VA Nexus Letters for Cancer & Toxic Exposure
Oncology specialty nexus letters and independent medical opinions for veterans with cancer and toxic exposure — Agent Orange, burn pits, Camp Lejeune, and PACT Act claims — clarifying the medical connection to service when the VA needs it most.
Serving Veterans of Every Branch
U.S. Army
U.S. Marine Corps
U.S. Navy
U.S. Air Force
U.S. Coast Guard
U.S. Space Force
About Dr. CM Williams
A former enlisted Soldier, retired Army Lieutenant Colonel, and board-certified Radiation Oncologist, Dr. Williams understands both the realities of military service and the medical complexity behind cancer, toxic exposure, and service-related claims.
Physician-Led Services
Each service begins with a focused consult so the right level of review is matched to your case — never a one-size-fits-all process.
Physician review of up to 75 pages of records, detailed medical analysis, draft preparation, a virtual draft review, and a final signed Nexus letter when medically appropriate.
The most comprehensive review — includes the Nexus opinion, plus a full claims-file review of up to 100 pages, a response to an unfavorable C&P exam, and analysis of causation and severity. Built for denied, appealed, and complex cases.
A physician-led review of up to 25 pages evaluating whether your records appear medically complete for VA claim readiness, with a concise 1–2 page summary.
Dependency and Indemnity Compensation (DIC) review to help clarify whether a veteran’s cancer-related death was connected to service, with telehealth where medically appropriate in licensed states.
Exposure & Condition Guides
Plain-language guides to the toxic exposures and cancers Dr. Williams reviews — and how a specialty nexus opinion fits into a VA claim.
Toxic Exposure
Cancers and conditions linked to herbicide exposure during the Vietnam era, and how a specialty nexus opinion supports your claim.
Read the guideToxic Exposure
PACT Act presumptive cancers from burn pits and airborne hazards in Iraq, Afghanistan and the Gulf, reviewed by an oncologist.
Read the guideToxic Exposure
Mesothelioma and lung cancer from asbestos in shipyards, vehicles and older facilities, supported with a specialty medical opinion.
Read the guideToxic Exposure
Cancers linked to PFAS 'forever chemicals' from firefighting foam and contaminated base water, where a nexus opinion matters most.
Read the guideToxic Exposure
Cancers tied to contaminated drinking water at Camp Lejeune (1953-1987), reviewed by an oncologist for VA and related claims.
Read the guideWomen Veterans
Gender-specific cancers and overlooked exposures for women veterans, reviewed with the depth they deserve.
Read the guideHow It Works
A focused 40-minute consultation to review your diagnosis, service history, and medical timeline — and determine whether a full physician review is medically appropriate.
Dr. Williams reviews your relevant records, exposure history, and the medical literature to assess whether a supportable connection to service exists.
When the evidence reasonably supports a connection, you receive a final, signed Nexus letter or Independent Medical Opinion ready for your claim.
What People Think
Frequently Asked Questions
A Nexus Letter is a document written by a medical professional that explains whether there is a medically supportable connection between a current health condition and military service. It may help clarify service connection in complex cases such as toxic exposures, secondary conditions, cancer-related claims, or DIC review.
It is the first step — a focused 40-minute consultation to discuss your diagnosis, service history, medical timeline, and concerns, and to help determine whether your case appears medically appropriate for a comprehensive nexus opinion review.
No. The consult helps determine whether a nexus opinion may be medically supportable. A formal opinion is only provided when the medical evidence reasonably supports a connection between your condition and military service.
The Comprehensive Nexus Opinion is $2,400 and includes physician review of up to 75 pages of records, detailed medical analysis, draft preparation, a 10–15 minute virtual draft review, and final signed opinion delivery when medically appropriate. It is paid in three non-refundable stages. An Independent Medical Opinion (IMO) is $3,200 — the most comprehensive option, which includes the Nexus opinion plus a full claims-file review of up to 100 pages, a response to an unfavorable C&P exam, and analysis of causation and severity for denied, appealed, or complex cases. Records beyond the included page limit are reviewed at $150 per additional 20 pages. DIC support is priced case-by-case.
Estimated turnaround is approximately 3 weeks from the date all required records, forms, and payments are received. This may vary depending on record volume, case complexity, and response time for requested information.
A prior denial does not automatically mean the case cannot be reviewed. In some situations, a more focused medical analysis may help clarify the medical issues involved. Each case is assessed individually.
No. Veterans may submit a request independently. Dr. Williams also works with VA-credentialed representatives to assist veterans with specialty Nexus letters.
Get in Touch
Send us a message and we’ll get back to you. If you’re ready to begin, you can also schedule a consult directly.