Dr. Larrie Ann Williamson, MD
- Medicare services, 2019
- 195
- Part D claims, 2024
- 273
- Industry payments
- $66
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 1514 Doctor Care, Bossier City, LA 71111
- Practice phone
- Call (318) 549-3492
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
David Raines Community Health Centers - Bossier
FQHC - Main Site · Bossier City, Louisiana
Find Dr. Williamson'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. Larrie Ann Williamson is a psychiatrist in Bossier City, Louisiana
Dr. Williamson practices at David Raines Community Health Centers - Bossier in Bossier City, Louisiana.
Dr. Williamson's NPI, 1356319453, was assigned on March 14, 2006. Dr. Williamson graduated from Louisiana State University School of Medicine in Shreveport in 2001. Dr. Williamson holds Louisiana license MD.023926.
- NPI
- 1356319453NPI Registry (opens in a new tab)
- NPI enumeration date
- March 14, 2006
- NPI status
- Active
- Practice phone
- (318) 549-3492
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Larrie Ann Williamson practices at David Raines Community Health Centers - Bossier in Bossier City, Louisiana
Dr. Williamson's primary practice is David Raines Community Health Centers - Bossier, at 1514 Doctor Care, Bossier City, LA 71111 in Bossier Parish. The practice phone is (318) 549-3492.
- David Raines Community Health Centers - Bossier1514 Doctor Care, Bossier City, LA 71111 · Bossier ParishPhone(318) 549-3492
Source: Dmand AI Affiliation Data
Dr. Larrie Ann Williamson is affiliated with 2 sites of care and 2 medical groups
Dr. Williamson's primary practice is David Raines Community Health Centers - Bossier in Bossier City, Louisiana. The medical group on file is David Raines Community Health Centers. Dmand AI also links Dr. Williamson to 1 more group practice or clinic and 1 medical group, each named with a free account. Dr. Williamson's employer is on file too: a community health center (fqhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Larrie Ann Williamson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williamson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| David Raines Community Health Centers - Bossier | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Larrie Ann Williamson is one of 443 psychiatrists in Louisiana
Psychiatry is Dr. Williamson's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Williamson is licensed in Louisiana.
Specialties and state licenses
- Psychiatry, LouisianaPrimary
Psychiatrists near Dr. Williamson
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. Larrie Ann Williamson billed Medicare for 195 services in 2019
CMS data shows 195 Medicare services from Dr. Williamson across 4 procedure codes in 2019. Medicare paid $12,272 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Williamson's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 7482019: 19574%
Dr. Williamson compared with the Louisiana median for psychiatrists, 2019
- Dr. Williamson
- Louisiana median
- Medicare services
- 195vs 13347% above
- Part D claims
- 159vs 34854% below
Medians across 456 psychiatrists in Louisiana with Dmand AI profiles that report each measure.
Dr. Williamson's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Williamson and other psychiatrists in Louisiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Larrie Ann Williamson's patients have a median age of 37
Across all payers, Dmand AI patient panel data puts Dr. Williamson's median patient age at 37, with 63% women.
Dr. Williamson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 37
Patient panel by sex, all payers
- Women63%
- Men33%
Source: Dmand AI Patient Panel Data
Dr. Larrie Ann Williamson wrote 273 Medicare Part D claims in 2024
In 2024, Dr. Williamson wrote 273 Medicare Part D claims for 17 patients. 99% of them were for generic drugs. CMS names the drug for 159 of them, across 7 drugs with 11 or more claims each, at $1,708 in total drug cost. In 2023, CMS named 308 claims across 14 drugs.
Dr. Williamson's Part D claims by kind of drug, 2024
- Generic270 claims99%
- Brand-name and other3 claims1%
Dr. Williamson'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. Williamson's Part D claims, 2024
- Antipsychotics, patients 65 and over7%18 of 273 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: 3082024: 15948%
Drugs named by CMS: 7 in 2024, 14 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. Larrie Ann Williamson received $66 in industry payments from 2021 to 2025
CMS Open Payments shows 2 general payments to Dr. Williamson from 2 drug and device companies from 2021 to 2025. Education make up the largest share, 71% of the total. ITI, Inc. paid the most, $47.
General payments to Dr. Williamson by program year, 2021 to 2025
General payments to Dr. Williamson by kind, 2021 to 2025
- Education$4771%
- Food and beverage$1929%
Companies that paid Dr. Williamson the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Larrie Ann Williamson graduated from Louisiana State University School of Medicine in Shreveport
Dr. Williamson graduated from Louisiana State University School of Medicine in Shreveport in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Larrie Ann Williamson accepts plans from 6 insurance carriers
Dr. Williamson is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- HCSC
- Blue Cross and Blue Shield of Louisiana
- DE State Medicaid
- United Healthcare
Plan types Dr. Williamson accepts, by number of carriers
- Medicare3
- POS3
- PPO3
- HMO2
- EPO1
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Larrie Ann Williamson'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Larrie Ann Williamson
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. Larrie Ann Williamson's NPI number?
Dr. Larrie Ann Williamson's NPI number is 1356319453. It was assigned on March 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Larrie Ann Williamson?
Dr. Larrie Ann Williamson is a psychiatrist in Bossier City, Louisiana. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Larrie Ann Williamson practice?
Dr. Williamson practices at 1514 Doctor Care, Bossier City, LA 71111. Dr. Williamson's primary practice is David Raines Community Health Centers - Bossier in Bossier City, Louisiana. Dmand AI also links Dr. Williamson to 1 group practice or clinic and 1 medical group.
What is Dr. Larrie Ann Williamson's office phone number?
The practice phone on file for Dr. Williamson is (318) 549-3492.
What is Dr. Larrie Ann Williamson's medical license number?
Dr. Williamson holds Louisiana license MD.023926.
What medical group is Dr. Larrie Ann Williamson part of?
Dr. Williamson is linked to David Raines Community Health Centers. Dmand AI links Dr. Williamson to 1 more medical group.
Does Dr. Larrie Ann Williamson accept Medicare?
Yes. CMS data shows Dr. Williamson billed Medicare for 195 services in 2019.
What services does Dr. Larrie Ann Williamson bill to Medicare?
In 2019, Dr. Williamson's most billed Medicare services were hospital inpatient care (99231), hospital inpatient care (99232) and hospital inpatient care (99233).
Where did Dr. Larrie Ann Williamson go to medical school?
Dr. Williamson graduated from Louisiana State University School of Medicine in Shreveport in 2001.
What drugs does Dr. Larrie Ann Williamson prescribe most?
In 2024 Medicare Part D data, Dr. Williamson's most prescribed drugs by claims were Clonazepam, Trazodone HCl and Hydroxyzine Pamoate.
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Has Dr. Larrie Ann Williamson received payments from drug or device companies?
CMS Open Payments shows $66 in general payments to Dr. Williamson from 2 companies from 2021 to 2025. The largest total came from ITI, Inc.
How long has Dr. Larrie Ann Williamson been practicing?
Dr. Williamson graduated from medical school in 2001, 25 years ago.
What insurance does Dr. Larrie Ann Williamson accept?
Dr. Williamson is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
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