Mary L. Marshall, APN
- Medicare patients, 2024
- 496
- Part D claims, 2024
- 4,128
- Hospital affiliations
- 4
- Industry payments
- $21
- Medical group
- 1
- Practice address
- 444 Roxbury Rd, Rockford, IL 61107
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
OSF Cardiovascular Institute - HOPD
Acute Care Hospital outpatient department · Rockford, Illinois
Find Mary Marshall'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 L. Marshall is a nurse practitioner in Rockford, Illinois
Mary Marshall practices at OSF Cardiovascular Institute - HOPD in Rockford, Illinois.
Mary Marshall's NPI, 1770030801, was assigned on September 7, 2016. Mary Marshall holds Illinois license 209-014991.
- NPI
- 1770030801NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3476831579
- NPI enumeration date
- September 7, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- 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 Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mary L. Marshall practices at OSF Cardiovascular Institute - HOPD in Rockford, Illinois
Mary Marshall's primary practice is OSF Cardiovascular Institute - HOPD, at 444 Roxbury Rd, Rockford, IL 61107.
- OSF Cardiovascular Institute - HOPD444 Roxbury Rd, Rockford, IL 61107
Source: Dmand AI Affiliation Data
Mary L. Marshall is affiliated with 6 sites of care and 1 medical group
Mary Marshall's primary practice is OSF Cardiovascular Institute - HOPD in Rockford, Illinois. Mary Marshall is also affiliated with OSF Saint Anthony Medical Center. The medical group on file is OSF Multi-Specialty Group. Dmand AI also links Mary Marshall to 3 more hospitals and 1 group practice or clinic, each named with a free account. Mary Marshall's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Mary L. Marshall's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mary Marshall practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OSF Cardiovascular Institute - HOPD | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Mary L. Marshall is one of 4,254 nurse practitioners in Illinois
Nurse practitioner is Mary Marshall's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Mary Marshall is licensed in Illinois.
Specialties and state licenses
- Nurse practitioner, IllinoisPrimary
Nurse practitioners near Mary Marshall
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 L. Marshall treated 496 Medicare patients in 2024, average age 76
CMS counts 496 Medicare patients who saw Mary Marshall in 2024. The largest group is 75 to 84, with 202 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.57, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Mary Marshall's median patient age at 76, with 45% women.
Mary Marshall's Medicare patients by age, 2024
Mary Marshall's Medicare patients by sex, 2024
- Women22044%
- Men27656%
Chronic conditions among Mary Marshall's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease65%
- Arthritis51%
- Diabetes40%
- Atrial fibrillation39%
- Heart failure39%
- Chronic kidney disease33%
Share of Medicare patients with each condition. A patient can have several.
Mary Marshall's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women45%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mary L. Marshall wrote 4,128 Medicare Part D claims in 2024
In 2024, Mary Marshall wrote 4,128 Medicare Part D claims for 789 patients. 87% of them were for generic drugs.
Mary Marshall's Part D claims by kind of drug, 2024
- Generic3,579 claims87%
- Brand-name549 claims13%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Mary L. Marshall offers telehealth to Medicare patients
Mary Marshall accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Mary Marshall as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Mary L. Marshall received $21 in industry payments in 2025
CMS Open Payments shows 1 general payment to Mary Marshall from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $21.
Companies that paid Mary Marshall 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 Mary L. Marshall'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 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 Mary L. Marshall
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 L. Marshall's NPI number?
Mary L. Marshall's NPI number is 1770030801. It was assigned on September 7, 2016, and it is active in the NPI Registry.
What does Mary L. Marshall specialize in?
Mary L. Marshall is a nurse practitioner in Rockford, Illinois. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Mary L. Marshall practice?
Mary Marshall practices at 444 Roxbury Rd, Rockford, IL 61107. Mary Marshall's primary practice is OSF Cardiovascular Institute - HOPD in Rockford, Illinois. Dmand AI also links Mary Marshall to 3 hospitals and 1 group practice or clinic.
What is Mary L. Marshall's medical license number?
Mary Marshall holds Illinois license 209-014991.
Which hospitals is Mary L. Marshall affiliated with?
Mary Marshall is affiliated with OSF Saint Anthony Medical Center. Dmand AI links Mary Marshall to 3 more hospitals.
What medical group is Mary L. Marshall part of?
Mary Marshall is linked to OSF Multi-Specialty Group.
Does Mary L. Marshall accept Medicare?
Yes. CMS lists Mary Marshall as accepting Medicare assignment.
Does Mary L. Marshall offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Mary Marshall as offering telehealth services.
How many Medicare patients does Mary L. Marshall see?
CMS counts 496 Medicare patients who saw Mary Marshall in 2024, with an average age of 76.
Has Mary L. Marshall received payments from drug or device companies?
CMS Open Payments shows $21 in general payments to Mary Marshall from 1 company from 2025 to 2025. The largest total came from Abbott Laboratories.
How long has Mary L. Marshall been practicing?
Mary Marshall graduated from medical school in 2016, 10 years ago.
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