Mariah Lynn Mack, MD
Internal Medicine Physician · La Crosse, WI
Mariah Lynn Mack, MD is an internal medicine physician with a practice address in La Crosse, Wisconsin, and NPI 1992447692, issued on Apr 12, 2022. Check the license (Wisconsin 82534, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Mariah Lynn Mack
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 82534 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1836 South Ave, La Crosse, WI 54601
- Phone
- (608) 782-7300
- Enumerated
- Apr 12, 2022
- Record last updated
- Oct 4, 2024
- Medicare enrollment
- Enrolled (PECOS I20241016000242); accepts Medicare assignment
- Medical or professional school
- University Of North Dakota School Of Medicine, 2022
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 1836 South Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mariah Lynn Mack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 82534Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
20 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $127.43
1 payment: food and beverage; the largest payer was Janssen Biotech, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Gundersen Lutheran Medical Center IncOnalaska, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mariah Lynn Mack among 2,078 internal medicine physician records in Wisconsin
Mariah Lynn Mack, MD is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 89% of them.
- NPI issued2022 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2022 · median 2002 among the 1,098 with a school on file
- Record last updated2024 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
110 internal medicine physician records list a practice address in La Crosse
They are 110 of the 3,735 NPPES records with a practice address in La Crosse, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in La Crosse → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Christine Miller, MDLa Crosse, WI 546011366445934
- David Momont, MDLa Crosse, WI 546011649272964
- Sheila Momont, MDLa Crosse, WI 546011285636506
- Brian Mulrennan, MDLa Crosse, WI 546011073515391
- David Norenberg, MDLa Crosse, WI 546011235131517
- Steven Pearson, MDLa Crosse, WI 546011356343693
- Joan Romeyn, MDLa Crosse, WI 546011588667174
- Amanda Strosahl, MDLa Crosse, WI 546011063416857
Common questions
What is Mariah Lynn Mack, MD's NPI number?
Mariah Lynn Mack, MD's National Provider Identifier (NPI) is 1992447692, issued on Apr 12, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Mariah Lynn Mack, MD located?
The NPPES record lists a practice address at 1836 South Ave, La Crosse, WI, 54601. Phone: (608) 782-7300. Providers update this record themselves, so call before visiting.
How can I verify Mariah Lynn Mack, MD's license?
NPPES lists Wisconsin license number 82534, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mariah Lynn Mack, MD prescribe under Medicare Part D?
In 2024, Mariah Lynn Mack, MD had 20 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.