Ryan Williamson, M.D.
Ryan Williamson, M.D. is a Neurology Physician in Charlotte, NC, registered under NPI 1003234204.
Getting there
Here is what surrounds this office in Charlotte, based on OpenStreetMap data collected Aug 30, 2026. Parking is available about 373 ft away. There is EV charging 0.45 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 0.35 mi away, served by 7th Street & Clement Avenue. A pharmacy sits 0.41 mi from the entrance (Queen's Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.49 mi away.
Getting here and what is nearby
Parking 295 ft ~2 min
Parking 344 ft ~2 min
Parking 373 ft ~2 min
Restaurant Viva Chicken 454 ft ~2 min
Restaurant Novant Health Cafeteria 472 ft ~2 min
Restaurant Papa John's 597 ft ~3 min
1620 East 4th Street, Charlotte 28204
09:30-01:00
Pharmacy Walgreens 0.24 mi ~5 min
Transit 7th Street & Hawthorne Ln. 0.30 mi ~7 min
Transit 7th Street & Armory Drive 0.34 mi ~7 min
Transit 7th Street & Clement Avenue 0.35 mi ~8 min
Gas station Marathon 0.36 mi ~8 min
Convenience Circle K 0.37 mi ~8 min
Pharmacy Queen's Pharmacy 0.41 mi ~9 min
Coffee Starbucks 0.43 mi ~9 min
Convenience Friendly Mart 0.44 mi ~9 min
EV charging 0.45 mi ~9 min
Coffee Summit Coffee 0.49 mi ~10 min
Convenience Cherry Market 0.49 mi ~10 min
603 Baldwin Avenue, Charlotte 28204
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 0101264099 | VA | Neurology Physician |
| MD213220 | OR | Neurology Physician |
| MD61581286 | WA | Neurology Physician |
| 102610 | GA | Neurology Physician |
| 2018-02818 | NC | Neurology Physician primary |
Licences are recorded in 5 states: VA, OR, WA, GA, NC. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Neurology
- PAC ID
- 9133458581
Enrolled in Medicare 8 times, across 8 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| North Carolina | I20190910001602 | Practitioner - Neurology |
| Virginia | I20200114002081 | Practitioner - Neurology |
| Tennessee | I20221104002659 | Practitioner - Neurology |
| Oregon | I20230123000079 | Practitioner - Neurology |
| Montana | I20240209000978 | Practitioner - Neurology |
| Washington | I20240805003633 | Practitioner - Neurology |
| Georgia | I20250204002365 | Practitioner - Neurology |
| Louisiana | I20250623004091 | Practitioner - Neurology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Neurology. There are 8 separate enrolment records across 8 states (NC, VA, TN, OR, MT, WA, GA, LA). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 5 states
This provider holds licences in 5 states: Georgia, North Carolina, Oregon, Virginia and Washington. The practice address on file is in Charlotte, NC, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- 2018-02818
- Specialty
- Neurology Physician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Neurology covers
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures. NUCC Health Care Provider Taxonomy, code 2084N0400X
All registered taxonomy codes
This provider registers 5 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2084N0400X | Neurology Physician Neurology | 0101264099 | VA | |
| 2084N0400X | Neurology Physician Neurology | MD213220 | OR | |
| 2084N0400X | Neurology Physician Neurology | MD61581286 | WA | |
| 2084N0400X | Neurology Physician Neurology | 102610 | GA | |
| 2084N0400X | Neurology Physician Neurology | 2018-02818 | NC | primary |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003234204 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 3, 2014 |
| Last updated | Jan 21, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | M.D. |
| Practice address |
200 HAWTHORNE LN Charlotte, NC 28204 (704) 384-9437 |
| Mailing address |
100 BREWSTER BLVD Camp Lejeune, NC 28547 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 2 | 3 | 4 | 2 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 3 | 8 | 2 | 0 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.