Perinatal Registered Nurse

Compiled from official public sources by the editorial process. · Updated August 2026

NUCC 163WP1700X · Registered Nurse

172 CMS NPPES-registered providers across 38 states · 465th of 690 specialties by headcount.

172

Providers

CMS NPPES-registered

States

with ≥1 NPI

California

Top state

45 providers

$312

Open Pay avg

424th of 551 specialties

Where this specialty sits in the corpus

Perinatal Registered Nurse ranks 465th of 690 NUCC specialties by CMS NPPES headcount (0% of all registered NPIs), densest in California; per resident Utah leads.

172
NPPES providers in specialty: 465th
of 690 specialties: 931
state-share HHI: 7.6%
Part D prescriber share

Utah is densest per capita (5.2× the national rate; Maryland 3.2×); 0.1% of the Registered Nurse category.

Taxonomy fingerprint

Perinatal Registered Nurse (NUCC 163WP1700X; 7.6% Part D prescribers (13 of 172); avg 577 Part D claims/prescriber (274th of 572); Open Payments avg $312/physician (424th of 551; 18 paid, $6K total); state-share HHI 931; next-larger headcount neighbor Women's Health Clinical Nurse Specialist (+3); next-smaller Dental Therapist (-2)).

Next larger: Women's Health Clinical Nurse Specialist (175) Next smaller: Dental Therapist (170)

Which states have the most providers?

#	State	Providers	% of specialty
1	California	45	26.2%
2	Washington	11	6.4%
3	Maryland	10	5.8%
4	Texas	9	5.2%
5	Utah	9	5.2%
6	Georgia	7	4.1%
7	New York	7	4.1%
8	Colorado	6	3.5%

Sample Perinatal Registered Nurse NPIs

A directory sample from this NUCC code (not a ranking). Names and locations are unique to this taxonomy.

#	Provider	State
1	Glenda Stephan, MSRichmond, VA	Virginia
2	Janice Stinson, RNBerkeley, CA	California
3	Molly Stephenson, CNMFort Myers, FL	Florida
4	Dianne Bloom, MSN, CNMBethesda, MD	Maryland
5	Marilyn Skipper, RN , MN, ARNP,CNMSeattle, WA	Washington
6	Krista Kinne, ARNPSeattle, WA	Washington
7	Marilyn Hall, CNM, RDMSEnglewood, CO	Colorado
8	Mari Gambotto, NPBoulder, CO	Colorado
9	Susan Wolcott, LM, CPM, RNMount Shasta, CA	California
10	Rhaelynn Bonham, NPSan Luis Obispo, CA	California
11	Joanna Bigler-Jones, RNMinneapolis, MN	Minnesota
12	Bonnie-Jean Mackinnon, WOMENS HEALTHWorcester, MA	Massachusetts

All specialties · Search NPIs

Frequently Asked Questions

Why is Perinatal Registered Nurse a thin NUCC code in NPPES?

Only 172 NPIs list Perinatal Registered Nurse as primary taxonomy across 38 states (peak California, 45). That is 465th of 690 NUCC codes by headcount. Thin codes are still searchable by NPI; do not treat the low count as a quality signal.

Do the few Perinatal Registered Nurse NPIs in Open Payments look unusual?

CMS Open Payments 2024 lists 18 paid Perinatal Registered Nurse physicians totaling $6K (138 payments; average $312, 424th of 551 by average). Presence is not a quality judgment; thin specialties often have sparse payment rows.

How much Part D prescribing does this specialty do?

Among Perinatal Registered Nurse NPIs, 13 appear in the Medicare Part D Prescriber PUF (average 577 claims and $86K drug cost per prescriber; 274th of 572 specialties by average claims). Non-prescribing clinicians in the same NUCC code are still in NPPES.

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.