The membership total has effectively doubled between 1998 and 2008.

Membership totals were 40,223 at the beginning of 2010, with approximately 7900 active members daily.

In 1939, the membership total rose to 5.3 million with 81% being male and 19% being female.

Later estimates raised the membership total to 3,000, including a group of five hundred described as 'hard-core'.

Membership totals have not been released since the realignment.

The period saw increasing popular support (surpassing 10% for the first time) and membership totals, numbering over 1,000 by the mid-1980s.

Council noted with approval the 1991 year-end membership total of 43 034, the highest ever, and an increase of 882 since December 1990.

Membership total as of Dec 31, 2011 (including residents and students) was 217,490 of approximately 954,000 practicing physicians.

Officer structure and membership totals are chapter dependent.

Over the course of 2006, the NPD processed roughly 1,000 party applications to put the membership total at 7,000.