Dr. Martha Arwen Karlstad, MD
- Part D claims, 2024
- 820
- Hospital affiliations
- 1
- Industry payments
- $56
- Medical group
- 1
- State licenses
- 2
- Practice address
- 407 S Main St Ste 400, Viroqua, WI 54665
- Practice phone
- Call (608) 637-3174
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Vernon Health - Viroqua Clinic
Rural Health Clinic - Hospital-Owned · Viroqua, Wisconsin
Find Dr. Karlstad'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.
Dr. Martha Arwen Karlstad is a psychiatrist in Viroqua, Wisconsin
Dr. Karlstad practices at Vernon Health - Viroqua Clinic in Viroqua, Wisconsin.
Dr. Karlstad's NPI, 1457589954, was assigned on June 23, 2009. Dr. Karlstad graduated from University of Nebraska College of Medicine in 2009. Dr. Karlstad holds Wisconsin license 62165.
- NPI
- 1457589954NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264656396
- NPI enumeration date
- June 23, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (608) 637-3174
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Martha Arwen Karlstad practices at Vernon Health - Viroqua Clinic in Viroqua, Wisconsin
Dr. Karlstad's primary practice is Vernon Health - Viroqua Clinic, at 407 S Main St Ste 400, Viroqua, WI 54665. The practice phone is (608) 637-3174.
- Vernon Health - Viroqua Clinic407 S Main St Ste 400, Viroqua, WI 54665Phone(608) 637-3174
Source: Dmand AI Affiliation Data
Dr. Martha Arwen Karlstad is affiliated with 2 sites of care and 1 medical group
Dr. Karlstad's primary practice is Vernon Health - Viroqua Clinic in Viroqua, Wisconsin. Dr. Karlstad is also affiliated with Vernon Health Hospital. The medical group on file is Hirsch Clinic - VMH. Dr. Karlstad's employer is on file too: a rural health clinic (rhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Martha Arwen Karlstad's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Karlstad practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vernon Health - Viroqua Clinic | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Martha Arwen Karlstad is one of 688 psychiatrists in Wisconsin
Psychiatry is Dr. Karlstad's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dmand AI has Dr. Karlstad's licenses on file in 2 states: Wisconsin and South Carolina.
Specialties and state licenses
- Psychiatry, WisconsinPrimary
- South Carolina license
Psychiatrists near Dr. Karlstad
Counts of psychiatrists 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
Dr. Martha Arwen Karlstad's patients have a median age of 18
Across all payers, Dmand AI patient panel data puts Dr. Karlstad's median patient age at 18, with 49% women.
Dr. Karlstad's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 18
Patient panel by sex, all payers
- Women49%
- Men51%
Source: Dmand AI Patient Panel Data
Dr. Martha Arwen Karlstad wrote 820 Medicare Part D claims in 2024
In 2024, Dr. Karlstad wrote 820 Medicare Part D claims for 36 patients. 97% of them were for generic drugs. CMS names the drug for 737 of them, across 31 drugs with 11 or more claims each, at $30,126 in total drug cost. In 2023, CMS named 720 claims across 28 drugs.
Dr. Karlstad's Part D claims by kind of drug, 2024
- Generic795 claims97%
- Brand-name25 claims3%
Dr. Karlstad's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Karlstad's Part D claims, 2024
- Antipsychotics, patients 65 and over5%38 of 820 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7202024: 7372%
Drugs named by CMS: 31 in 2024, 28 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Martha Arwen Karlstad takes part in Medicare
Dr. Karlstad 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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Dr. Martha Arwen Karlstad received $56 in industry payments in 2016
CMS Open Payments shows 4 general payments to Dr. Karlstad from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $56.
Companies that paid Dr. Karlstad the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Martha Arwen Karlstad graduated from University of Nebraska College of Medicine
Dr. Karlstad graduated from University of Nebraska College of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Martha Arwen Karlstad'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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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 Dr. Martha Arwen Karlstad
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Martha Arwen Karlstad's NPI number?
Dr. Martha Arwen Karlstad's NPI number is 1457589954. It was assigned on June 23, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Martha Arwen Karlstad?
Dr. Martha Arwen Karlstad is a psychiatrist in Viroqua, Wisconsin. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Martha Arwen Karlstad practice?
Dr. Karlstad practices at 407 S Main St Ste 400, Viroqua, WI 54665. Dr. Karlstad's primary practice is Vernon Health - Viroqua Clinic in Viroqua, Wisconsin.
What is Dr. Martha Arwen Karlstad's office phone number?
The practice phone on file for Dr. Karlstad is (608) 637-3174.
What is Dr. Martha Arwen Karlstad's medical license number?
Dr. Karlstad holds Wisconsin license 62165, one of the licenses on file in 2 states.
Which states has Dr. Martha Arwen Karlstad been licensed in?
Dmand AI has state licenses on file for Dr. Karlstad in Wisconsin and South Carolina.
Which hospitals is Dr. Martha Arwen Karlstad affiliated with?
Dr. Karlstad is affiliated with Vernon Health Hospital.
What medical group is Dr. Martha Arwen Karlstad part of?
Dr. Karlstad is linked to Hirsch Clinic - VMH.
Does Dr. Martha Arwen Karlstad accept Medicare?
Yes. CMS lists Dr. Karlstad as accepting Medicare assignment.
Where did Dr. Martha Arwen Karlstad go to medical school?
Dr. Karlstad graduated from University of Nebraska College of Medicine in 2009.
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What drugs does Dr. Martha Arwen Karlstad prescribe most?
In 2024 Medicare Part D data, Dr. Karlstad's most prescribed drugs by claims were Clonazepam, Lorazepam and Escitalopram Oxalate.
Has Dr. Martha Arwen Karlstad received payments from drug or device companies?
CMS Open Payments shows $56 in general payments to Dr. Karlstad from 1 company from 2016 to 2016. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Martha Arwen Karlstad been practicing?
Dr. Karlstad graduated from medical school in 2009, 17 years ago.
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