Mary Kay Larson, APN
- Part D claims, 2024
- 64
- Affiliated sites
- 1
- Medical groups
- 4
- State license
- 1
- Year NPI issued
- 2008
- Practice address
- 4405 Weaver Pkwy, Warrenville, IL 60555-3269
- Practice phone
- Call (630) 352-5580
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northwestern Medicine Regional Medical Group
Multi-specialty group site · Warrenville, Illinois
Find Mary Kay Larson'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.
Mary Kay Larson is a nurse practitioner in Warrenville, Illinois
Mary Kay Larson practices at Northwestern Medicine Regional Medical Group in Warrenville, Illinois.
Mary Kay Larson's NPI, 1124293691, was assigned on April 25, 2008. Mary Kay Larson holds Illinois license 209006678.
- NPI
- 1124293691NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2769534221
- NPI enumeration date
- April 25, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (630) 352-5580
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mary Kay Larson practices at Northwestern Medicine Regional Medical Group in Warrenville, Illinois
Mary Kay Larson's primary practice is Northwestern Medicine Regional Medical Group, at 4405 Weaver Pkwy, Warrenville, IL 60555-3269. The practice phone is (630) 352-5580.
- Northwestern Medicine Regional Medical Group4405 Weaver Pkwy, Warrenville, IL 60555-3269Phone(630) 352-5580
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mary Kay Larson is affiliated with 1 site of care and 4 medical groups
Mary Kay Larson's primary practice is Northwestern Medicine Regional Medical Group in Warrenville, Illinois. The medical group on file is Northwestern Medicine Regional Medical Group. Dmand AI also links Mary Kay Larson to 3 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Mary Kay Larson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mary Kay Larson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Medicine Regional Medical Group | Available with a free account |
| +3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Mary Kay Larson is one of 4,254 nurse practitioners in Illinois
Nurse practitioner is Mary Kay Larson's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Mary Kay Larson is licensed in Illinois.
Specialties and state licenses
- Nurse practitioner, IllinoisPrimary
Nurse practitioners near Mary Kay Larson
Counts of nurse practitioners 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
Mary Kay Larson wrote 64 Medicare Part D claims in 2024
In 2024, Mary Kay Larson wrote 64 Medicare Part D claims for 21 patients. 98% of them were for generic drugs.
Mary Kay Larson's Part D claims by kind of drug, 2024
- Generic63 claims98%
- Brand-name and other1 claims2%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Mary Kay Larson takes part in Medicare
Mary Kay Larson 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sources for Mary Kay Larson'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 | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (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) |
| 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 Mary Kay Larson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mary Kay Larson's NPI number?
Mary Kay Larson's NPI number is 1124293691. It was assigned on April 25, 2008, and it is active in the NPI Registry.
What does Mary Kay Larson specialize in?
Mary Kay Larson is a nurse practitioner in Warrenville, Illinois. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Mary Kay Larson practice?
Mary Kay Larson practices at 4405 Weaver Pkwy, Warrenville, IL 60555-3269. Mary Kay Larson's primary practice is Northwestern Medicine Regional Medical Group in Warrenville, Illinois. Dmand AI also links Mary Kay Larson to 3 medical groups.
What is Mary Kay Larson's office phone number?
The practice phone on file for Mary Kay Larson is (630) 352-5580.
What is Mary Kay Larson's medical license number?
Mary Kay Larson holds Illinois license 209006678.
What medical group is Mary Kay Larson part of?
Mary Kay Larson is linked to Northwestern Medicine Regional Medical Group. Dmand AI links Mary Kay Larson to 3 more medical groups.
Does Mary Kay Larson accept Medicare?
Yes. CMS lists Mary Kay Larson as accepting Medicare assignment.
How long has Mary Kay Larson been practicing?
Mary Kay Larson's NPI was assigned in 2008.
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