Psychiatric Hospital Unit
2,428 active US providers register Psychiatric Hospital Unit as their primary taxonomy. That is 0.03% of every provider in the registry, and the 261st largest of 584 specialties with a page here.
- Taxonomy code
- 273R00000X
- Grouping
- Hospital Units
- Classification
- Psychiatric Unit
- Active providers
- 2,428
- States covered
- 51 of 51
What the code means
In general, a distinct unit of a hospital that provides acute or long-term care to emotionally disturbed patients, including patients admitted for diagnosis and those admitted for treatment of psychiatric problems on the basis of physicians' orders and approved nursing care plans. Long-term care may include intensive supervision to the chronically mentally ill, mentally disordered or other mentally incompetent persons; (2) For Medicare, a distinct part of a general acute care hospital admitting only patients whose admission to the unit is required for active treatment, whose treatment is of an intensity that can be provided only in an inpatient hospital setting, and whose condition is described by a psychiatric principal diagnosis contained in the Third Edition of the American Psychiatric Association Diagnostic and Statistical Manual or in Chapter 5 (Mental Disorders) of the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM). The unit must furnish, through the use of qualified personnel, psychological services, social work services, psychiatric nursing, occupational therapy, and recreational therapy. The unit must maintain medical records that permit determination of the degree and intensity of treatment provided to individuals who are furnished services in the unit; the unit must meet special staff requirements in that the unit must have adequate numbers of qualified professional and supportive staff to evaluate inpatients, formulate written, individualized, comprehensive treatment plans, provide active treatment measures and engage in discharge planning.
Definition quoted verbatim from the NUCC Health Care Provider Taxonomy code set, version 25.1. Not paraphrased.
Where they are
Counted by practice location, not by mailing address or by licence state. A provider practising across a state line is counted where they practise.
| State | Providers | Share |
|---|---|---|
| California | 237 | |
| Pennsylvania | 160 | |
| New York | 154 | |
| Texas | 145 | |
| Illinois | 139 | |
| Louisiana | 93 | |
| Ohio | 82 | |
| Florida | 81 | |
| Tennessee | 78 | |
| Massachusetts | 76 | |
| Michigan | 73 | |
| New Jersey | 70 | |
| Arkansas | 65 | |
| Mississippi | 65 | |
| North Carolina | 64 |
Showing the 15 largest of 51 states with at least one.
Who registers under this code
59 of these are people and 2,369 are organisations, so 98% of the code is businesses rather than clinicians. Half of them had registered by 2007, and 165 registered in the last five years, 7% of the current population.
That is a slow-growing code, which usually means an established field replacing retirements rather than expanding.
Where the practices are
By practice-location city. City counts are noisier than state counts, because a large employer files one address for many providers.
- TUCSON, AZ35
- CHICAGO, IL35
- LOS ANGELES, CA21
- BROOKLYN, NY19
- HOUSTON, TX19
- PHILADELPHIA, PA18
- NEW YORK, NY18
- SAN DIEGO, CA17
- MIAMI, FL13
- SAN ANTONIO, TX12
What else they list
Providers whose primary code is Psychiatric Hospital Unit most often carry these secondary taxonomies as well. This is the closest thing the registry has to a map of which specialties overlap in practice, and it is not published anywhere else.
| Also listed | Providers | Share |
|---|---|---|
| General Acute Care Hospital | 48 | 2.0% |
| Psychiatric Hospital | 34 | 1.4% |
| Psychiatry Physician | 14 | 0.6% |
| Substance Use Disorder Rehabilitation Hospital Unit | 14 | 0.6% |
| Clinical Social Worker | 12 | 0.5% |
| Community/Behavioral Health Agency | 9 | 0.4% |
| Child & Adolescent Psychiatry Physician | 9 | 0.4% |
| Geriatric Psychiatry Physician | 9 | 0.4% |
Looking up a specific provider
These counts come from the monthly NPPES file. To check one provider, use their NPI: the lookup reads the live registry and shows whether the identifier is still active, which the monthly file cannot tell you about the last few weeks.
Counts from npidata_pfile_20050523-20260712.csv, built 2026-08-09. Primary taxonomy only, deactivated identifiers excluded.