Constantine’s New York State Registered Physician certificate for 1951-1952, recording the address of his Upper East Side practice: 20 East 74th Street, New York, NY. License No. 41039 (the same NY State medical license he had held since November 16, 1942). Effective January 1, 1951, expires December 31, 1952. Signed by Jacob L. Lochner Jr., Secretary of the Board of Medical Examiners, and Robert C. Killough Jr., Assistant Commissioner of Education.
The Upper East Side practice — 20 East 74th Street
By 1951 Constantine had moved his practice from the 44 West 77th Street Upper-West-Side office of c.1949-50 across Central Park to 20 East 74th Street between Madison and Fifth Avenues — a quintessential Upper East Side medical address. The move tracked the trajectory of his expanding clinical and academic appointments:
- 1949-1951: Asst Attending, Columbia-Presbyterian (UWS hospital district)
- 1949-1951: Chief Orthopedic Surgery, First Army HQ Hospital, Fort Jay NY
- 1951: American Board of Orthopaedic Surgery certification — January 27, 1951
- 1951-1966: NY State Rehab Hospital Haverstraw
- 1953-1967: Institute of Physical Medicine & Rehabilitation, NYU
The 1951 move to East 74th Street coincided with his board certification — the credential that authorized his subsequent NYU faculty appointments. The certificate’s January 1, 1951 effective date is, by chance, exactly 26 days before his Board of Orthopaedic Surgery diploma was conferred.
About the credentialing structure
A NY State Registered Physician certificate was a renewable two-year credential required separately from the NY State medical license itself (Constantine’s license No. 41039, issued November 1942, was lifetime). The biennial registration was the administrative checkpoint confirming the physician’s continued good standing, current practice address, and continuing-education compliance. Each two-year window produced a fresh certificate — Constantine would have held a sequence of these from 1942 onward.
The 1951-1952 certificate is preserved in his archive because of its address moment: the East 74th Street practice address is otherwise undocumented in the family record. The certificate captures the moment Constantine became a board-certified orthopedic surgeon practicing at a quintessential UES address — the professional consolidation phase of his American career.
Practice-address chronology (now complete)
| Years | Address | Phase |
|---|---|---|
| 1941 | 28 W. 69th St (Manhattan, with Takis) | Arrival from Italy |
| 1941-43 | 370 Fort Washington Ave (Washington Heights) | NY State license, draft entry |
| 1943-46 | Various US + EAME Theater | Army Medical Corps |
| 1946-49 | 2540 Cambreleng Ave (Bronx — Belmont/Fordham) | Residencies + Sophie’s PhD |
| ~1949-50 | 44 West 77th Street (UWS) | Initial private practice |
| 1951-52 | 20 East 74th Street (UES) — THIS CERTIFICATE | Board-certified specialist |
| 1953-1980 | Various NYC + Santo Domingo | NYU faculty + Caribbean engagements |
| 1970s-80 | 27 W 96 St Apt 8D, NYC 10025 + Arzobispo Merino 154, Santo Domingo | Late life |
Provenance
Preserved in Constantine’s personal papers (2010 Peter-Jeannopoulos scan, item 0028). The 1951-1952 certificate is the earliest preserved instance from the biennial-registration sequence; later registration certificates may have been routinely discarded as they expired, but this one survived alongside the 1942 original license and the 1951 board certification.
