RYAN ALAN WILLIAMSON M.D.
NPI 1003234204
Psychiatry & Neurology - Neurology in Charlotte, NC
About Ryan Alan Williamson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RYAN ALAN WILLIAMSON M.D. (NPI 1003234204) is an individual neurology provider in Charlotte, North Carolina, licensed in North Carolina (2018-02818) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS, is affiliated with Billings Clinic, and maintains 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ryan Alan Williamson M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
10Medicare enrollment records show Ryan Williamson reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mountain City, TN 37683
- Reassigned Medicare billing, Tennessee enrollment
- Medicare enrollment name: Blue Ridge Medical Management Corporation
- 496 clinicians in this Medicare group
Dawsonville, GA 30534
- Reassigned Medicare billing, Georgia enrollment
- 466 clinicians in this Medicare group
Cookeville, TN 38501
- Reassigned Medicare billing, Tennessee enrollment
- 151 clinicians in this Medicare group
Norfolk, VA 23502
- Reassigned Medicare billing, North Carolina and Virginia enrollments
- 28 clinicians in this Medicare group
New Orleans, LA 70112
- Reassigned Medicare billing, Louisiana enrollment
- 295 clinicians in this Medicare group
Miles City, MT 59301
- Reassigned Medicare billing, Montana enrollment
- 1,264 clinicians in this Medicare group
Sandy, OR 97055
- Reassigned Medicare billing, Oregon enrollment
- 1,248 clinicians in this Medicare group
Gresham, OR 97030
- Reassigned Medicare billing, Oregon enrollment
- Medicare enrollment name: Kaiser Foundation Health Plan Of The Northwest
- 3,207 clinicians in this Medicare group
Molalla, OR 97038
- Reassigned Medicare billing, Oregon enrollment
- 568 clinicians in this Medicare group
Vancouver, WA 98686
- Reassigned Medicare billing, Washington enrollment
- 754 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.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Billings Clinic
Acute Care Hospitals · Billings, MTBenefis Hospitals Inc
Acute Care Hospitals · Great Falls, MTJohnson City Medical Center
Acute Care Hospitals · Johnson City, TNSagewest Health Care
Acute Care Hospitals · Riverton, WYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 28204 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
CHARLOTTE, NC 28204
CHARLOTTE, NC 28204
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 Ryan Williamson's NPI number?
The NPI number for Ryan Williamson is 1003234204. It was assigned to this individual provider in the NPPES registry on April 3, 2014.
Where is Ryan Williamson located?
Ryan Williamson practices at 200 Hawthorne Ln, Charlotte, NC 28204. The listed phone number is (704) 384-9437.
What is Ryan Williamson's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is Ryan Williamson enrolled in Medicare?
Yes. Ryan Williamson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ryan Williamson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Williamson reassigns Medicare benefits to 10 organizations: Blue Ridge Medical Management Corpoartion (Mountain City, TN), Northside Primary Care Professional Services, LLC (Dawsonville, GA), Cookeville Regional Medical Center (Cookeville, TN), Sentara Medical Group (Norfolk, VA), University Medical Center Management Corporation (New Orleans, LA) and 5 more organizations, listed in the Medicare section above. 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 Ryan Williamson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ryan Williamson accept?
Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP and Providence Health Plan list Ryan Williamson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Ryan Williamson affiliated with any hospitals?
According to CMS data, Ryan Williamson is affiliated with Billings Clinic, Benefis Hospitals Inc, Johnson City Medical Center and Sagewest Health Care.
When was this NPI record last updated?
The NPPES record for Ryan Williamson was last updated on January 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.
# Ryan Alan Williamson, M.D. · NPI 1003234204
Neurology physician in Charlotte, North Carolina. Individual provider, active in the CMS NPPES registry since April 3, 2014.
## Identity
- **NPI:** 1003234204 (Entity type: Individual)
- **Enumerated:** April 3, 2014
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **State license:** 2018-02818 (North Carolina)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 HAWTHORNE LN, Charlotte, NC 28204-2515
- **Phone:** (704) 384-9437
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 10 organizations under Medicare reassignment (form CMS-855R): Blue Ridge Medical Management Corpoartion (NPI 1770203754, Mountain City, TN); Northside Primary Care Professional Services, LLC (NPI 1215369715, Dawsonville, GA); Cookeville Regional Medical Center (NPI 1023397031, Cookeville, TN); Sentara Medical Group (NPI 1265485270, Norfolk, VA); University Medical Center Management Corporation (NPI 1083655567, New Orleans, LA); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Florida State University College Of Medicine, class of 2014
## Record status
- **NPPES last updated:** January 21, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1003234204) · Data from the CMS NPPES public registry.