beta-GlucansCoccidioidesCoccidioidomycosis
Dr. Ethan Robert Stewart, DO
NPI1083989586PAC ID9436301751
- Part D claims, 2024
- 269
- Publications
- 7
- Hospital affiliations
- 1
- Industry payments
- $319
- Medical group
- 1
- Practice address
- 9455 Clairemont Mesa Blvd, San Diego, CA 92123
- Practice phone
- Call (619) 528-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente San Diego Medical Center
San Diego, California
Find Dr. Stewart's 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. Ethan Robert Stewart is an infectious disease specialist in San Diego, California
Dr. Stewart practices at Kaiser Permanente San Diego Medical Center in San Diego, California.
Dr. Stewart's NPI, 1083989586, was assigned on March 16, 2012. Dr. Stewart graduated from Arizona College of Osteopathic Medicine - Glendale in 2010. Dr. Stewart's California license number on file is 20A11993.
NPI and contact details
- NPI
- 1083989586NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9436301751
- NPI enumeration date
- March 16, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (619) 528-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ethan Robert Stewart practices at Kaiser Permanente San Diego Medical Center in San Diego, California
Dr. Stewart's primary practice is Kaiser Permanente San Diego Medical Center, at 9455 Clairemont Mesa Blvd, San Diego, CA 92123 in San Diego County. The practice phone is (619) 528-5000.
- Kaiser Permanente San Diego Medical Center9455 Clairemont Mesa Blvd, San Diego, CA 92123 · San Diego CountyPhone(619) 528-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ethan Robert Stewart is affiliated with 2 sites of care and 1 medical group
Dr. Stewart's primary practice is Kaiser Permanente San Diego Medical Center in San Diego, California. Dr. Stewart is also affiliated with Kaiser Permanente Zion Medical Center. The medical group on file is Southern California Permanente Medical Group.
Kaiser Permanente San Diego Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ethan Robert Stewart's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Stewart practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente San Diego Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ethan Robert Stewart is one of 1,054 infectious disease specialists in California
Infectious disease is Dr. Stewart's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Stewart is board certified in infectious disease by the American Board of Internal Medicine. Dmand AI has Dr. Stewart's licenses on file in 2 states: California and Virginia.
Specialties and state licenses
- Infectious disease, CaliforniaPrimary
- Virginia license
Clinical focus
Dmand AI lists hiv/aids among the conditions Dr. Stewart treats.
Infectious disease specialists near Dr. Stewart
Counts of infectious disease specialists 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. Ethan Robert Stewart's patients have a median age of 53
Across all payers, Dmand AI patient panel data puts Dr. Stewart's median patient age at 53, with 27% women.
Dr. Stewart's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women27%
- Men73%
Source: Dmand AI Patient Panel Data
Dr. Ethan Robert Stewart wrote 269 Medicare Part D claims in 2024
In 2024, Dr. Stewart wrote 269 Medicare Part D claims for 112 patients. 76% of them were for generic drugs. CMS names the drug for 140 of them, across 7 drugs with 11 or more claims each, at $166,135 in total drug cost. In 2023, CMS named 177 claims across 9 drugs.
Part D claims, 2024269
Drugs named by CMS7
Total drug cost$166,135
Part D patients112
Dr. Stewart's Part D claims by kind of drug, 2024
- Generic204 claims76%
- Brand-name65 claims24%
Dr. Stewart's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Stewart's Part D claims, 2024
- Antibiotics48%129 of 269 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1772024: 14021%
Drugs named by CMS: 7 in 2024, 9 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Ethan Robert Stewart takes part in Medicare
Dr. Stewart accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ethan Robert Stewart has 7 publications on record
Dmand AI links 7 papers to Dr. Stewart, published from 2015 to 2022. 2016 was the busiest year, with 2. The most frequent topics are Antifungal Agents, Coccidioidomycosis and Coccidioides. Dr. Stewart has published most often in J Fungi (Basel). Dr. Stewart's most frequent co-authors are Sarah E. Waldman, MD, Stuart H. Cohen, MD and Fariba M. Donovan, MD.
Papers7
Years published2015 to 2022
Dr. Stewart's papers by year, 2015 to 2022
Topics Dr. Stewart writes about most
- Antifungal Agents
- Coccidioidomycosis
- Coccidioides
Dr. Stewart's most frequent co-authors
- Sarah E. Waldman, MD2 shared papers
- Stuart H. Cohen, MD1 shared paper
- Fariba M. Donovan, MD1 shared paper
Recent publications by Dr. Stewart
J Clin Microbiol
Antifungal AgentsCoccidioidesCoccidioidomycosis
Mycopathologia
Amphotericin BAntifungal AgentsCoccidioidomycosis
See who Dr. Stewart researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Stewart works with, so you can find a warm path to the right infectious disease specialists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ethan Robert Stewart received $319 in industry payments in 2016
CMS Open Payments shows 3 general payments to Dr. Stewart from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $319.
Companies that paid Dr. Stewart the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ethan Robert Stewart graduated from Arizona College of Osteopathic Medicine - Glendale
Dr. Stewart graduated from Arizona College of Osteopathic Medicine - Glendale in 2010.
- Medical school
- Board certified in infectious disease
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Ethan Robert Stewart accepts plans from 2 insurance carriers
Dr. Stewart is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Stewart accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ethan Robert Stewart'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 DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| 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. Ethan Robert Stewart
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. Ethan Robert Stewart's NPI number?
Dr. Ethan Robert Stewart's NPI number is 1083989586. It was assigned on March 16, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Ethan Robert Stewart?
Dr. Ethan Robert Stewart is an infectious disease specialist in San Diego, California. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Ethan Robert Stewart practice?
Dr. Stewart practices at 9455 Clairemont Mesa Blvd, San Diego, CA 92123. Dr. Stewart's primary practice is Kaiser Permanente San Diego Medical Center in San Diego, California.
What is Dr. Ethan Robert Stewart's office phone number?
The practice phone on file for Dr. Stewart is (619) 528-5000.
What is Dr. Ethan Robert Stewart's medical license number?
Dr. Stewart's California license number on file is 20A11993, one of the licenses on file in 2 states.
Which states has Dr. Ethan Robert Stewart been licensed in?
Dmand AI has state licenses on file for Dr. Stewart in California (2011 to 2025) and Virginia (2020 to 2022).
Which hospitals is Dr. Ethan Robert Stewart affiliated with?
Dr. Stewart is affiliated with Kaiser Permanente Zion Medical Center.
What medical group is Dr. Ethan Robert Stewart part of?
Dr. Stewart is linked to Southern California Permanente Medical Group.
Does Dr. Ethan Robert Stewart accept Medicare?
Yes. CMS lists Dr. Stewart as accepting Medicare assignment.
Is Dr. Ethan Robert Stewart board certified?
Yes. Dr. Stewart is board certified in infectious disease by the American Board of Internal Medicine.
Show 7 more questionsShow fewer questions
Where did Dr. Ethan Robert Stewart go to medical school?
Dr. Stewart graduated from Arizona College of Osteopathic Medicine - Glendale in 2010.
What drugs does Dr. Ethan Robert Stewart prescribe most?
In 2024 Medicare Part D data, Dr. Stewart's most prescribed drugs by claims were Doxycycline Monohydrate, Cresemba and Fluconazole.
Has Dr. Ethan Robert Stewart received payments from drug or device companies?
CMS Open Payments shows $319 in general payments to Dr. Stewart from 1 company from 2016 to 2016. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Ethan Robert Stewart been practicing?
Dr. Stewart graduated from medical school in 2010, 16 years ago.
Does Dr. Ethan Robert Stewart do research?
Dmand AI links 7 publications to Dr. Stewart, published from 2015 to 2022.
Who does Dr. Ethan Robert Stewart publish with?
Dr. Stewart's most frequent co-authors are Sarah E. Waldman, MD (2 shared papers), Stuart H. Cohen, MD (1 shared paper) and Fariba M. Donovan, MD (1 shared paper).
What insurance does Dr. Ethan Robert Stewart accept?
Dr. Stewart is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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