Kaitlin E. Mastalerz, PA-C
- Medicare patients, 2024
- 171
- Part D claims, 2024
- 117
- MIPS score, 2024
- 95
- Hospital affiliations
- 1
- Medical group
- 1
- 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 Kaitlin Mastalerz'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.
Kaitlin E. Mastalerz is a physician assistant in Lake Forest, Illinois
Kaitlin Mastalerz practices at Northwestern Catherine Gratz Griffin Lake Forest Hospital in Lake Forest, Illinois.
Kaitlin Mastalerz's NPI, 1023404886, was assigned on April 8, 2015. Kaitlin Mastalerz holds Illinois license 085.005883.
- NPI
- 1023404886NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8527354018
- NPI enumeration date
- April 8, 2015
- 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
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Kaitlin E. Mastalerz practices at Northwestern Catherine Gratz Griffin Lake Forest Hospital in Lake Forest, Illinois
Kaitlin Mastalerz'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
Kaitlin E. Mastalerz is affiliated with 3 sites of care and 1 medical group
Kaitlin Mastalerz's primary practice is Northwestern Catherine Gratz Griffin Lake Forest Hospital in Lake Forest, Illinois. Kaitlin Mastalerz 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 Kaitlin Mastalerz 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 Kaitlin E. Mastalerz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Kaitlin Mastalerz 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 affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Kaitlin E. Mastalerz is one of 4,299 physician assistants in Illinois
Physician assistant is Kaitlin Mastalerz's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Kaitlin Mastalerz is licensed in Illinois.
Specialties and state licenses
- Physician assistant, IllinoisPrimary
Physician assistants near Kaitlin Mastalerz
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
Kaitlin E. Mastalerz treated 171 Medicare patients in 2024, average age 77
CMS counts 171 Medicare patients who saw Kaitlin Mastalerz in 2024. The largest group is 75 to 84, with 63 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 2.23, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Kaitlin Mastalerz's median patient age at 71, with 50% women.
Kaitlin Mastalerz's Medicare patients by age, 2024
Kaitlin Mastalerz's Medicare patients by sex, 2024
- Women9254%
- Men7946%
Chronic conditions among Kaitlin Mastalerz's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis68%
- Ischemic heart disease59%
- Diabetes48%
- Chronic kidney disease46%
- Heart failure43%
- Atrial fibrillation42%
Share of Medicare patients with each condition. A patient can have several.
Kaitlin Mastalerz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Kaitlin E. Mastalerz wrote 117 Medicare Part D claims in 2024
In 2024, Kaitlin Mastalerz wrote 117 Medicare Part D claims for 56 patients. 85% of them were for generic drugs.
Kaitlin Mastalerz's Part D claims by kind of drug, 2024
- Generic99 claims85%
- Brand-name and other18 claims15%
Drug classes CMS tracks in Kaitlin Mastalerz's Part D claims, 2024
- Antibiotics23%27 of 117 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Kaitlin E. Mastalerz 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 Kaitlin Mastalerz for performance year 2024, reported through an alternative payment model (APM). Kaitlin Mastalerz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Kaitlin Mastalerz'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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Sources for Kaitlin E. Mastalerz'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 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) |
| 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 Kaitlin E. Mastalerz
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Kaitlin E. Mastalerz's NPI number?
Kaitlin E. Mastalerz's NPI number is 1023404886. It was assigned on April 8, 2015, and it is active in the NPI Registry.
What does Kaitlin E. Mastalerz specialize in?
Kaitlin E. Mastalerz is a physician assistant in Lake Forest, Illinois. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Kaitlin E. Mastalerz practice?
Kaitlin Mastalerz practices at 1000 N Westmoreland Rd, Lake Forest, IL 60045. Kaitlin Mastalerz's primary practice is Northwestern Catherine Gratz Griffin Lake Forest Hospital in Lake Forest, Illinois. Dmand AI also links Kaitlin Mastalerz to 1 group practice or clinic.
What is Kaitlin E. Mastalerz's office phone number?
The practice phone on file for Kaitlin Mastalerz is (847) 234-5600.
What is Kaitlin E. Mastalerz's medical license number?
Kaitlin Mastalerz holds Illinois license 085.005883.
Which hospitals is Kaitlin E. Mastalerz affiliated with?
Kaitlin Mastalerz is affiliated with Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital.
What medical group is Kaitlin E. Mastalerz part of?
Kaitlin Mastalerz is linked to Northwestern Medical Faculty Foundation.
Does Kaitlin E. Mastalerz accept Medicare?
Yes. CMS lists Kaitlin Mastalerz as accepting Medicare assignment.
What is Kaitlin E. Mastalerz's MIPS score?
Kaitlin Mastalerz'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 Kaitlin E. Mastalerz see?
CMS counts 171 Medicare patients who saw Kaitlin Mastalerz in 2024, with an average age of 77.
How long has Kaitlin E. Mastalerz been practicing?
Kaitlin Mastalerz graduated from medical school in 2016, 10 years ago.
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