| First Name: | John Y. |
| Last Name: | Ma |
| Birth Year: | 1905 |
| Birth City: | |
| Birth State: | |
| Birth Nation: | Hong Kong |
| Type of Practice: | Retired FT ADDRESS (Mail,Home) |
| Certification | Certification Date | Recertified | Expires | Currently Certified | Certifying Board |
| Psychiatry | 1965 | Y | Psychiatry and Neurology |
| Certification | Certification Date | Recertified | Expires | Currently Certified |
| Career Type | Specialty | Position | Organization | City | State | Country | Career Years |
| Hospital Appointments | Dir | MH Ctr | Middlesex | 75-77 | |||
| Hospital Appointments | Comdr | US Naval Res | 57 |
| School: | Natl Med Coll Shanghai |
| Year of Graduation: | 1939 |
| Degree: | MD |
| Organization: | |
| Position / Years: |