CHARLES F. GRAY, PH.D., P.C.
CHARLES F. GRAY, PH.D., P.C. is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1720290448, based in Houston, TX. The organization lists 8 taxonomy classifications, with Professional Counselor recorded as primary.
Getting there
The practice address on file is 8303 SOUTHWEST FWY SUITE 330, Houston, TX 77074. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 16215 | TX | Professional Counselor primary |
| 16215 | TX | Counselor |
| 16215 | TX | Mental Health Counselor |
| 16215 | TX | Pastoral Counselor |
| 22982 | TX | Cognitive & Behavioral Psychologist |
| 23341 | TX | Cognitive & Behavioral Psychologist |
| 23341 | TX | Clinical Psychologist |
| 22982 | TX | Clinical Psychologist |
| 23341 | TX | Counseling Psychologist |
| 22982 | TX | Counseling Psychologist |
| 23341 | TX | Family Psychologist |
| 22982 | TX | Family Psychologist |
This provider holds licence 16215 issued in TX. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 3173588258
- Enrollment ID
- O20041130001132
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. 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.
What Professional covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YP2500X
All registered taxonomy codes
This provider registers 12 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 101YP2500X | Professional Counselor Professional | 16215 | TX | primary |
| 101Y00000X | Counselor | 16215 | TX | |
| 101YM0800X | Mental Health Counselor Mental Health | 16215 | TX | |
| 101YP1600X | Pastoral Counselor Pastoral | 16215 | TX | |
| 103TB0200X | Cognitive & Behavioral Psychologist Cognitive & Behavioral | 22982 | TX | |
| 103TB0200X | Cognitive & Behavioral Psychologist Cognitive & Behavioral | 23341 | TX | |
| 103TC0700X | Clinical Psychologist Clinical | 23341 | TX | |
| 103TC0700X | Clinical Psychologist Clinical | 22982 | TX | |
| 103TC1900X | Counseling Psychologist Counseling | 23341 | TX | |
| 103TC1900X | Counseling Psychologist Counseling | 22982 | TX | |
| 103TF0000X | Family Psychologist Family | 23341 | TX | |
| 103TF0000X | Family Psychologist Family | 22982 | TX |
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1720290448 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | May 4, 2007 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Practice address |
8303 SOUTHWEST FWY SUITE 330 Houston, TX 77074 (713) 774-2122 Fax (713) 774-3223 |
| Other identifiers |
07DJ
· Other (TX) |
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 | 7 | 2 | 0 | 2 | 9 | 0 | 4 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 4 | 0 | 4 | 9 | 0 | 4 | 8 |
Sum = 62 · next multiple of 10 = 70 · check digit = 8 · actual last digit = 8
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.