Dr. John S. Stewart, DO
- Medicare services, 2024
- 2,875
- Medicare patients, 2024
- 179
- Part D claims, 2024
- 256
- Industry payments
- $4,745
- Affiliated sites
- 1
- Practice address
- 9377 E Bell Rd, Scottsdale, AZ 85260
- Practice phone
- Call (480) 563-4263
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northstar Healthcare Surgery Center-Scottsdale LLC
Scottsdale, Arizona
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. John S. Stewart is an otolaryngologist in Scottsdale, Arizona
Dr. Stewart practices at Northstar Healthcare Surgery Center-Scottsdale LLC in Scottsdale, Arizona.
Dr. Stewart's NPI, 1447220926, was assigned on January 25, 2006. Dr. Stewart holds Alabama license DO.3936.
- NPI
- 1447220926NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1951389055
- NPI enumeration date
- January 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (480) 563-4263
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John S. Stewart practices at Northstar Healthcare Surgery Center-Scottsdale LLC in Scottsdale, Arizona
Dr. Stewart's primary practice is Northstar Healthcare Surgery Center-Scottsdale LLC, at 9377 E Bell Rd, Scottsdale, AZ 85260 in Maricopa County. The practice phone is (480) 563-4263.
- Northstar Healthcare Surgery Center-Scottsdale LLC9377 E Bell Rd, Scottsdale, AZ 85260 · Maricopa CountyPhone(480) 563-4263
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John S. Stewart is affiliated with 2 sites of care and 1 medical group
Dr. Stewart's primary practice is Northstar Healthcare Surgery Center-Scottsdale LLC in Scottsdale, Arizona. The medical group on file is Breathe Better Institute. Dmand AI also links Dr. Stewart to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John S. 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 |
|---|---|
| Northstar Healthcare Surgery Center-Scottsdale LLC | 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. John S. Stewart is one of 148 otolaryngologists in Arizona
Otolaryngology is Dr. Stewart's primary specialty in the NPI Registry, under taxonomy code 207Y00000X. Dmand AI has Dr. Stewart's licenses on file in 3 states: Alabama, Arizona and Mississippi.
Specialties and state licenses
- Otolaryngology, AlabamaPrimary
- Arizona license
- Otolaryngology/facial plastic surgery, Mississippi
Otolaryngologists near Dr. Stewart
Counts of otolaryngologists 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. John S. Stewart billed Medicare for 2,875 services in 2024
CMS data shows 2,875 Medicare services from Dr. Stewart across 13 procedure codes in 2024, for 179 Medicare patients. Medicare paid $422,295 for them. Every service was in an office.
Dr. Stewart's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 1,8262024: 2,06013%
- Surgery
- 2023: 5362024: 5115%
- Office and hospital visits
- 2023: 2142024: 2234%
- Imaging
- 2023: 1392024: 8142%
Dr. Stewart compared with the Arizona median for otolaryngologists, 2024
- Dr. Stewart
- Arizona median
- Medicare services
- 2,875vs 7084.1 times
- Medicare patients
- 179vs 29138% below
- Part D claims
- 219vs 13958% above
Medians across 154 otolaryngologists in Arizona with Dmand AI profiles that report each measure.
Dr. Stewart's 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. Stewart and other otolaryngologists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John S. Stewart treated 179 Medicare patients in 2024, average age 73
CMS counts 179 Medicare patients who saw Dr. Stewart in 2024. The largest group is 65 to 74, with 108 patients. 75% of them have high cholesterol, and 61% have high blood pressure. Their average risk score is 0.92, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Stewart's median patient age at 63, with 51% women.
Dr. Stewart's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Stewart's Medicare patients by sex, 2024
- Women8950%
- Men9050%
Chronic conditions among Dr. Stewart's Medicare patients, 2024
- High cholesterol75%
- High blood pressure61%
- Arthritis52%
- Ischemic heart disease25%
- Anxiety23%
- Diabetes22%
- Depression19%
- Mood disorders19%
Share of Medicare patients with each condition. A patient can have several.
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 63
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John S. Stewart wrote 256 Medicare Part D claims in 2024
In 2024, Dr. Stewart wrote 256 Medicare Part D claims for 96 patients. 98% of them were for generic drugs. CMS names the drug for 219 of them, across 5 drugs with 11 or more claims each, at $1,612 in total drug cost. In 2023, CMS named 263 claims across 6 drugs.
Dr. Stewart's Part D claims by kind of drug, 2024
- Generic252 claims98%
- Brand-name and other4 claims2%
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
- Antibiotics33%85 of 256 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: 2632024: 21917%
Drugs named by CMS: 5 in 2024, 6 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. John S. 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. John S. Stewart received $4,745 in industry payments from 2016 to 2025
CMS Open Payments shows 101 general payments to Dr. Stewart from 12 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 77% of the total. Intersect ENT, Inc. paid the most, $1,688.
General payments to Dr. Stewart by program year, 2016 to 2025
General payments to Dr. Stewart by kind, 2016 to 2025
- Food and beverage$3,67477%
- Travel and lodging$1,05922%
- Education$120%
Companies that paid Dr. Stewart the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John S. 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 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) |
| 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) |
| 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. John S. 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. John S. Stewart's NPI number?
Dr. John S. Stewart's NPI number is 1447220926. It was assigned on January 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John S. Stewart?
Dr. John S. Stewart is an otolaryngologist in Scottsdale, Arizona. The primary specialty in the NPI Registry is Otolaryngology Physician (taxonomy code 207Y00000X).
Where does Dr. John S. Stewart practice?
Dr. Stewart practices at 9377 E Bell Rd, Scottsdale, AZ 85260. Dr. Stewart's primary practice is Northstar Healthcare Surgery Center-Scottsdale LLC in Scottsdale, Arizona. Dmand AI also links Dr. Stewart to 1 group practice or clinic.
What is Dr. John S. Stewart's office phone number?
The practice phone on file for Dr. Stewart is (480) 563-4263.
What is Dr. John S. Stewart's medical license number?
Dr. Stewart holds Alabama license DO.3936, one of the licenses on file in 3 states.
Which states has Dr. John S. Stewart been licensed in?
Dmand AI has state licenses on file for Dr. Stewart in Alabama, Arizona and Mississippi.
What medical group is Dr. John S. Stewart part of?
Dr. Stewart is linked to Breathe Better Institute.
Does Dr. John S. Stewart accept Medicare?
Yes. CMS data shows Dr. Stewart billed Medicare for 2,875 services in 2024, and Dr. Stewart accepts Medicare assignment.
How many Medicare patients does Dr. John S. Stewart see?
CMS counts 179 Medicare patients who saw Dr. Stewart in 2024, with an average age of 73.
What services does Dr. John S. Stewart bill to Medicare?
In 2024, Dr. Stewart's most billed Medicare services were allergy test or treatment (95004), surgery: lungs and airway (31231) and office visit, new patient (99203).
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What drugs does Dr. John S. Stewart prescribe most?
In 2024 Medicare Part D data, Dr. Stewart's most prescribed drugs by claims were Methylprednisolone, Sulfamethoxazole-Trimethoprim and Lansoprazole.
Has Dr. John S. Stewart received payments from drug or device companies?
CMS Open Payments shows $4,745 in general payments to Dr. Stewart from 12 companies from 2016 to 2025. The largest total came from Intersect ENT, Inc.
How long has Dr. John S. Stewart been practicing?
Dr. Stewart graduated from medical school in 1997, 29 years ago.
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