Mark Ruggles, PH.D.
Mark Ruggles, PH.D. is a Cognitive & Behavioral Psychologist in Frisco, TX, registered under NPI 1437453008. This provider registers 15 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 7589 PRESTON RD STE 900, Frisco, TX 75034. 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 |
|---|---|---|
| 34302 | TX | Cognitive & Behavioral Psychologist primary |
| 34302 | TX | Psychoanalysis Psychologist |
| 34302 | TX | Clinical Psychologist |
| 34302 | TX | Rehabilitation Psychologist |
| 34302 | TX | Adult Development & Aging Psychologist |
| 34302 | TX | Intellectual & Developmental Disabilities… |
| 34302 | TX | Addiction (Substance Use Disorder)… |
| 34302 | TX | Counseling Psychologist |
| 34302 | TX | Exercise & Sports Psychologist |
| 34302 | TX | Family Psychologist |
| 34302 | TX | Health Psychologist |
| 34302 | TX | Group Psychotherapy Psychologist |
| 34302 | TX | School Psychologist |
| 34302 | TX | Clinical Child & Adolescent Psychologist |
| 34302 | TX | Health Service Psychologist |
This provider holds licence 34302 issued in TX. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Cognitive & Behavioral covers
A psychologist who reflects an experimental-clinical approach distinguished by use of principles of human learning and development and theories of cognitive processing to promote meaningful change in maladaptive human behavior and thinking. NUCC Health Care Provider Taxonomy, code 103TB0200X
All registered taxonomy codes
This provider registers 15 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 103TB0200X | Cognitive & Behavioral Psychologist Cognitive & Behavioral | 34302 | TX | primary |
| 103TP0814X | Psychoanalysis Psychologist Psychoanalysis | 34302 | TX | |
| 103TC0700X | Clinical Psychologist Clinical | 34302 | TX | |
| 103TR0400X | Rehabilitation Psychologist Rehabilitation | 34302 | TX | |
| 103TA0700X | Adult Development & Aging Psychologist Adult Development & Aging | 34302 | TX | |
| 103TM1800X | Intellectual & Developmental Disabilities Psychologist Intellectual & Developmental Disabilities | 34302 | TX | |
| 103TA0400X | Addiction (Substance Use Disorder) Psychologist Addiction (Substance Use Disorder) | 34302 | TX | |
| 103TC1900X | Counseling Psychologist Counseling | 34302 | TX | |
| 103TE1100X | Exercise & Sports Psychologist Exercise & Sports | 34302 | TX | |
| 103TF0000X | Family Psychologist Family | 34302 | TX | |
| 103TH0004X | Health Psychologist Health | 34302 | TX | |
| 103TP2701X | Group Psychotherapy Psychologist Group Psychotherapy | 34302 | TX | |
| 103TS0200X | School Psychologist School | 34302 | TX | |
| 103TC2200X | Clinical Child & Adolescent Psychologist Clinical Child & Adolescent | 34302 | TX | |
| 103TH0100X | Health Service Psychologist Health Service | 34302 | 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-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 | 1437453008 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 22, 2010 |
| Last updated | Feb 5, 2026 |
| Status | Active |
| Sole proprietor | No |
| Credential | PH.D. |
| Practice address |
7589 PRESTON RD STE 900 Frisco, TX 75034 (903) 957-0082 Fax (903) 957-0351 |
| Mailing address |
425 N HIGHLAND AVE STE 260 Sherman, TX 75092 |
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 | 4 | 3 | 7 | 4 | 5 | 3 | 0 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 6 | 7 | 8 | 5 | 6 | 0 | 0 |
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.