Maddisson Ann Haslett, NP
- Medicare patients, 2024
- 55
- Part D claims, 2024
- 11
- Hospital affiliations
- 2
- Industry payments
- $146
- Medical group
- 1
- Practice address
- 12639 Old Tesson Road, Suite 130, Saint Louis, MO 63128
- Practice phone
- Call (314) 748-4225
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Old Tesson Surgery Center
Surgery Center - Medicare-Certified · Saint Louis, Missouri
Find Maddisson Haslett'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.
Maddisson Ann Haslett is a gerontology nurse practitioner in Saint Louis, Missouri
Maddisson Haslett practices at Old Tesson Surgery Center in Saint Louis, Missouri.
Maddisson Haslett's NPI, 1700524618, was assigned on May 23, 2022. Maddisson Haslett holds Missouri license 2022017958.
- NPI
- 1700524618NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416335419
- NPI enumeration date
- May 23, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 748-4225
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Maddisson Ann Haslett practices at Old Tesson Surgery Center in Saint Louis, Missouri
Maddisson Haslett's primary practice is Old Tesson Surgery Center, at 12639 Old Tesson Road, Suite 130, Saint Louis, MO 63128. The practice phone is (314) 748-4225.
- Old Tesson Surgery Center12639 Old Tesson Road, Suite 130, Saint Louis, MO 63128Phone(314) 748-4225
Source: Dmand AI Affiliation Data
Maddisson Ann Haslett is affiliated with 4 sites of care and 1 medical group
Maddisson Haslett's primary practice is Old Tesson Surgery Center in Saint Louis, Missouri. Maddisson Haslett is also affiliated with Mercy Hospital South. The medical group on file is Signature Medical Group. Dmand AI also links Maddisson Haslett to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Maddisson Ann Haslett's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Maddisson Haslett practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Old Tesson Surgery Center | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Maddisson Ann Haslett is one of 184 gerontology nurse practitioners in Missouri
Gerontology is Maddisson Haslett's primary specialty in the NPI Registry, under taxonomy code 363LG0600X. Dmand AI has Maddisson Haslett's licenses on file in 2 states: Missouri and Illinois.
Specialties and state licenses
- Gerontology nurse practitioner, MissouriPrimary
- Illinois license
Gerontology nurse practitioners near Maddisson Haslett
Counts of gerontology 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
Maddisson Ann Haslett treated 55 Medicare patients in 2024, average age 75
CMS counts 55 Medicare patients who saw Maddisson Haslett in 2024. The largest group is 65 to 74, with 27 patients. 75% of them have arthritis, and 71% have high blood pressure. Their average risk score is 0.88, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Maddisson Haslett's median patient age at 65, with 56% women.
Maddisson Haslett's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Maddisson Haslett's Medicare patients by sex, 2024
- Women3869%
- Men1731%
Chronic conditions among Maddisson Haslett's Medicare patients, 2024
- Arthritis75%
- High blood pressure71%
- High cholesterol65%
- Mood disorders31%
- Depression25%
- Anxiety24%
Share of Medicare patients with each condition. A patient can have several.
Maddisson Haslett's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Maddisson Ann Haslett wrote 11 Medicare Part D claims in 2024
In 2024, Maddisson Haslett wrote 11 Medicare Part D claims. 100% of them were for generic drugs.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Maddisson Ann Haslett takes part in Medicare
Maddisson Haslett 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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Maddisson Ann Haslett received $146 in industry payments in 2025
CMS Open Payments shows 1 general payment to Maddisson Haslett from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Endo USA, Inc. paid the most, $146.
Companies that paid Maddisson Haslett 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 Maddisson Ann Haslett'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 Maddisson Ann Haslett
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Maddisson Ann Haslett's NPI number?
Maddisson Ann Haslett's NPI number is 1700524618. It was assigned on May 23, 2022, and it is active in the NPI Registry.
What does Maddisson Ann Haslett specialize in?
Maddisson Ann Haslett is a gerontology nurse practitioner in Saint Louis, Missouri. The primary specialty in the NPI Registry is Gerontology Nurse Practitioner (taxonomy code 363LG0600X).
Where does Maddisson Ann Haslett practice?
Maddisson Haslett practices at 12639 Old Tesson Road, Suite 130, Saint Louis, MO 63128. Maddisson Haslett's primary practice is Old Tesson Surgery Center in Saint Louis, Missouri. Dmand AI also links Maddisson Haslett to 1 hospital and 1 group practice or clinic.
What is Maddisson Ann Haslett's office phone number?
The practice phone on file for Maddisson Haslett is (314) 748-4225.
What is Maddisson Ann Haslett's medical license number?
Maddisson Haslett holds Missouri license 2022017958, one of the licenses on file in 2 states.
Which states has Maddisson Ann Haslett been licensed in?
Dmand AI has state licenses on file for Maddisson Haslett in Missouri and Illinois.
Which hospitals is Maddisson Ann Haslett affiliated with?
Maddisson Haslett is affiliated with Mercy Hospital South. Dmand AI links Maddisson Haslett to 1 more hospital.
What medical group is Maddisson Ann Haslett part of?
Maddisson Haslett is linked to Signature Medical Group.
Does Maddisson Ann Haslett accept Medicare?
Yes. CMS lists Maddisson Haslett as accepting Medicare assignment.
How many Medicare patients does Maddisson Ann Haslett see?
CMS counts 55 Medicare patients who saw Maddisson Haslett in 2024, with an average age of 75.
Has Maddisson Ann Haslett received payments from drug or device companies?
CMS Open Payments shows $146 in general payments to Maddisson Haslett from 1 company from 2025 to 2025. The largest total came from Endo USA, Inc.
How long has Maddisson Ann Haslett been practicing?
Maddisson Haslett graduated from medical school in 2021, 5 years ago.
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