Charles Williams, PH.D.
Charles Williams, PH.D. is a Psychologist in Nashville, TN, registered under NPI 1003226986. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Nashville, based on OpenStreetMap data collected Sep 12, 2026. Parking is available about 215 ft away. There is EV charging 0.42 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 0.22 mi away, served by 21ST AVE N & CHURCH ST SB. If you arrive early, there is a coffee shop 0.48 mi away.
Getting here and what is nearby
Parking 191 ft ~1 min
Parking 201 ft ~1 min
Parking 215 ft ~1 min
Restaurant Nama 329 ft ~2 min
2300 Elliston Place, Nashville 37203
Restaurant Dunkin' Donuts 420 ft ~2 min
2310 Elliston Place, Nashville 37203
Mo-Fr 05:00-17:00; Sa-Su 06:00-17:00
Restaurant Jamba 495 ft ~2 min
2314 Elliston Place, Nashville 37203
Hotel Hampton Inn & Suites Nashville - Vanderbilt - Elliston Place 585 ft ~3 min
Transit WEST END AVE & 23RD AVE S WB 873 ft ~4 min
Transit WEST END AVE & 23RD AVE S EB 944 ft ~4 min
Hotel Homewood Suites by Hilton Nashville Vanderbilt 0.20 mi ~5 min
2400 West End Avenue, Nashville 37203
Transit 21ST AVE N & CHURCH ST SB 0.22 mi ~5 min
Hotel Hyatt House Nashville At Vanderbilt 0.22 mi ~5 min
Coffee Poindexter Coffee 0.36 mi ~8 min
Coffee Starbucks 0.40 mi ~9 min
Gas station Shell 0.40 mi ~8 min
2112 Charlotte Avenue, Nashville 37203
EV charging 0.41 mi ~9 min
Gas station Daily's 0.41 mi ~9 min
EV charging 0.42 mi ~9 min
Coffee Starbucks 0.48 mi ~10 min
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 |
|---|---|---|
| 4492 | AZ | Clinical Psychologist |
| 3619 | TN | Psychologist primary |
Licences are recorded in 2 states: AZ, TN. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Clinical Psychologist
- PAC ID
- 5395153530
- Enrollment ID
- I20210428000358
Medicare enrolment is recorded as approved under the provider type Practitioner - Clinical Psychologist. 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 2 states
This provider holds licences in 2 states: Arizona and Tennessee. The practice address on file is in Nashville, TN, 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 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 Psychologist covers
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public. NUCC Health Care Provider Taxonomy, code 103T00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 103TC0700X | Clinical Psychologist Clinical | 4492 | AZ | |
| 103T00000X | Psychologist | 3619 | TN | 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 | 1003226986 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 1, 2014 |
| Last updated | Apr 10, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | PH.D. |
| Practice address |
201 23RD AVE N Nashville, TN 37203 (615) 348-7908 |
| Mailing address |
13258 DOMINUS WAY Colorado Springs, CO 80921 |
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 | 2 | 6 | 9 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 2 | 3 | 9 | 7 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.