Karla E. Stewart, PA-C
- Medicare patients, 2024
- 192
- Part D claims, 2024
- 187
- MIPS score, 2024
- 95
- Hospital affiliations
- 2
- Industry payments
- $24
- Practice address
- 1000 N Westmoreland Rd, Lake Forest, IL 60045
- Practice phone
- Call (847) 234-5600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northwestern Catherine Gratz Griffin Lake Forest Hospital
Lake Forest, Illinois
Find Karla 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.
Karla E. Stewart is a physician assistant in Lake Forest, Illinois
Karla Stewart practices at Northwestern Catherine Gratz Griffin Lake Forest Hospital in Lake Forest, Illinois.
Karla Stewart's NPI, 1598746521, was assigned on November 8, 2005. Karla Stewart holds Illinois license 085.005063.
- NPI
- 1598746521NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4284714841
- NPI enumeration date
- November 8, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (847) 234-5600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Karla E. Stewart practices at Northwestern Catherine Gratz Griffin Lake Forest Hospital in Lake Forest, Illinois
Karla Stewart's primary practice is Northwestern Catherine Gratz Griffin Lake Forest Hospital, at 1000 N Westmoreland Rd, Lake Forest, IL 60045 in Lake County. The practice phone is (847) 234-5600.
- Northwestern Catherine Gratz Griffin Lake Forest Hospital1000 N Westmoreland Rd, Lake Forest, IL 60045 · Lake CountyPhone(847) 234-5600
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Karla E. Stewart is affiliated with 3 sites of care and 2 medical groups
Karla Stewart's primary practice is Northwestern Catherine Gratz Griffin Lake Forest Hospital in Lake Forest, Illinois. Karla Stewart is also affiliated with Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Karla Stewart to 1 more hospital and 1 medical group, each named with a free account.
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 Karla E. Stewart's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Karla Stewart practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Catherine Gratz Griffin Lake Forest Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Karla E. Stewart is one of 4,299 physician assistants in Illinois
Physician assistant is Karla Stewart's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Karla Stewart is licensed in Illinois.
Specialties and state licenses
- Physician assistant, IllinoisPrimary
Physician assistants near Karla Stewart
Counts of physician assistants 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
Karla E. Stewart treated 192 Medicare patients in 2024, average age 75
CMS counts 192 Medicare patients who saw Karla Stewart in 2024. The largest group is 65 to 74, with 87 patients. 75% of them have arthritis, and 75% have high blood pressure. 9% are also on Medicaid. Their average risk score is 1.42, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Karla Stewart's median patient age at 65, with 65% women.
Karla Stewart's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Karla Stewart's Medicare patients by sex, 2024
- Women11660%
- Men7640%
Chronic conditions among Karla Stewart's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol71%
- Ischemic heart disease32%
- Diabetes30%
- Anxiety27%
- Mood disorders25%
- Chronic kidney disease24%
Share of Medicare patients with each condition. A patient can have several.
Karla 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 65
Patient panel by sex, all payers
- Women65%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Karla E. Stewart wrote 187 Medicare Part D claims in 2024
In 2024, Karla Stewart wrote 187 Medicare Part D claims for 73 patients. 99% of them were for generic drugs.
Karla Stewart's Part D claims by kind of drug, 2024
- Generic186 claims99%
- Brand-name and other1 claims1%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Karla E. Stewart scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Karla Stewart for performance year 2024, reported through an alternative payment model (APM). Karla Stewart accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Karla Stewart's MIPS scores, performance year 2024
- 95of 100Final score
- 83of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Karla E. Stewart received $24 in industry payments in 2025
CMS Open Payments shows 1 general payment to Karla Stewart from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Lightbody Medical Technologies Inc paid the most, $24.
Companies that paid Karla Stewart the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Karla E. 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | 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)Clinician Public Reporting: Overall MIPS Performance (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 Karla E. 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 Karla E. Stewart's NPI number?
Karla E. Stewart's NPI number is 1598746521. It was assigned on November 8, 2005, and it is active in the NPI Registry.
What does Karla E. Stewart specialize in?
Karla E. Stewart is a physician assistant in Lake Forest, Illinois. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Karla E. Stewart practice?
Karla Stewart practices at 1000 N Westmoreland Rd, Lake Forest, IL 60045. Karla Stewart's primary practice is Northwestern Catherine Gratz Griffin Lake Forest Hospital in Lake Forest, Illinois. Dmand AI also links Karla Stewart to 1 hospital and 1 medical group.
What is Karla E. Stewart's office phone number?
The practice phone on file for Karla Stewart is (847) 234-5600.
What is Karla E. Stewart's medical license number?
Karla Stewart holds Illinois license 085.005063.
Which hospitals is Karla E. Stewart affiliated with?
Karla Stewart is affiliated with Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital. Dmand AI links Karla Stewart to 1 more hospital.
What medical group is Karla E. Stewart part of?
Karla Stewart is linked to Northwestern Medical Faculty Foundation. Dmand AI links Karla Stewart to 1 more medical group.
Does Karla E. Stewart accept Medicare?
Yes. CMS lists Karla Stewart as accepting Medicare assignment.
What is Karla E. Stewart's MIPS score?
Karla Stewart's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Karla E. Stewart see?
CMS counts 192 Medicare patients who saw Karla Stewart in 2024, with an average age of 75.
Has Karla E. Stewart received payments from drug or device companies?
CMS Open Payments shows $24 in general payments to Karla Stewart from 1 company from 2025 to 2025. The largest total came from Lightbody Medical Technologies Inc.
How long has Karla E. Stewart been practicing?
Karla Stewart graduated from medical school in 2002, 24 years ago.
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