WILLIAM B LAWSON MD
NPI 1750499406
Psychiatry & Neurology - Addiction Psychiatry in Washington, DC
About William B Lawson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM B LAWSON MD (NPI 1750499406) is an individual addiction psychiatry provider in Washington, District Of Columbia, licensed in District Of Columbia (MD32707) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
William B Lawson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show William Lawson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Silver Spring, MD 20904
- Reassigned Medicare billing, District of Columbia enrollment
- 5 clinicians in this Medicare group
Del Valle, TX 78617
- Reassigned Medicare billing, Texas enrollment
- 294 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WASHINGTON, DC 20060
WASHINGTON, DC 20060
WASHINGTON, DC 20060
WASHINGTON, DC 20060
WASHINGTON, DC 20060
WASHINGTON, DC 20060
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Lawson's NPI number?
The NPI number for William Lawson is 1750499406. It was assigned to this individual provider in the NPPES registry on August 25, 2006.
Where is William Lawson located?
William Lawson practices at 2041 Georgia Ave NW, Washington, DC 20060. The listed phone number is (202) 865-6611.
What is William Lawson's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Addiction Psychiatry, with taxonomy code 2084P0802X.
Is William Lawson enrolled in Medicare?
Yes. William Lawson is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for William Lawson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Lawson reassigns Medicare benefits to 2 organizations: Mcfarland & Associates Inc. (Silver Spring, MD) and The University Of Texas At Austin (Del Valle, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Lawson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for William Lawson was last updated on August 22, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# William B Lawson, MD · NPI 1750499406
Addiction Psychiatry physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since August 25, 2006.
## Identity
- **NPI:** 1750499406 (Entity type: Individual)
- **Enumerated:** August 25, 2006
- **Primary specialty:** Psychiatry & Neurology - Addiction Psychiatry · taxonomy 2084P0802X
- **State license:** MD32707 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 2041 GEORGIA AVE NW, Washington, DC 20060-0001
- **Phone:** (202) 865-6611 · **Fax:** (202) 865-6212
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Mcfarland & Associates Inc. (NPI 1801393848, Silver Spring, MD); The University Of Texas At Austin (NPI 1245612225, Del Valle, TX) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 22, 2007
- **Other identifiers:** Medicare UPIN A98714; Medicare PIN 00B574H13; Medicaid 7118881 (VA)
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Source: [NPI Profile](https://npiprofile.com/npi/1750499406) · Data from the CMS NPPES public registry.