Registered Nurse First Assistant
NUCC 163WR0006X · Registered Nurse
2,714 CMS NPPES-registered providers across 50 states · 170th of 690 specialties by headcount.
Where this specialty sits in the corpus
Registered Nurse First Assistant ranks 170th of 690 NUCC specialties by CMS NPPES headcount (0.04% of all registered NPIs), densest in California; per resident Wyoming leads.
- 2,714
- NPPES providers in specialty
- 170th
- of 690 specialties
- 572
- state-share HHI
- 6.4%
- Part D prescriber share
Wyoming is densest per capita (4.7× the national rate; Maine 4.3×); 0.9% of the Registered Nurse category.
Taxonomy fingerprint
Registered Nurse First Assistant (NUCC 163WR0006X; 6.4% Part D prescribers (173 of 2,714); avg 369 Part D claims/prescriber (334th of 572); Open Payments avg $508/physician (359th of 551; 191 paid, $97K total); state-share HHI 572; next-larger headcount neighbor Sports Medicine (Orthopaedic Surgery) Physician (+52); next-smaller Cognitive & Behavioral Psychologist (-26)).
Next larger: Sports Medicine (Orthopaedic Surgery) Physician (2,766) Next smaller: Cognitive & Behavioral Psychologist (2,688)
Population-adjusted state index
Each multiple is this specialty's providers-per-resident in a state divided by the national rate (Census Vintage population estimates). Raw headcount favors large states; this ranking surfaces denser markets.
Over-indexed vs national rate
- Wyoming 4.7× · 3.8/100k
- Maine 4.3× · 3.4/100k
- New Jersey 2.9× · 2.3/100k
- Oregon 2.7× · 2.1/100k
- Alaska 2.4× · 1.9/100k
Under-indexed vs national rate
- Arkansas 0.20× · 0.2/100k
- Massachusetts 0.23× · 0.2/100k
- North Carolina 0.23× · 0.2/100k
- Connecticut 0.28× · 0.2/100k
- Utah 0.29× · 0.2/100k
Which states have the most providers?
| # | State | Providers |
|---|---|---|
| 1 | California | 321 |
| 2 | Texas | 319 |
| 3 | Florida | 224 |
| 4 | New Jersey | 217 |
| 5 | New York | 135 |
| 6 | Washington | 127 |
| 7 | Arizona | 109 |
| 8 | Georgia | 108 |
| 9 | Missouri | 108 |
| 10 | Illinois | 95 |
| 11 | Oregon | 91 |
| 12 | Pennsylvania | 69 |
| 13 | Ohio | 68 |
| 14 | Colorado | 60 |
| 15 | Mississippi | 54 |
Top Cities for Registered Nurse First Assistant
| # | City | Providers |
|---|---|---|
| 1 | Fort WorthTexas | 28 |
| 2 | Saint LouisMissouri | 26 |
| 3 | ModestoCalifornia | 25 |
| 4 | DallasTexas | 25 |
| 5 | TucsonArizona | 24 |
| 6 | PhoenixArizona | 23 |
| 7 | TampaFlorida | 23 |
| 8 | RenoNevada | 22 |
| 9 | PortlandOregon | 20 |
| 10 | HoustonTexas | 20 |
| 11 | ColumbusOhio | 19 |
| 12 | Saint CharlesMissouri | 18 |
Sample Registered Nurse First Assistant NPIs
A directory sample from this NUCC code (not a ranking). Names and locations are unique to this taxonomy.
| # | Provider |
|---|---|
| 1 | Theresa Fury, RNFALutherville, MD |
| 2 | Kenneth Clements, RNFASwansea, IL |
| 3 | David Cooper, RNFASwansea, IL |
| 4 | Roseann Chernek, R.N.F.A.Westerville, OH |
| 5 | Debra Eustace, RNFANew Brunswick, NJ |
| 6 | William Blaylock, RNFAChico, TX |
| 7 | Lois Partridge, RNFAArlington, TX |
| 8 | Linda Hart, RNFAFellsmere, FL |
| 9 | Nancy Rove, CRNFABurbank, CA |
| 10 | Susan Flax-Heyer, CRNFAChatsworth, CA |
| 11 | Karen Boullain, RNMarietta, GA |
| 12 | Lori Bellwood, DNP, CNM, MSNPortland, ME |
| 13 | Jane Minish, RN, BSN, CNOR, CRNFABremerton, WA |
| 14 | Dawn Schultz, RNFALancaster, CA |
| 15 | Jolene Culver, ARNP, CRNFAKennewick, WA |
| 16 | Kathleen McCullough, CRNFAJacksonville, TX |
| 17 | Colleen McIntyre, RN FIRST ASSISTANTTavares, FL |
| 18 | Julie Unruh, APRN, FNPColorado Springs, CO |
Related Specialties
Adjacent specialties in the NUCC Health Care Provider Taxonomy - same Registered Nurse category.
Compare Registered Nurse First Assistant vs Registered Nurse →
Frequently Asked Questions
Where does the large Registered Nurse First Assistant headcount concentrate?
How large is Registered Nurse First Assistant's Open Payments footprint?
How heavy is Registered Nurse First Assistant Part D prescribing at scale?
Data sources and methodology
Provider data from CMS NPPES (download.cms.gov/nppes). Specialty classification from NUCC Health Care Provider Taxonomy (nucc.org). Part D averages from the CMS Medicare Part D Prescriber PUF; industry payments from CMS Open Payments 2024. Counts reflect self-designated primary taxonomy at NPI enrollment. PlainDoctor does not rate or rank providers. Methodology · About
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-08-27.