Registered Nurse First Assistant providers in the U.S.
2,542 NPPES records list registered nurse first assistant as their primary taxonomy, about 0.8 per 100,000 residents; Wyoming and New Jersey have the most per resident. 15 of them appear in the Medicare Part D prescriber file: a registry record is not proof of an active practice.
What taxonomy code 163WR0006X means
163WR0006X is the National Uniform Claim Committee code for Registered Nurse, Registered Nurse First Assistant, in the grouping Nursing Service Providers. 2,542 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
A perioperative registered nurse who works in collaboration with the surgeon and other health care team members to achieve optimal outcomes. The RNFA has acquired the necessary knowledge, judgment, and skills specific to the expanded role of RNFA clinical practice. Intraoperatively, the RNFA assists the surgeon.
Source: NUCC Health Care Provider Taxonomy code set, definition as NUCC publishes it (nucc.org); counts from CMS NPPES.
Most per resident: the 8 highest
Source: CMS NPPES, primary taxonomy 163WR0006X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
Fort Worth has the most, 28
Source: CMS NPPES, primary taxonomy 163WR0006X by practice city, file of Aug 9, 2026.
All 51 by state
| State | Records | Per 100,000 |
|---|---|---|
| Alabama | 21 | 0.4 |
| Alaska | 12 | 1.6 |
| Arizona | 95 | 1.3 |
| Arkansas | 5 | 0.2 |
| California | 303 | 0.8 |
| Colorado | 60 | 1.0 |
| Connecticut | 7 | 0.2 |
| Delaware | 4 | 0.4 |
| District of Columbia | 1 | 0.1 |
| Florida | 215 | 1.0 |
| Georgia | 102 | 0.9 |
| Hawaii | 5 | 0.3 |
| Idaho | 8 | 0.4 |
| Illinois | 90 | 0.7 |
| Indiana | 26 | 0.4 |
| Iowa | 12 | 0.4 |
| Kansas | 8 | 0.3 |
| Kentucky | 26 | 0.6 |
| Louisiana | 45 | 1.0 |
| Maine | 27 | 1.9 |
| Maryland | 24 | 0.4 |
| Massachusetts | 13 | 0.2 |
| Michigan | 23 | 0.2 |
| Minnesota | 19 | 0.3 |
| Mississippi | 42 | 1.4 |
| Missouri | 103 | 1.7 |
| State | Records | Per 100,000 |
|---|---|---|
| Montana | 10 | 0.9 |
| Nebraska | 2 | 0.1 |
| Nevada | 36 | 1.1 |
| New Hampshire | 1 | 0.1 |
| New Jersey | 213 | 2.3 |
| New Mexico | 13 | 0.6 |
| New York | 127 | 0.6 |
| North Carolina | 20 | 0.2 |
| North Dakota | 3 | 0.4 |
| Ohio | 69 | 0.6 |
| Oklahoma | 18 | 0.4 |
| Oregon | 90 | 2.1 |
| Pennsylvania | 60 | 0.5 |
| Rhode Island | 2 | 0.2 |
| South Carolina | 13 | 0.2 |
| South Dakota | 2 | 0.2 |
| Tennessee | 37 | 0.5 |
| Texas | 310 | 1.0 |
| Utah | 6 | 0.2 |
| Vermont | 1 | 0.2 |
| Virginia | 43 | 0.5 |
| Washington | 124 | 1.6 |
| West Virginia | 11 | 0.6 |
| Wisconsin | 15 | 0.3 |
| Wyoming | 20 | 3.4 |
In federal data
- NUCC code163WR0006X · Registered Nurse
- Size rank182nd of 688 specialties by records (0.03% of all)
- In its family15th of 56 Registered Nurse codes, 1% of the family
- Part D prescribers15 (0.6% of records)
- Part D claims265 a year per prescriber, on average (247th of 496)
- Industry payments38 physicians paid $5K in 2024, $141 each on average
- Concentration6 states hold half of all records
Source: CMS NPPES; Medicare Part D Prescriber PUF; CMS Open Payments 2024. Presence in these files is not a quality judgment.
A sample of registered nurse first assistant records
- Autumn Hoibakk, RNFAAnchorage, AK1184150724
- Juliet GravesAnchorage, AK1154511228
- Jeremy Hatch, RNFAAnchorage, AK1851882112
- Jaimeson Hatch, RNFAAnchorage, AK1619541364
- Marcus PearsonAnchorage, AK1164384863
- Barbara Wortman, R.N.F.A.Eagle River, AK1518082288
- Maryalice Montgomery, RN CNOR RNFAEagle River, AK1407009665
- Marisa Kelly, RNPalmer, AK1053903799
- Lori KarvonenSoldotna, AK1205102704
- Amanda Ward, RNFAFairbanks, AK1972133619
- Elizabeth PattersonFairbanks, AK1093413031
- Jennifer Bingaman, RNFANorth Pole, AK1952064784
- Hailey HamptonCenter Point, AL1205643269
- Amelia Hill, RNFA, CNORBirmingham, AL1134543499
- Andrew Haggard, RNFABirmingham, AL1629969753
- Christopher Morrow, RN, BSN, CNOR, RNFABirmingham, AL1609275460
Registry order, not a ranking. Search by name to find one provider.
Common questions
Where does the large Registered Nurse First Assistant headcount concentrate?
2,542 Registered Nurse First Assistant NPIs span 51 states; Texas alone holds 310. Top metros include Fort Worth, TX; Modesto, CA; Saint Louis, MO; Houston, TX. Nationally this is 182nd of 688 NUCC codes.
How large is Registered Nurse First Assistant's Open Payments footprint?
CMS Open Payments 2024 lists 38 Registered Nurse First Assistant physicians totaling $5K (115 payments; average $141, 385th of 470). Presence in Open Payments is not a quality judgment.
How heavy is Registered Nurse First Assistant Part D prescribing at scale?
Among Registered Nurse First Assistant NPIs, 15 appear in the Medicare Part D Prescriber PUF (average 265 claims and $13K drug cost per prescriber; 247th of 496 specialties by average claims). Non-prescribing clinicians in the same NUCC code are still in NPPES.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy (nucc.org); Medicare Part D Prescriber PUF; CMS Open Payments 2024. Counts are self-designated primary taxonomy, not board certification.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.