Maria L. Diener, PA-C
- Medicare patients, 2024
- 74
- Part D claims, 2024
- 696
- Hospital affiliations
- 1
- Industry payments
- $128
- Medical groups
- 2
- Practice address
- 9200 W Wisconsin Ave, Milwaukee, WI 53226
- Practice phone
- Call (414) 805-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Maria Diener's professional email, personal email and mobile number
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Maria L. Diener is a physician assistant in Milwaukee, Wisconsin
Maria Diener practices at Froedtert Hospital in Milwaukee, Wisconsin, part of Froedtert ThedaCare Health.
Maria Diener's NPI, 1295925576, was assigned on August 1, 2007. Maria Diener holds Wisconsin license 2237-023.
- NPI
- 1295925576NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6800980319
- NPI enumeration date
- August 1, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (414) 805-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Maria L. Diener practices at Froedtert Hospital in Milwaukee, Wisconsin
Maria Diener's primary practice is Froedtert Hospital, at 9200 W Wisconsin Ave, Milwaukee, WI 53226 in Milwaukee County. The practice phone is (414) 805-3000.
- Froedtert Hospital9200 W Wisconsin Ave, Milwaukee, WI 53226 · Milwaukee CountyPhone(414) 805-3000
Source: Dmand AI Affiliation Data
Maria L. Diener is affiliated with 1 site of care and 2 medical groups
Maria Diener's primary practice is Froedtert Hospital in Milwaukee, Wisconsin, part of Froedtert ThedaCare Health. The medical group on file is Froedtert & the Medical College of Wisconsin Community Physicians. Dmand AI also links Maria Diener to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Maria L. Diener's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Maria Diener practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Froedtert Hospital | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Froedtert ThedaCare Health and 6.2K+ hospitals, with verified contacts in the same login.
Maria L. Diener is one of 3,127 physician assistants in Wisconsin
Physician assistant is Maria Diener's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Maria Diener is licensed in Wisconsin.
Specialties and state licenses
- Physician assistant, WisconsinPrimary
Physician assistants near Maria Diener
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
Maria L. Diener treated 74 Medicare patients in 2024, average age 67
CMS counts 74 Medicare patients who saw Maria Diener in 2024. The largest group is 65 to 74, with 37 patients. 75% of them have heart failure, and 75% have high blood pressure. 27% are also on Medicaid. Their average risk score is 3.27, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Maria Diener's median patient age at 64, with 37% women.
Maria Diener's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Maria Diener's Medicare patients by sex, 2024
- Women2838%
- Men4662%
Chronic conditions among Maria Diener's Medicare patients, 2024
- Heart failure75%
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease66%
- Ischemic heart disease65%
- Atrial fibrillation61%
- Diabetes57%
- Arthritis39%
Share of Medicare patients with each condition. A patient can have several.
Maria Diener's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women37%
- Men62%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Maria L. Diener wrote 696 Medicare Part D claims in 2024
In 2024, Maria Diener wrote 696 Medicare Part D claims for 139 patients. 73% of them were for generic drugs.
Maria Diener's Part D claims by kind of drug, 2024
- Generic507 claims73%
- Brand-name189 claims27%
Drug classes CMS tracks in Maria Diener's Part D claims, 2024
- Antibiotics2%11 of 696 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
Maria L. Diener offers telehealth to Medicare patients
Maria Diener accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Maria Diener as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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Maria L. Diener received $128 in industry payments in 2025
CMS Open Payments shows 2 general payments to Maria Diener from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $112.
Companies that paid Maria Diener 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 Maria L. Diener'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 Maria L. Diener
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Maria L. Diener's NPI number?
Maria L. Diener's NPI number is 1295925576. It was assigned on August 1, 2007, and it is active in the NPI Registry.
What does Maria L. Diener specialize in?
Maria L. Diener is a physician assistant in Milwaukee, Wisconsin. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Maria L. Diener practice?
Maria Diener practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. Maria Diener's primary practice is Froedtert Hospital in Milwaukee, Wisconsin, part of Froedtert ThedaCare Health. Dmand AI also links Maria Diener to 1 medical group.
What is Maria L. Diener's office phone number?
The practice phone on file for Maria Diener is (414) 805-3000.
What is Maria L. Diener's medical license number?
Maria Diener holds Wisconsin license 2237-023.
Which hospitals is Maria L. Diener affiliated with?
Maria Diener practices at Froedtert Hospital in Milwaukee, Wisconsin.
What medical group is Maria L. Diener part of?
Maria Diener is linked to Froedtert & the Medical College of Wisconsin Community Physicians. Dmand AI links Maria Diener to 1 more medical group.
Does Maria L. Diener accept Medicare?
Yes. CMS lists Maria Diener as accepting Medicare assignment.
Does Maria L. Diener offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Maria Diener as offering telehealth services.
How many Medicare patients does Maria L. Diener see?
CMS counts 74 Medicare patients who saw Maria Diener in 2024, with an average age of 67.
Has Maria L. Diener received payments from drug or device companies?
CMS Open Payments shows $128 in general payments to Maria Diener from 2 companies from 2025 to 2025. The largest total came from Pfizer Inc.
How long has Maria L. Diener been practicing?
Maria Diener graduated from medical school in 2007, 19 years ago.
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