How many nights a year does a nocturnist work?

182 or 183 on 7 on, 7 off, depending on where the year starts, and about 122 on 7 on, 14 off. Many groups set a number of nights a month instead.

How many nocturnists does a group need?

Multiply 365 by the nocturnists on shift each night, then divide by the nights one nocturnist works a year. Two a night on 7 on, 7 off takes at least 4 full-time nocturnists, plus cover for sick days.

What a nocturnist is, and how many a group needs

Updated October 12, 2026 · with an example to try

A nocturnist is a hospitalist who works only or mostly at night, covering admissions, cross-cover and rapid responses. One nocturnist a night on 7 nights on, 7 off takes at least 2 people, plus backup; two a night takes at least 4.

Work out how many nocturnists you need

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Nocturnists on shift each nightEach nocturnist works

Night shifts a year: 730
Nights per nocturnist: 182 or 183
Full-time nocturnists: 4

4 people on this pattern cover 730 night shifts.

Multiply 365 by the nocturnists on shift each night, then divide by the nights one nocturnist works a year: half the year on 7 on, 7 off, a third on 7 on, 14 off. Cover for sick days comes on top.

What nocturnists do

In a 2019 national survey of night hospitalists, 99% admitted patients, 95% cross-covered other teams' patients, 83% saw consults and 68% answered rapid responses. Physicians who admitted more than five patients a night were less likely to agree they could give safe care: 63%, compared with 88% of those with five or fewer.

How the role spread

John Nelson, the hospitalist who coined the word nocturnist, estimated in 2011 that about 1,500 hospitals employed at least one nocturnist, up from fewer than 100 a decade before. In teaching hospitals the role grew after the ACGME limited resident work hours in 2003 and again in 2011.

Hospital medicine groups using nocturnists, from the Society of Hospital Medicine's surveys (The Hospitalist, 2011 and 2017)
Survey	Share of groups
2010 to 2011	41%
2016	Over 70%

Schedules nocturnists work

Two block patterns are common. On 7 on, 7 off, a nocturnist works half the nights of the year; on 7 on, 14 off, a third. The fewer nights each person works, the more nocturnists the group needs, as the calculator above shows.

What studies found

A 2025 review found patients did no better or worse in mortality, readmissions or length of stay when nocturnists covered nights. In a Toronto teaching hospital, nocturnists did not change patient outcomes but recorded patients' code status more often than residents did (54.9%, compared with 35.3%).

Common questions

How many nights a year does a nocturnist work?: 182 or 183 on 7 on, 7 off, depending on where the year starts, and about 122 on 7 on, 14 off. Many groups set a number of nights a month instead.
How many nocturnists does a group need?: Multiply 365 by the nocturnists on shift each night, then divide by the nights one nocturnist works a year. Two a night on 7 on, 7 off takes at least 4 full-time nocturnists, plus cover for sick days.

Chart your own shifts over time.

Capillary Health makes scheduling software for hospitals and clinics. The free checks keep nothing; a free account is different. It saves your work calendar's shifts and charts your hours, nights and rest between shifts over time. No one in your department or hospital sees them (who can see what).

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