Joshua Brien
Joshua Brien is an Exercise & Sports Psychologist in Boston, MA, registered under NPI 1891675112. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 1304 COMMONWEALTH AVE, Boston, MA 02134. 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
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 Exercise & Sports covers
A psychologist with a proficiency in sports psychology that uses psychological knowledge and skills to address optimal performance and well-being of athletes, developmental and social aspects of sports participation, and systemic issues associated with sports settings and organizations. APA recognizes sport psychology as a proficiency acquired after a doctoral degree in one of the primary areas of psychology and licensure as a psychologist. This proficiency does not include those who have earned a doctoral degree in sport psychology but are not licensed psychologists. Sport Psychology interventions are designed to assist athletes and other sports participants (e.g., coaches, administrators, parents) from a wide array of settings, levels of competition, and ages, ranging from recreational youth participants to professional and Olympic athletes to master's level performers. NUCC Health Care Provider Taxonomy, code 103TE1100X
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 | |
|---|---|---|---|---|
| 101YM0800X | Mental Health Counselor Mental Health | — | — | |
| 103TE1100X | Exercise & Sports Psychologist Exercise & Sports | — | — | 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 | 1891675112 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 5, 2025 |
| Last updated | Sep 5, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
1304 COMMONWEALTH AVE Boston, MA 02134 (617) 504-1284 |
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 | 8 | 9 | 1 | 6 | 7 | 5 | 1 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 9 | 1 | 3 | 7 | 1 | 1 | 2 |
Sum = 58 · next multiple of 10 = 60 · check digit = 2 · actual last digit = 2
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.