Leonne Tanis, CNM, WHNP
- Hospital affiliations
- 1
- Industry payments
- $13
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2022
- Practice address
- 900 23rd St NW, Washington, DC 20037
- Practice phone
- Call (202) 716-4605
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Leonne Tanis' 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.
Leonne Tanis is an advanced practice midwife in Washington, District of Columbia
Leonne Tanis practices at The George Washington University Hospital in Washington, District of Columbia, part of Universal Health Services.
Leonne Tanis' NPI, 1356086375, was assigned on May 3, 2022. Leonne Tanis holds New York license F002225.
- NPI
- 1356086375NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7113308693
- NPI enumeration date
- May 3, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (202) 716-4605
- 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)
Leonne Tanis practices at The George Washington University Hospital in Washington, District of Columbia
Leonne Tanis' primary practice is The George Washington University Hospital, at 900 23rd St NW, Washington, DC 20037 in The District County. The practice phone is (202) 716-4605.
- The George Washington University Hospital900 23rd St NW, Washington, DC 20037 · The District CountyPhone(202) 716-4605
Source: Dmand AI Affiliation Data
Leonne Tanis is affiliated with 1 site of care and 1 medical group
Leonne Tanis' primary practice is The George Washington University Hospital in Washington, District of Columbia, part of Universal Health Services. The medical group on file is Ob Hospitalist Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Leonne Tanis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Leonne Tanis practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The George Washington University Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Leonne Tanis is one of 45 advanced practice midwifes in District of Columbia
Advanced practice midwife is Leonne Tanis' primary specialty in the NPI Registry, under taxonomy code 367A00000X. Leonne Tanis is licensed in New York.
Specialties and state licenses
- Advanced practice midwife, New YorkPrimary
Advanced practice midwifes near Leonne Tanis
Counts of advanced practice midwifes 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
Leonne Tanis' patients have a median age of 34
Across all payers, Dmand AI patient panel data puts Leonne Tanis' median patient age at 34, with 98% women.
Leonne Tanis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 34
Patient panel by sex, all payers
- Women98%
- Men0%
Source: Dmand AI Patient Panel Data
How Leonne Tanis takes part in Medicare
Leonne Tanis 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)
Leonne Tanis received $13 in industry payments in 2025
CMS Open Payments shows 1 general payment to Leonne Tanis from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Organon LLC paid the most, $13.
Companies that paid Leonne Tanis 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 Leonne Tanis'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 Data |
| 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 Leonne Tanis
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Leonne Tanis' NPI number?
Leonne Tanis' NPI number is 1356086375. It was assigned on May 3, 2022, and it is active in the NPI Registry.
What does Leonne Tanis specialize in?
Leonne Tanis is an advanced practice midwife in Washington, District of Columbia. The primary specialty in the NPI Registry is Advanced Practice Midwife (taxonomy code 367A00000X).
Where does Leonne Tanis practice?
Leonne Tanis practices at 900 23rd St NW, Washington, DC 20037. Leonne Tanis' primary practice is The George Washington University Hospital in Washington, District of Columbia, part of Universal Health Services.
What is Leonne Tanis' office phone number?
The practice phone on file for Leonne Tanis is (202) 716-4605.
What is Leonne Tanis' medical license number?
Leonne Tanis holds New York license F002225.
Which hospitals is Leonne Tanis affiliated with?
Leonne Tanis practices at The George Washington University Hospital in Washington, District of Columbia.
What medical group is Leonne Tanis part of?
Leonne Tanis is linked to Ob Hospitalist Group.
Does Leonne Tanis accept Medicare?
Yes. CMS lists Leonne Tanis as accepting Medicare assignment.
Has Leonne Tanis received payments from drug or device companies?
CMS Open Payments shows $13 in general payments to Leonne Tanis from 1 company from 2025 to 2025. The largest total came from Organon LLC.
How long has Leonne Tanis been practicing?
Leonne Tanis graduated from medical school in 2021, 5 years ago.
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