20 most cited Administrative and/or Environmental Law faculty in the U.S., 2019-2023 (CORRECTED)

Based on the latest Sisk data, here are the twenty most-cited law faculty in administrative and/or environmental law in the U.S. for the period 2019-2023 (inclusive) (remember that the data was collected in late May/early June of 2024, and that the pre-2024 database did expand a bit since then).  Numbers are rounded to the nearest ten.    Faculty for whom roughly 75% or more of their citations (based on a sample) are in this area are listed; others with less than 75% of their citations in this field (but still a plurality) are listed in the category of "other highly cited scholars who work partly in this area."  (Note that Ricky Revesz, who was #1 last time, is currently in government service, so was not part of the Sisk study.)

 Administrative and/or Environmental Law

Rank	Name	School	Citations	Age in 2024
1	Gary Lawson	University of Florida, Gainesville	800	66
	Gillian Metzger	Columbia University	800	59
3	Christopher Walker	University of Michigan, Ann Arbor	770	45
4	Jody Freeman	Harvard University	600	60
5	Cary Coglianese	University of Pennsylvania	590	60
	Richard J. Pierce, Jr.	George Washington University	590	81
7	Jonathan Adler	Case Western Reserve University	580	55
8	J.B. Ruhl	Vanderbilt University	550	66
9	Richard Lazarus	Harvard University	520	70
10	Lisa Bressman	Vanderbilt University	500	58
11	Kristin Hickman	University of Minnesota	470	54
12	Wendy Wagner	University of Texas, Austin	410	64
13	Anne Joseph O’Connell	Stanford University	400	54
	Jim Rossi	Vanderbilt University	400	59
15	Michael Livermore	University of Virginia	390	45
16	Robert Glicksman	George Washington University	380	72
17	Robin Kundis Craig	University of Kansas	360	60
	Lisa Heinzerling	Georgetown University	360	63
19	Michael Blumm	Lewis & Clark	350	74
	Kevin Stack	Vanderbilt University	350	56
	Runners-up
	Jack Beermann	Boston University	340	66
	Douglas Kysar	Yale University	330	51
	Thomas O. McGarity	University of Texas, Austin	330	75
	Sidney Shapiro	Wake Forest University	330	77
		Other highly-cited scholars who work partly in these areas
	Adrian Vermeule	Harvard University	1350	56
	Thomas Merrill	Columbia University	1310	75
	Daniel Farber	University of California, Berkeley	1040	74
	Edward Rubin	Vanderbilt University	550	76
	Nicholas Bagley	University of Michigan, Ann Arbor	520	44