Clinical Neuropsychologist
NUCC 103G00000X
5,808 CMS NPPES-registered providers across 53 states · 126th of 690 specialties by headcount.
Where this specialty sits in the corpus
Clinical Neuropsychologist ranks 126th of 690 NUCC specialties by CMS NPPES headcount (0.08% of all registered NPIs), densest in California; per resident District of Columbia leads.
- 5,808
- NPPES providers in specialty
- 126th
- of 690 specialties
- 516
- state-share HHI
- 0.3%
- Part D prescriber share
District of Columbia is densest per capita (3.7× the national rate; Massachusetts 3.1×).
Taxonomy fingerprint
Clinical Neuropsychologist (NUCC 103G00000X; 0.3% Part D prescribers (20 of 5,808); avg 926 Part D claims/prescriber (169th of 572); Open Payments avg $486/physician (363rd of 551; 7 paid, $3K total); state-share HHI 516; next-larger headcount neighbor Endodontics (+166); next-smaller Neonatal-Perinatal Medicine Physician (-18)).
Next larger: Endodontics (5,974) Next smaller: Neonatal-Perinatal Medicine Physician (5,790)
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
- District of Columbia 3.7× · 6.3/100k
- Massachusetts 3.1× · 5.4/100k
- Rhode Island 3.1× · 5.4/100k
- Connecticut 2.2× · 3.7/100k
- Maine 1.7× · 2.9/100k
Under-indexed vs national rate
- Mississippi 0.22× · 0.4/100k
- South Carolina 0.39× · 0.7/100k
- Alabama 0.43× · 0.7/100k
- Oklahoma 0.45× · 0.8/100k
- Kansas 0.46× · 0.8/100k
Which states have the most providers?
| # | State | Providers |
|---|---|---|
| 1 | California | 812 |
| 2 | New York | 483 |
| 3 | Florida | 385 |
| 4 | Massachusetts | 379 |
| 5 | Texas | 379 |
| 6 | Pennsylvania | 266 |
| 7 | Illinois | 232 |
| 8 | New Jersey | 165 |
| 9 | Michigan | 154 |
| 10 | Maryland | 146 |
| 11 | Ohio | 143 |
| 12 | Arizona | 136 |
| 13 | Minnesota | 135 |
| 14 | North Carolina | 135 |
| 15 | Connecticut | 134 |
Top Cities for Clinical Neuropsychologist
| # | City | Providers |
|---|---|---|
| 1 | New YorkNew York | 204 |
| 2 | HoustonTexas | 90 |
| 3 | BostonMassachusetts | 88 |
| 4 | Los AngelesCalifornia | 87 |
| 5 | San FranciscoCalifornia | 78 |
| 6 | DallasTexas | 77 |
| 7 | BaltimoreMaryland | 72 |
| 8 | ChicagoIllinois | 67 |
| 9 | San DiegoCalifornia | 63 |
| 10 | PhoenixArizona | 54 |
| 11 | PhiladelphiaPennsylvania | 53 |
| 12 | MinneapolisMinnesota | 49 |
Sample Clinical Neuropsychologist NPIs
A directory sample from this NUCC code (not a ranking). Names and locations are unique to this taxonomy.
| # | Provider |
|---|---|
| 1 | Lawrence Klusman, PH.D.Baton Rouge, LA |
| 2 | Kenneth Rider, PHDMountain View, CA |
| 3 | Jody Hagen, PHDSpringfield, MO |
| 4 | Edward Feher, PH.D.Frederick, MD |
| 5 | Gordon Herz, PHDMadison, WI |
| 6 | Diane Howieson, PH.D.Portland, OR |
| 7 | John Meyers, PSYDDakota Dunes, SD |
| 8 | Douglas Mason, PSYDLeesburg, FL |
| 9 | David Rawlings, PHDNaples, FL |
| 10 | Lynne Reed, PHDGuerneville, CA |
| 11 | Gary Krupp, PHDMinneapolis, MN |
| 12 | Keven Murphy, PH.D.North Granby, CT |
| 13 | Stephanie Moore, PSYDSanta Ana, CA |
| 14 | Jan Warner, PHD HSPPMishawaka, IN |
| 15 | Gregory Lamberty, PHDMinneapolis, MN |
| 16 | Marc Quillen, PH.DLawrence, KS |
| 17 | Odie Bracy, PHDIndianapolis, IN |
| 18 | Sharon Joseph, PH. D.Elkins, WV |
Frequently Asked Questions
Where does the large Clinical Neuropsychologist headcount concentrate?
How large is Clinical Neuropsychologist's Open Payments footprint?
How heavy is Clinical Neuropsychologist 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.