Inpatient Obstetric Registered Nurse
NUCC 163WX0003X · Registered Nurse
642 CMS NPPES-registered providers across 52 states · 316th of 690 specialties by headcount.
Where this specialty sits in the corpus
Inpatient Obstetric Registered Nurse ranks 316th of 690 NUCC specialties by CMS NPPES headcount (0.01% of all registered NPIs), densest in California; per resident Alaska leads.
- 642
- NPPES providers in specialty
- 316th
- of 690 specialties
- 368
- state-share HHI
- 10.3%
- Part D prescriber share
Alaska is densest per capita (6.5× the national rate; New Mexico 5.5×); 0.2% of the Registered Nurse category.
Taxonomy fingerprint
Inpatient Obstetric Registered Nurse (NUCC 163WX0003X; 10.3% Part D prescribers (66 of 642); avg 708 Part D claims/prescriber (234th of 572); Open Payments avg $371/physician (397th of 551; 70 paid, $26K total); state-share HHI 368; next-larger headcount neighbor Renal Nutrition Registered Dietitian (+3); next-smaller Pediatric Orthopaedic Surgery Physician (-7)).
Next larger: Renal Nutrition Registered Dietitian (645) Next smaller: Pediatric Orthopaedic Surgery Physician (635)
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
- Alaska 6.5× · 1.2/100k
- New Mexico 5.5× · 1/100k
- District of Columbia 4.7× · 0.9/100k
- Montana 3.7× · 0.7/100k
- Colorado 2.9× · 0.5/100k
Under-indexed vs national rate
- New Jersey 0.40× · 0.1/100k
- Pennsylvania 0.49× · 0.1/100k
- Illinois 0.63× · 0.1/100k
- Florida 0.65× · 0.1/100k
- Virginia 0.67× · 0.1/100k
Which states have the most providers?
| # | State | Providers |
|---|---|---|
| 1 | California | 59 |
| 2 | Texas | 46 |
| 3 | Arizona | 34 |
| 4 | Colorado | 32 |
| 5 | Florida | 28 |
| 6 | Georgia | 27 |
| 7 | New York | 27 |
| 8 | Washington | 27 |
| 9 | North Carolina | 26 |
| 10 | New Mexico | 22 |
| 11 | Ohio | 20 |
| 12 | Massachusetts | 18 |
| 13 | Illinois | 15 |
| 14 | Michigan | 14 |
| 15 | Indiana | 13 |
Top Cities for Inpatient Obstetric Registered Nurse
| # | City | Providers |
|---|---|---|
| 1 | PhoenixArizona | 19 |
| 2 | GallupNew Mexico | 18 |
| 3 | ChicagoIllinois | 9 |
| 4 | DenverColorado | 8 |
| 5 | CharlotteNorth Carolina | 8 |
| 6 | Ann ArborMichigan | 7 |
| 7 | WashingtonDistrict of Columbia | 6 |
| 8 | BrooklynNew York | 6 |
| 9 | New YorkNew York | 6 |
| 10 | PortlandOregon | 6 |
| 11 | SeattleWashington | 6 |
| 12 | SitkaAlaska | 5 |
Sample Inpatient Obstetric Registered Nurse NPIs
A directory sample from this NUCC code (not a ranking). Names and locations are unique to this taxonomy.
| # | Provider |
|---|---|
| 1 | Lisa Cone, CNMErie, PA |
| 2 | Rachelle Mueller, N.P.San Luis Obispo, CA |
| 3 | Julie Warner, RNTripler Amc, HI |
| 4 | Cathey Moore, RNFort Carson, CO |
| 5 | Mary Jane Ackerman, RNFairbanks, AK |
| 6 | Christine Uveges, RNFort Carson, CO |
| 7 | Roselva Rosetelopez, RNFort Irwin, CA |
| 8 | Robin HarroldFort Irwin, CA |
| 9 | Susannah Donahue-Negbaur, CNMBrooklyn, NY |
| 10 | Tanya WalterPittsburgh, PA |
| 11 | Rhonda Centuolo, CNMFort Campbell, KY |
| 12 | Rebecca BarrettSalem, OR |
| 13 | Deann Brown, R.N.C.N.MPanguitch, UT |
| 14 | Susan Korp, MDSan Antonio, TX |
| 15 | Milsa Amely, RNFAPalm City, FL |
| 16 | Jessica Reedy, NP, RNMadera, CA |
| 17 | Sandra Sikes, RN,BSN,MN WHCNPPortland, OR |
| 18 | Lynn Barabach, MSN, RNCleveland, OH |
Related Specialties
Adjacent specialties in the NUCC Health Care Provider Taxonomy - same Registered Nurse category.
Compare Inpatient Obstetric Registered Nurse vs Registered Nurse →
Frequently Asked Questions
How should I read Inpatient Obstetric Registered Nurse's mid-pack national roster?
How does Inpatient Obstetric Registered Nurse show up in Open Payments mid-pack?
How much Part D prescribing does this specialty do?
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.