Mark Thomas May
- Hospital affiliations
- 2
- State license
- 1
- Year NPI issued
- 2025
- Practice address
- 700 West Avenue South, La Crosse, WI 54601
- Practice phone
- Call (608) 785-0940
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Mark May'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.
Mark Thomas May is an internist in La Crosse, Wisconsin
Mark May practices at Mayo Clinic Health System in La Crosse in La Crosse, Wisconsin, part of Mayo Clinic.
Mark May's NPI, 1003610981, was assigned on April 1, 2025. Mark May holds Minnesota license 35271.
- NPI
- 1003610981NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335653187
- NPI enumeration date
- April 1, 2025
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (608) 785-0940
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark Thomas May practices at Mayo Clinic Health System in La Crosse in La Crosse, Wisconsin
Mark May's primary practice is Mayo Clinic Health System in La Crosse, at 700 West Avenue South, La Crosse, WI 54601 in La Crosse County. The practice phone is (608) 785-0940.
- Mayo Clinic Health System in La Crosse700 West Avenue South, La Crosse, WI 54601 · La Crosse CountyPhone(608) 785-0940
Source: Dmand AI Affiliation Data
Mark Thomas May is affiliated with 2 sites of care
Mark May's primary practice is Mayo Clinic Health System in La Crosse in La Crosse, Wisconsin, part of Mayo Clinic. Mark May is also affiliated with Mayo Clinic Hospital, Saint Marys Campus.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mark Thomas May's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark May practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Health System in La Crosse | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark Thomas May is one of 1,675 internists in Wisconsin
Internal medicine is Mark May's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Mark May is licensed in Minnesota.
Specialties and state licenses
- Internal medicine, MinnesotaPrimary
Internists near Mark May
Counts of internists 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
Mark Thomas May's patients have a median age of 75
Across all payers, Dmand AI patient panel data puts Mark May's median patient age at 75, with 48% women.
Mark May's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women48%
- Men52%
Source: Dmand AI Patient Panel Data
How Mark Thomas May takes part in Medicare
Mark May 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)
Sources for Mark Thomas May'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) |
| 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 Mark Thomas May
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark Thomas May's NPI number?
Mark Thomas May's NPI number is 1003610981. It was assigned on April 1, 2025, and it is active in the NPI Registry.
What does Mark Thomas May specialize in?
Mark Thomas May is an internist in La Crosse, Wisconsin. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Mark Thomas May practice?
Mark May practices at 700 West Avenue South, La Crosse, WI 54601. Mark May's primary practice is Mayo Clinic Health System in La Crosse in La Crosse, Wisconsin, part of Mayo Clinic.
What is Mark Thomas May's office phone number?
The practice phone on file for Mark May is (608) 785-0940.
What is Mark Thomas May's medical license number?
Mark May holds Minnesota license 35271.
Which hospitals is Mark Thomas May affiliated with?
Mark May practices at Mayo Clinic Health System in La Crosse in La Crosse, Wisconsin. Mark May is also affiliated with Mayo Clinic Hospital, Saint Marys Campus.
Does Mark Thomas May accept Medicare?
Yes. CMS lists Mark May as accepting Medicare assignment.
How long has Mark Thomas May been practicing?
Mark May's NPI was assigned in 2025.
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