Taking the train is rough, not to mention all the people. If all else fails, another option is New York City Access-A-Ride. You can probably qualify for temporary transportation being in cancer treatment or for as long as needed. You can take it door to door anywhere in NYC, for any reason, 24hrs, and is the same price as the MTA fare, $2.50 each way, and may take another passenger. In some boroughs you can take a black car service instead to certain locations, same fare. The only problem is the application interview time, around 30 days, but maybe it can be expedited. You can call to ask, request an application, if interested.

New York City Transit
Para Transit Division
130 Livingston Street
Brooklyn, NY 11301
1(877) 337-2017

10/09 T1N2bM0 Tonsil
11/09 Taxo Cisp 5-FU, 6 Months Hosp
01/11 35 IMRT 70Gy 7 Wks
06/11 30 HBO
08/11 RND PNI
06/12 SND PNI LVI
08/12 RND Pec Flap IORT 12 Gy
10/12 25 IMRT 50Gy 6 Wks Taxo Erbitux
10/13 SND
10/13 TBO/Angiograph
10/13 RND Carotid Remove IORT 10Gy PNI
12/13 25 Protons 50Gy 6 Wks Carbo
11/14 All Teeth Extract 30 HBO
03/15 Sequestromy Buccal Flap ORN
09/16 Mandibulectomy Fib Flap Sternotomy
04/17 Regraft hypergranulation Donor Site
06/17 Heart Attack Stent
02/19 Finally Cancer Free Took 10 yrs