Dereck Phrathep, PH.D.
Dereck Phrathep, PH.D. is a Psychologist in St Petersburg, FL, registered under NPI 1003627498.
Getting there
Here is what surrounds this office in St Petersburg, based on OpenStreetMap data collected Aug 29, 2026. Parking is available about 301 ft away. There is EV charging 0.31 mi from the office (J1772 Charger) — useful if you are driving in from out of town. The nearest transit stop is 536 ft away, served by 4th Street South & 8th Avenue South. A pharmacy sits 0.38 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.46 mi away.
Getting here and what is nearby
Parking 163 ft ~1 min
Parking 208 ft ~1 min
Parking 301 ft ~2 min
Restaurant The Library 390 ft ~2 min
Transit 4th Street South & Mound Park Avenue South 429 ft ~2 min
Transit 4th Street South & 7th Avenue South 491 ft ~2 min
Transit 4th Street South & 8th Avenue South 536 ft ~3 min
EV charging J1772 Charger 0.31 mi ~7 min
Coffee The Campus Grind 0.32 mi ~7 min
Pharmacy CVS Pharmacy 0.38 mi ~8 min
Restaurant Bento 0.39 mi ~8 min
3rd Street South, Saint Petersburg
Restaurant Hangar Restaurant and Flight Lounge 0.41 mi ~9 min
540 1st Street Southeast, Saint Petersburg 33701
Hotel Hilton Saint Petersburg Bayfront 0.44 mi ~9 min
333 1st Street Southeast, Saint Petersburg 33701
Coffee First Street Coffee 0.46 mi ~10 min
Convenience Palm Bay Food Mart 0.47 mi ~10 min
3rd Avenue South, Saint Petersburg
Hotel Palm Bay Hotel 0.47 mi ~10 min
711 3rd Avenue South, Saint Petersburg
Grocery Publix 0.48 mi ~10 min
250 3rd Street South, Saint Petersburg 33701
Mo-Su 07:00-22:00
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 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
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 | 1003627498 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 15, 2025 |
| Last updated | Mar 5, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | PH.D. |
| Practice address |
501 6TH AVE S St Petersburg, FL 33701 (727) 767-4170 |
| Mailing address |
2725 59TH WAY N St Petersburg, FL 33710 |
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 | 6 | 2 | 7 | 4 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 2 | 5 | 4 | 9 |
Sum = 52 · next multiple of 10 = 60 · 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.