Diane M. Stierwalt, CNP
- Medicare patients, 2024
- 39
- Part D claims, 2024
- 27
- Hospital affiliations
- 2
- Industry payments
- $228
- Medical groups
- 3
- Practice address
- 625 S New Ballas Rd, Saint Louis, MO 63141
- Practice phone
- Call (314) 251-6970
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mercy Heart and Vascular Hospital St. Louis
Saint Louis, Missouri
Find Diane Stierwalt'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.
Diane M. Stierwalt is a nurse practitioner in Saint Louis, Missouri
Diane Stierwalt practices at Mercy Heart and Vascular Hospital St. Louis in Saint Louis, Missouri.
Diane Stierwalt's NPI, 1194722645, was assigned on June 30, 2005. Diane Stierwalt holds Illinois license 041321448.
- NPI
- 1194722645NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082503602
- NPI enumeration date
- June 30, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 251-6970
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Diane M. Stierwalt practices at Mercy Heart and Vascular Hospital St. Louis in Saint Louis, Missouri
Diane Stierwalt's primary practice is Mercy Heart and Vascular Hospital St. Louis, at 625 S New Ballas Rd, Saint Louis, MO 63141 in Saint Louis County. The practice phone is (314) 251-6970.
- Mercy Heart and Vascular Hospital St. Louis625 S New Ballas Rd, Saint Louis, MO 63141 · Saint Louis CountyPhone(314) 251-6970
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Diane M. Stierwalt is affiliated with 5 sites of care and 3 medical groups
Diane Stierwalt's primary practice is Mercy Heart and Vascular Hospital St. Louis in Saint Louis, Missouri. Diane Stierwalt is also affiliated with Mercy Hospital South. The medical group on file is Mercy Clinic Cardiovascular and Thoracic Surgery. Dmand AI also links Diane Stierwalt to 1 more hospital, 2 group practices and clinics and 2 medical groups, each 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 Diane M. Stierwalt's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Diane Stierwalt practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Heart and Vascular Hospital St. Louis | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Diane M. Stierwalt is one of 1,347 nurse practitioners in Missouri
Nurse practitioner is Diane Stierwalt's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Diane Stierwalt is licensed in Illinois.
Specialties and state licenses
- Nurse practitioner, IllinoisPrimary
Nurse practitioners near Diane Stierwalt
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
Diane M. Stierwalt treated 39 Medicare patients in 2024, average age 74
CMS counts 39 Medicare patients who saw Diane Stierwalt in 2024. The largest group is 65 to 74, with 21 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.51, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Diane Stierwalt's median patient age at 71, with 51% women.
Diane Stierwalt's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Diane Stierwalt's Medicare patients by sex, 2024
- Women1641%
- Men2359%
Chronic conditions among Diane Stierwalt's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Chronic kidney disease59%
- Heart failure59%
- Arthritis56%
- Diabetes56%
- Atrial fibrillation51%
Share of Medicare patients with each condition. A patient can have several.
Diane Stierwalt'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
- Women51%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Diane M. Stierwalt wrote 27 Medicare Part D claims in 2024
In 2024, Diane Stierwalt wrote 27 Medicare Part D claims for 17 patients. 89% of them were for generic drugs.
Diane Stierwalt's Part D claims by kind of drug, 2024
- Generic24 claims89%
- Brand-name and other3 claims11%
Drug classes CMS tracks in Diane Stierwalt's Part D claims, 2024
- Antibiotics41%11 of 27 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 Diane M. Stierwalt takes part in Medicare
Diane Stierwalt 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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Diane M. Stierwalt received $228 in industry payments in 2025
CMS Open Payments shows 10 general payments to Diane Stierwalt from 7 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. AtriCure, Inc. paid the most, $73.
Companies that paid Diane Stierwalt 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 Diane M. Stierwalt'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) |
| 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 Diane M. Stierwalt
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Diane M. Stierwalt's NPI number?
Diane M. Stierwalt's NPI number is 1194722645. It was assigned on June 30, 2005, and it is active in the NPI Registry.
What does Diane M. Stierwalt specialize in?
Diane M. Stierwalt is a nurse practitioner in Saint Louis, Missouri. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Diane M. Stierwalt practice?
Diane Stierwalt practices at 625 S New Ballas Rd, Saint Louis, MO 63141. Diane Stierwalt's primary practice is Mercy Heart and Vascular Hospital St. Louis in Saint Louis, Missouri. Dmand AI also links Diane Stierwalt to 1 hospital, 2 group practices and clinics and 2 medical groups.
What is Diane M. Stierwalt's office phone number?
The practice phone on file for Diane Stierwalt is (314) 251-6970.
What is Diane M. Stierwalt's medical license number?
Diane Stierwalt holds Illinois license 041321448.
Which hospitals is Diane M. Stierwalt affiliated with?
Diane Stierwalt is affiliated with Mercy Hospital South. Dmand AI links Diane Stierwalt to 1 more hospital.
What medical group is Diane M. Stierwalt part of?
Diane Stierwalt is linked to Mercy Clinic Cardiovascular and Thoracic Surgery. Dmand AI links Diane Stierwalt to 2 more medical groups.
Does Diane M. Stierwalt accept Medicare?
Yes. CMS lists Diane Stierwalt as accepting Medicare assignment.
How many Medicare patients does Diane M. Stierwalt see?
CMS counts 39 Medicare patients who saw Diane Stierwalt in 2024, with an average age of 74.
Has Diane M. Stierwalt received payments from drug or device companies?
CMS Open Payments shows $228 in general payments to Diane Stierwalt from 7 companies from 2025 to 2025. The largest total came from AtriCure, Inc.
How long has Diane M. Stierwalt been practicing?
Diane Stierwalt graduated from medical school in 2003, 23 years ago.
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