Dr. Karl W. Northwall, MD
- Part D claims, 2024
- 13
- Hospital affiliations
- 1
- Industry payments
- $256
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 5525 Catawba Hospital Drive, Catawba, VA 24070
- Practice phone
- Call (540) 375-4200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Northwall'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. Karl W. Northwall is a psychiatrist in Catawba, Virginia
Dr. Northwall practices at Catawba Hospital in Catawba, Virginia, part of Commonwealth of Virginia.
Dr. Northwall's NPI, 1346264942, was assigned on July 27, 2006. Dr. Northwall holds Virginia license 0101240272.
- NPI
- 1346264942NPI Registry (opens in a new tab)
- NPI enumeration date
- July 27, 2006
- NPI status
- Active
- Practice phone
- (540) 375-4200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Karl W. Northwall practices at Catawba Hospital in Catawba, Virginia
Dr. Northwall's primary practice is Catawba Hospital, at 5525 Catawba Hospital Drive, Catawba, VA 24070 in Roanoke County. The practice phone is (540) 375-4200.
- Catawba Hospital5525 Catawba Hospital Drive, Catawba, VA 24070 · Roanoke CountyPhone(540) 375-4200
Source: Dmand AI Affiliation Data
Dr. Karl W. Northwall is affiliated with 1 site of care
Dr. Northwall's primary practice is Catawba Hospital in Catawba, Virginia, part of Commonwealth of Virginia.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Karl W. Northwall's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Northwall practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Catawba Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Karl W. Northwall is one of 1,014 psychiatrists in Virginia
Psychiatry is Dr. Northwall's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Northwall is licensed in Virginia.
Specialties and state licenses
- Psychiatry, VirginiaPrimary
Psychiatrists near Dr. Northwall
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. Karl W. Northwall's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Northwall's median patient age at 73, with 43% women.
Dr. Northwall's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women43%
- Men57%
Source: Dmand AI Patient Panel Data
Dr. Karl W. Northwall wrote 13 Medicare Part D claims in 2024
In 2024, Dr. Northwall wrote 13 Medicare Part D claims. 85% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $872 in total drug cost. In 2020, CMS named 597 claims across 24 drugs.
Dr. Northwall's Part D claims by kind of drug, 2024
- Generic11 claims85%
- Brand-name and other2 claims15%
Dr. Northwall's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 5972021: 1298%
Drugs named by CMS: 1 in 2021, 24 in 2020.
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
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Dr. Karl W. Northwall received $256 in industry payments from 2016 to 2017
CMS Open Payments shows 3 general payments to Dr. Northwall from 3 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Sunovion Pharmaceuticals Inc. paid the most, $119.
General payments to Dr. Northwall by program year, 2016 to 2017
Companies that paid Dr. Northwall the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Karl W. Northwall'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) |
| 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 Dr. Karl W. Northwall
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. Karl W. Northwall's NPI number?
Dr. Karl W. Northwall's NPI number is 1346264942. It was assigned on July 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Karl W. Northwall?
Dr. Karl W. Northwall is a psychiatrist in Catawba, Virginia. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Karl W. Northwall practice?
Dr. Northwall practices at 5525 Catawba Hospital Drive, Catawba, VA 24070. Dr. Northwall's primary practice is Catawba Hospital in Catawba, Virginia, part of Commonwealth of Virginia.
What is Dr. Karl W. Northwall's office phone number?
The practice phone on file for Dr. Northwall is (540) 375-4200.
What is Dr. Karl W. Northwall's medical license number?
Dr. Northwall holds Virginia license 0101240272.
Which hospitals is Dr. Karl W. Northwall affiliated with?
Dr. Northwall practices at Catawba Hospital in Catawba, Virginia.
What drugs does Dr. Karl W. Northwall prescribe most?
In 2021 Medicare Part D data, Dr. Northwall's most prescribed drugs by claims were Chlorpromazine HCl.
Has Dr. Karl W. Northwall received payments from drug or device companies?
CMS Open Payments shows $256 in general payments to Dr. Northwall from 3 companies from 2016 to 2017. The largest total came from Sunovion Pharmaceuticals Inc.
How long has Dr. Karl W. Northwall been practicing?
Dr. Northwall's NPI was assigned in 2006.
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