Lactation Consultant (Registered Nurse)
4,530 active US providers register Lactation Consultant (Registered Nurse) as their primary taxonomy. That is 0.05% of every provider in the registry, and the 197th largest of 584 specialties with a page here.
- Taxonomy code
- 163WL0100X
- Grouping
- Nursing Service Providers
- Classification
- Registered Nurse
- Specialization
- Lactation Consultant
- Active providers
- 4,530
- States covered
- 51 of 51
What the code means
Definition to come...
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 | 492 | |
| Texas | 364 | |
| New York | 253 | |
| Florida | 231 | |
| Illinois | 223 | |
| Virginia | 197 | |
| North Carolina | 173 | |
| Pennsylvania | 149 | |
| New Jersey | 141 | |
| Oklahoma | 136 | |
| Maryland | 131 | |
| Massachusetts | 126 | |
| Arizona | 122 | |
| Washington | 119 | |
| Tennessee | 119 |
Showing the 15 largest of 51 states with at least one.
Who registers under this code
4,040 of these are people and 490 are organisations, so 11% of the code is businesses rather than clinicians. Half of them had registered by 2022, and 2,649 registered in the last five years, 58% of the current population.
That is a fast-growing code. A population where a large share registered recently is either a genuinely expanding field or a category NPPES added late, and the taxonomy definition above usually tells you which.
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.
- CHICAGO, IL46
- AUSTIN, TX39
- TULSA, OK39
- SEATTLE, WA33
- SAN DIEGO, CA33
- TUCSON, AZ29
- HOUSTON, TX28
- SAN FRANCISCO, CA26
- OMAHA, NE26
- OKLAHOMA CITY, OK26
What else they list
Providers whose primary code is Lactation Consultant (Registered Nurse) 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 |
|---|---|---|
| Registered Nurse | 303 | 6.7% |
| Lactation Consultant (Non-RN) | 111 | 2.5% |
| Maternal Newborn Registered Nurse | 107 | 2.4% |
| Doula | 71 | 1.6% |
| Neonatal Intensive Care Registered Nurse | 24 | 0.5% |
| Inpatient Obstetric Registered Nurse | 19 | 0.4% |
| Health Educator | 18 | 0.4% |
| Pediatric Registered Nurse | 17 | 0.4% |
Nearby specialties
Other taxonomies NUCC files under Registered Nurse.
- Adult Psychiatric/Mental Health Registered Nurse4,522
- General Practice Registered Nurse4,739
- Critical Care Medicine Registered Nurse4,209
- Emergency Registered Nurse3,605
- Case Management Registered Nurse5,718
- Ambulatory Care Registered Nurse3,325
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.