Dr. Claud Lawrence Horn, MD
- Part D claims, 2024
- 880
- Hospital affiliations
- 1
- Industry payments
- $762
- State licenses
- 2
- Year NPI issued
- 2007
- Practice address
- 900 23rd St NW, Washington, DC 20037
- Practice phone
- Call (202) 716-4605
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Horn'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. Claud Lawrence Horn is a psychiatrist in Washington, District of Columbia
Dr. Horn practices at The George Washington University Hospital in Washington, District of Columbia, part of Universal Health Services.
Dr. Horn's NPI, 1396872693, was assigned on February 27, 2007. Dr. Horn holds Maryland license D0056828.
- NPI
- 1396872693NPI Registry (opens in a new tab)
- NPI enumeration date
- February 27, 2007
- NPI status
- Active
- Practice phone
- (202) 716-4605
- 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. Claud Lawrence Horn practices at The George Washington University Hospital in Washington, District of Columbia
Dr. Horn's primary practice is The George Washington University Hospital, at 900 23rd St NW, Washington, DC 20037 in The District County. The practice phone is (202) 716-4605.
- The George Washington University Hospital900 23rd St NW, Washington, DC 20037 · The District CountyPhone(202) 716-4605
Source: Dmand AI Affiliation Data
Dr. Claud Lawrence Horn is affiliated with 1 site of care
Dr. Horn's primary practice is The George Washington University Hospital in Washington, District of Columbia, part of Universal Health Services.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Claud Lawrence Horn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Horn practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The George Washington University Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Claud Lawrence Horn is one of 220 psychiatrists in District of Columbia
Psychiatry is Dr. Horn's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dmand AI has Dr. Horn's licenses on file in 2 states: Maryland and Virginia.
Specialties and state licenses
- Psychiatry, MarylandPrimary
- Virginia license
Psychiatrists near Dr. Horn
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. Claud Lawrence Horn's patients have a median age of 59
Across all payers, Dmand AI patient panel data puts Dr. Horn's median patient age at 59, with 40% women.
Dr. Horn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. Claud Lawrence Horn wrote 880 Medicare Part D claims in 2024
In 2024, Dr. Horn wrote 880 Medicare Part D claims for 57 patients. 91% of them were for generic drugs. CMS names the drug for 738 of them, across 29 drugs with 11 or more claims each, at $50,230 in total drug cost. In 2023, CMS named 605 claims across 25 drugs.
Dr. Horn's Part D claims by kind of drug, 2024
- Generic802 claims91%
- Brand-name78 claims9%
Dr. Horn'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. Horn's Part D claims, 2024
- Antipsychotics, patients 65 and over9%75 of 880 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: 6052024: 73822%
Drugs named by CMS: 29 in 2024, 25 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
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Dr. Claud Lawrence Horn received $762 in industry payments from 2018 to 2025
CMS Open Payments shows 54 general payments to Dr. Horn from 9 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $403.
General payments to Dr. Horn by program year, 2018 to 2025
Companies that paid Dr. Horn the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Claud Lawrence Horn'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. Claud Lawrence Horn
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. Claud Lawrence Horn's NPI number?
Dr. Claud Lawrence Horn's NPI number is 1396872693. It was assigned on February 27, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Claud Lawrence Horn?
Dr. Claud Lawrence Horn is a psychiatrist in Washington, District of Columbia. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Claud Lawrence Horn practice?
Dr. Horn practices at 900 23rd St NW, Washington, DC 20037. Dr. Horn's primary practice is The George Washington University Hospital in Washington, District of Columbia, part of Universal Health Services.
What is Dr. Claud Lawrence Horn's office phone number?
The practice phone on file for Dr. Horn is (202) 716-4605.
What is Dr. Claud Lawrence Horn's medical license number?
Dr. Horn holds Maryland license D0056828, one of the licenses on file in 2 states.
Which states has Dr. Claud Lawrence Horn been licensed in?
Dmand AI has state licenses on file for Dr. Horn in Maryland and Virginia.
Which hospitals is Dr. Claud Lawrence Horn affiliated with?
Dr. Horn practices at The George Washington University Hospital in Washington, District of Columbia.
What drugs does Dr. Claud Lawrence Horn prescribe most?
In 2024 Medicare Part D data, Dr. Horn's most prescribed drugs by claims were Lorazepam, Bupropion XL and Lamotrigine.
Has Dr. Claud Lawrence Horn received payments from drug or device companies?
CMS Open Payments shows $762 in general payments to Dr. Horn from 9 companies from 2018 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Claud Lawrence Horn been practicing?
Dr. Horn's NPI was assigned in 2007.
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