI status
- Active
- Practice phone
- (800) 826-4673
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Aaron D. Lewis practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California
Dr. Lewis' primary practice is City of Hope Comprehensive Cancer Center - Duarte, at 1500 Duarte Rd, Duarte, CA 91010 in Los Angeles County. The practice phone is (800) 826-4673.
- City of Hope Comprehensive Cancer Center - Duarte1500 Duarte Rd, Duarte, CA 91010 · Los Angeles CountyPhone(800) 826-4673
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Aaron D. Lewis is affiliated with 1 site of care
Dr. Lewis' primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Aaron D. Lewis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lewis practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| City of Hope Comprehensive Cancer Center - Duarte | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Aaron D. Lewis is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Lewis' primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dmand AI has Dr. Lewis' licenses on file in 2 states: North Dakota and Michigan.
Specialties and state licenses
- Anesthesiology, North DakotaPrimary
- Michigan license
Anesthesiologists near Dr. Lewis
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Aaron D. Lewis billed Medicare for 124 services in 2024
CMS data shows 124 Medicare services from Dr. Lewis across 6 procedure codes in 2024, for 229 Medicare patients. Medicare paid $8,026 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lewis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 2802024: 10961%
- Surgery
- 2023: 382024: 1561%
Dr. Lewis compared with the California median for anesthesiologists, 2024
- Dr. Lewis
- California median
- Medicare services
- 124vs 7272% above
- Medicare patients
- 229vs 14360% above
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Lewis' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lewis and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Aaron D. Lewis treated 229 Medicare patients in 2024, average age 71
CMS counts 229 Medicare patients who saw Dr. Lewis in 2024. The largest group is 65 to 74, with 112 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 2.20, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Lewis' median patient age at 73, with 40% women.
Dr. Lewis' Medicare patients by age, 2024
Dr. Lewis' Medicare patients by sex, 2024
- Women12655%
- Men10345%
Chronic conditions among Dr. Lewis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Diabetes41%
- Anxiety38%
- Ischemic heart disease38%
- Chronic kidney disease35%
- Mood disorders34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lewis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women40%
- Men60%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
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Dr. Aaron D. Lewis received $121 in industry payments from 2018 to 2025
CMS Open Payments shows 5 general payments to Dr. Lewis from 4 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Johnson & Johnson Vision Care, Inc. paid the most, $59.
General payments to Dr. Lewis by program year, 2018 to 2025
Companies that paid Dr. Lewis the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Aaron D. Lewis's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Aaron D. Lewis
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Aaron D. Lewis' NPI number?
Dr. Aaron D. Lewis' NPI number is 1750598959. It was assigned on May 17, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Aaron D. Lewis?
Dr. Aaron D. Lewis is an anesthesiologist in Duarte, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Aaron D. Lewis practice?
Dr. Lewis practices at 1500 Duarte Rd, Duarte, CA 91010. Dr. Lewis' primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California.
What is Dr. Aaron D. Lewis' office phone number?
The practice phone on file for Dr. Lewis is (800) 826-4673.
What is Dr. Aaron D. Lewis' medical license number?
Dr. Lewis holds North Dakota license 11421, one of the licenses on file in 2 states.
Which states has Dr. Aaron D. Lewis been licensed in?
Dmand AI has state licenses on file for Dr. Lewis in North Dakota and Michigan.
Does Dr. Aaron D. Lewis accept Medicare?
Yes. CMS data shows Dr. Lewis billed Medicare for 124 services in 2024.
How many Medicare patients does Dr. Aaron D. Lewis see?
CMS counts 229 Medicare patients who saw Dr. Lewis in 2024, with an average age of 71.
What services does Dr. Aaron D. Lewis bill to Medicare?
In 2024, Dr. Lewis' most billed Medicare services were anesthesia (00731), anesthesia (00811) and anesthesia (00813).
Has Dr. Aaron D. Lewis received payments from drug or device companies?
CMS Open Payments shows $121 in general payments to Dr. Lewis from 4 companies from 2018 to 2025. The largest total came from Johnson & Johnson Vision Care, Inc.
How long has Dr. Aaron D. Lewis been practicing?
Dr. Lewis graduated from medical school in 2005, 21 years ago.
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