I searched some Reno phone books (didn't write down the phone numbers)...

1948: Dr Elia hadn't made it to Reno yet

1949: We don't have that phone book

1950: Elia, Jos C MD 150 N Center Street
Residence 991 Whitaker Dr
Elia, Mrs. Penny 991 Whitaker Dr

1951: Elia, Jos C MD 150 N Center Street
Residence 6 Canyon Dr
Elia, Mrs. Penny 6 Canyon Dr

1952...same as 1951

1955: Elia, Jos C MD 150 N Center Street
In the yellow pages it tells us that Dr. Elia was an ear, nose, throat, and allergy doctor

1956...same as 1955

1957: Elia, Jos C MD 275 Hill (The address on the chip finally showed up! )

1958-1972 were basically the same as 1957

But in the 1958 book: Elia, Jos MD appeared at 400 S Arlington (NOTE: "our" Dr. Elia was Jos C)
Jump forward to 2000: Elia, Joseph MD 85 Kirman Ave. (no "C")