Marianne H. Laff, APRN, CNP, NP
- Medicare patients, 2024
- 89
- Part D claims, 2024
- 1,008
- Hospital affiliations
- 2
- Industry payments
- $16
- Medical groups
- 2
- Practice address
- 1045 West Stephenson Street, Freeport, IL 61032
- Practice phone
- Call (815) 599-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Marianne Laff's professional email, personal email and mobile number
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Marianne H. Laff is a nurse practitioner in Freeport, Illinois
Marianne Laff practices at Mercyhealth Hospital-Freeport in Freeport, Illinois, part of Mercyhealth.
Marianne Laff's NPI, 1215916788, was assigned on January 12, 2006. Marianne Laff holds Illinois license 209003791.
- NPI
- 1215916788NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901799303
- NPI enumeration date
- January 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (815) 599-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Marianne H. Laff practices at Mercyhealth Hospital-Freeport in Freeport, Illinois
Marianne Laff's primary practice is Mercyhealth Hospital-Freeport, at 1045 West Stephenson Street, Freeport, IL 61032 in Stephenson County. The practice phone is (815) 599-6000.
- Mercyhealth Hospital-Freeport1045 West Stephenson Street, Freeport, IL 61032 · Stephenson CountyPhone(815) 599-6000
Source: Dmand AI Affiliation Data
Marianne H. Laff is affiliated with 3 sites of care and 2 medical groups
Marianne Laff's primary practice is Mercyhealth Hospital-Freeport in Freeport, Illinois, part of Mercyhealth. Marianne Laff is also affiliated with Loyola University Medical Center. The medical group on file is FHN. Dmand AI also links Marianne Laff to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Marianne H. Laff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Marianne Laff practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercyhealth Hospital-Freeport | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Marianne H. Laff is one of 4,254 nurse practitioners in Illinois
Nurse practitioner is Marianne Laff's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Marianne Laff is licensed in Illinois.
Specialties and state licenses
- Nurse practitioner, IllinoisPrimary
Nurse practitioners near Marianne Laff
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
Marianne H. Laff treated 89 Medicare patients in 2024, average age 74
CMS counts 89 Medicare patients who saw Marianne Laff in 2024. The largest group is 65 to 74, with 39 patients. 70% of them have high cholesterol, and 67% have high blood pressure. 22% are also on Medicaid. Their average risk score is 1.20, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Marianne Laff's median patient age at 70, with 62% women.
Marianne Laff's Medicare patients by age, 2024
Marianne Laff's Medicare patients by sex, 2024
- Women4348%
- Men4652%
Chronic conditions among Marianne Laff's Medicare patients, 2024
- High cholesterol70%
- High blood pressure67%
- Diabetes39%
- Arthritis35%
- Ischemic heart disease31%
- COPD30%
- Chronic kidney disease28%
- Anxiety22%
Share of Medicare patients with each condition. A patient can have several.
Marianne Laff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women62%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Marianne H. Laff wrote 1,008 Medicare Part D claims in 2024
In 2024, Marianne Laff wrote 1,008 Medicare Part D claims for 163 patients. 84% of them were for generic drugs.
Marianne Laff's Part D claims by kind of drug, 2024
- Generic849 claims84%
- Brand-name and other159 claims16%
Drug classes CMS tracks in Marianne Laff's Part D claims, 2024
- Opioids2%19 of 1,008 claims
- Antibiotics9%92 of 1,008 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
How Marianne H. Laff takes part in Medicare
Marianne Laff 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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Marianne H. Laff received $16 in industry payments in 2025
CMS Open Payments shows 1 general payment to Marianne Laff from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $16.
Companies that paid Marianne Laff 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 Marianne H. Laff'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 Data |
| Primary practice, affiliations and health system | Dmand 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) |
| 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 Marianne H. Laff
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Marianne H. Laff's NPI number?
Marianne H. Laff's NPI number is 1215916788. It was assigned on January 12, 2006, and it is active in the NPI Registry.
What does Marianne H. Laff specialize in?
Marianne H. Laff is a nurse practitioner in Freeport, Illinois. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Marianne H. Laff practice?
Marianne Laff practices at 1045 West Stephenson Street, Freeport, IL 61032. Marianne Laff's primary practice is Mercyhealth Hospital-Freeport in Freeport, Illinois, part of Mercyhealth. Dmand AI also links Marianne Laff to 1 group practice or clinic and 1 medical group.
What is Marianne H. Laff's office phone number?
The practice phone on file for Marianne Laff is (815) 599-6000.
What is Marianne H. Laff's medical license number?
Marianne Laff holds Illinois license 209003791.
Which hospitals is Marianne H. Laff affiliated with?
Marianne Laff practices at Mercyhealth Hospital-Freeport in Freeport, Illinois. Marianne Laff is also affiliated with Loyola University Medical Center.
What medical group is Marianne H. Laff part of?
Marianne Laff is linked to FHN. Dmand AI links Marianne Laff to 1 more medical group.
Does Marianne H. Laff accept Medicare?
Yes. CMS lists Marianne Laff as accepting Medicare assignment.
How many Medicare patients does Marianne H. Laff see?
CMS counts 89 Medicare patients who saw Marianne Laff in 2024, with an average age of 74.
Has Marianne H. Laff received payments from drug or device companies?
CMS Open Payments shows $16 in general payments to Marianne Laff from 1 company from 2025 to 2025. The largest total came from Amgen Inc.
How long has Marianne H. Laff been practicing?
Marianne Laff graduated from medical school in 1993, 33 years ago.
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