Oncology Clinical Nurse Specialist
NUCC 364SX0200X · Clinical Nurse Specialist
230 CMS NPPES-registered providers across 41 states · 430th of 690 specialties by headcount.
Where this specialty sits in the corpus
Oncology Clinical Nurse Specialist ranks 430th of 690 NUCC specialties by CMS NPPES headcount (0% of all registered NPIs), densest in California; per resident Ohio leads.
- 230
- NPPES providers in specialty
- 430th
- of 690 specialties
- 631
- state-share HHI
- 27.8%
- Part D prescriber share
Ohio is densest per capita (3.3× the national rate; Connecticut 3.3×); 2.5% of the Clinical Nurse Specialist category.
Taxonomy fingerprint
Oncology Clinical Nurse Specialist (NUCC 364SX0200X; 27.8% Part D prescribers (64 of 230); avg 420 Part D claims/prescriber (316th of 572); Open Payments avg $3K/physician (140th of 551; 93 paid, $314K total); state-share HHI 631; next-larger headcount neighbor Child & Adolescent Psychiatric/Mental Health Clinical Nurse Specialist (+3); next-smaller Prescribing (Medical) Psychologist (-2)).
Next larger: Child & Adolescent Psychiatric/Mental Health Clinical Nurse Specialist (233) Next smaller: Prescribing (Medical) Psychologist (228)
Which states have the most providers?
| # | State | Providers |
|---|---|---|
| 1 | California | 27 |
| 2 | Florida | 26 |
| 3 | Ohio | 26 |
| 4 | Illinois | 23 |
| 5 | New Jersey | 14 |
| 6 | New York | 9 |
| 7 | Connecticut | 8 |
| 8 | Indiana | 7 |
Sample Oncology Clinical Nurse Specialist NPIs
A directory sample from this NUCC code (not a ranking). Names and locations are unique to this taxonomy.
| # | Provider |
|---|---|
| 1 | Toni Klatt-Ellis, CNSElkhart, IN |
| 2 | Natalie Mandolfo, APRNPapillion, NE |
| 3 | Elizabeth Hamlin, MSN, APRNManchester, NH |
| 4 | Susan Herbst, PN MS AOCNCoeur D Alene, ID |
| 5 | Pamela Bolton, APRNPort Charlotte, FL |
| 6 | Alison Seiz, APRNDeland, FL |
| 7 | Mary Thomas, RN, MS, AOCNPalo Alto, CA |
| 8 | Mary Duong, PACLos Angeles, CA |
| 9 | Lynette Kemp, A.P.R.N.Spartanburg, SC |
| 10 | Shanda Bruner, APRNKnoxville, TN |
| 11 | Jennifer Carrier-Myers, N.P.Torrington, CT |
| 12 | Eris Zagar, APRNColumbia, MO |
Frequently Asked Questions
How should I read Oncology Clinical Nurse Specialist's mid-pack national roster?
How does Oncology Clinical Nurse Specialist 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.