Mary Withoelter, NP
- Medicare patients, 2024
- 247
- Part D claims, 2024
- 373
- MIPS score, 2024
- 43
- Industry payments
- $25
- Affiliated sites
- 1
- Practice address
- 507 S Main St, O Fallon, MO 63366
- Practice phone
- Call (314) 961-2255
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Total Access Urgent Care
O Fallon, Missouri
Find Mary Withoelter'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 Withoelter is a nurse practitioner in O Fallon, Missouri
Mary Withoelter practices at Total Access Urgent Care in O Fallon, Missouri.
Mary Withoelter's NPI, 1982188389, was assigned on September 20, 2018. Mary Withoelter holds Missouri license 2019033706.
- NPI
- 1982188389NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456699651
- NPI enumeration date
- September 20, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 961-2255
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Mary Withoelter practices at Total Access Urgent Care in O Fallon, Missouri
Mary Withoelter's primary practice is Total Access Urgent Care, at 507 S Main St, O Fallon, MO 63366 in Saint Charles County. The practice phone is (314) 961-2255.
- Total Access Urgent Care507 S Main St, O Fallon, MO 63366 · Saint Charles CountyPhone(314) 961-2255
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Mary Withoelter is affiliated with 2 sites of care and 3 medical groups
Mary Withoelter's primary practice is Total Access Urgent Care in O Fallon, Missouri. The medical group on file is Total Access Urgent Care. Dmand AI also links Mary Withoelter to 2 more medical groups and 1 group practice or clinic, 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 Mary Withoelter's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mary Withoelter practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Total Access Urgent Care | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Mary Withoelter is one of 1,347 nurse practitioners in Missouri
Nurse practitioner is Mary Withoelter's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Mary Withoelter is licensed in Missouri.
Specialties and state licenses
- Nurse practitioner, MissouriPrimary
Nurse practitioners near Mary Withoelter
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 Withoelter treated 247 Medicare patients in 2024, average age 72
CMS counts 247 Medicare patients who saw Mary Withoelter in 2024. The largest group is 65 to 74, with 122 patients. 69% of them have high cholesterol, and 67% have high blood pressure. 8% are also on Medicaid. Their average risk score is 1.31, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mary Withoelter's median patient age at 49, with 60% women.
Mary Withoelter's Medicare patients by age, 2024
Mary Withoelter's Medicare patients by sex, 2024
- Women15764%
- Men9036%
Chronic conditions among Mary Withoelter's Medicare patients, 2024
- High cholesterol69%
- High blood pressure67%
- Arthritis48%
- Mood disorders33%
- Anxiety28%
- Depression28%
- Diabetes26%
- Chronic kidney disease24%
Share of Medicare patients with each condition. A patient can have several.
Mary Withoelter's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 49
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mary Withoelter wrote 373 Medicare Part D claims in 2024
In 2024, Mary Withoelter wrote 373 Medicare Part D claims for 217 patients. 95% of them were for generic drugs.
Mary Withoelter's Part D claims by kind of drug, 2024
- Generic356 claims95%
- Brand-name and other17 claims5%
Drug classes CMS tracks in Mary Withoelter's Part D claims, 2024
- Antibiotics38%143 of 373 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
Mary Withoelter scored 43 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 43 out of 100 for Mary Withoelter for performance year 2024, reported as part of a group. Mary Withoelter accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Mary Withoelter's MIPS scores, performance year 2024
- 43of 100Final score
- 31.9of 100Quality
- 0of 100Promoting Interoperability
- 40of 100Improvement Activities
- 61of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Mary Withoelter received $25 in industry payments in 2025
CMS Open Payments shows 1 general payment to Mary Withoelter from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $25.
Companies that paid Mary Withoelter 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 Withoelter'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)Clinician Public Reporting: Overall MIPS Performance (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 Withoelter
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 Withoelter's NPI number?
Mary Withoelter's NPI number is 1982188389. It was assigned on September 20, 2018, and it is active in the NPI Registry.
What does Mary Withoelter specialize in?
Mary Withoelter is a nurse practitioner in O Fallon, Missouri. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Mary Withoelter practice?
Mary Withoelter practices at 507 S Main St, O Fallon, MO 63366. Mary Withoelter's primary practice is Total Access Urgent Care in O Fallon, Missouri. Dmand AI also links Mary Withoelter to 2 medical groups and 1 group practice or clinic.
What is Mary Withoelter's office phone number?
The practice phone on file for Mary Withoelter is (314) 961-2255.
What is Mary Withoelter's medical license number?
Mary Withoelter holds Missouri license 2019033706.
What medical group is Mary Withoelter part of?
Mary Withoelter is linked to Total Access Urgent Care. Dmand AI links Mary Withoelter to 2 more medical groups.
Does Mary Withoelter accept Medicare?
Yes. CMS lists Mary Withoelter as accepting Medicare assignment.
What is Mary Withoelter's MIPS score?
Mary Withoelter's MIPS final score for performance year 2024 is 43 out of 100, reported as part of a group.
How many Medicare patients does Mary Withoelter see?
CMS counts 247 Medicare patients who saw Mary Withoelter in 2024, with an average age of 72.
Has Mary Withoelter received payments from drug or device companies?
CMS Open Payments shows $25 in general payments to Mary Withoelter from 1 company from 2025 to 2025. The largest total came from Pfizer Inc.
How long has Mary Withoelter been practicing?
Mary Withoelter graduated from medical school in 2018, 8 years ago.
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