NPPES file of Aug 9, 2026

Martha Arwen Karlstad, M.D.

Psychiatry Physician · Viroqua, WI

Martha Arwen Karlstad, M.D. is a psychiatry physician with a practice address in Viroqua, Wisconsin, and NPI 1457589954, issued on Jun 23, 2009. Check the license (Wisconsin 62165, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1457589954
Name
Martha Arwen Karlstad
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License numbers
62165 WI
LL31772 SC
Self-reported in NPPES; status is on the state search
Practice location
407 S Main St Ste 400, Viroqua, WI 54665
Phone
(608) 637-3174
Enumerated
Jun 23, 2009
Record last updated
May 30, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20140611002284); accepts Medicare assignment
Medical or professional school
University Of Nebraska College Of Medicine, 2009
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 407 S Main St Ste 400

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Bonnie Davidson, MDFamily Medicine Physician1568427375
  2. Phoebe DevittFamily Medicine Physician1336567932
  3. Debra Gallagher, APNPFamily Nurse Practitioner1629446737
  4. Roxane Holm, PMHNPPsychiatric/Mental Health Nurse Practitioner1598042145
  5. Rebecca Lyle, CNM, FNPNurse Practitioner1770063547

Verify Martha Arwen Karlstad in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 62165
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Wisconsin license search

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18% fewer Medicare Part D claims than the average psychiatry physician in 2024

820 Medicare Part D claims for 36 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.

  1. Martha Karlstad820
  2. Specialty average1,000

Most prescribed

  1. Clonazepam77 claims
  2. Lorazepam58 claims
  3. Escitalopram Oxalate56 claims
  4. Clonidine Hcl50 claims
  5. Gabapentin42 claims
  6. Sertraline Hcl37 claims

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.

Bills Medicare through one group practice

  1. Vernon Memorial Healthcare IncLa Farge, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

4 psychiatry physician records list a practice address in Viroqua

They are 4 of the 241 NPPES records with a practice address in Viroqua, and 929 psychiatry physician records in Wisconsin.

Other psychiatry physician records in Wisconsin

  1. Semhal Abbay, MDGreen Bay, WI1780713172
  2. Amir Abdelli, MDMilwaukee, WI1265782668
  3. Beth Abramson, M.D.Milwaukee, WI1922045996
  4. Jaeger Ackerman, MDMadison, WI1578192589
  5. Sean Ackerman, M.D.Columbus, WI1548559305
  6. Nagwa Agaiby, M.D.Milwaukee, WI1336240407
  7. Himanshu Agrawal, M.D.Elm Grove, WI1477747954
  8. Virginia Aguilar-Sincaban, MDMadison, WI1730172081
  9. Eileen Ahearn, M.D.Madison, WI1144320524
  10. Mahmoud Ahmed, MDLadysmith, WI1659473312

Common questions

What is Martha Arwen Karlstad, M.D.'s NPI number?

Martha Arwen Karlstad, M.D.'s National Provider Identifier (NPI) is 1457589954, issued on Jun 23, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Martha Arwen Karlstad, M.D. located?

The NPPES record lists a practice address at 407 S Main St Ste 400, Viroqua, WI, 54665. Phone: (608) 637-3174. Providers update this record themselves, so call before visiting.

How can I verify Martha Arwen Karlstad, M.D.'s license?

NPPES lists Wisconsin license number 62165, 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 Martha Arwen Karlstad, M.D. prescribe under Medicare Part D?

In 2024, Martha Arwen Karlstad, M.D. had 820 Medicare Part D claims for 36 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.