Research Study Specialist
NUCC 1744R1102X · Specialist
508 CMS NPPES-registered providers across 42 states · 343rd of 690 specialties by headcount.
Where this specialty sits in the corpus
Research Study Specialist ranks 343rd of 690 NUCC specialties by CMS NPPES headcount (0.01% of all registered NPIs), densest in California; per resident District of Columbia leads.
- 508
- NPPES providers in specialty
- 343rd
- of 690 specialties
- 596
- state-share HHI
- 4.9%
- Part D prescriber share
District of Columbia is densest per capita (4.9× the national rate; Maryland 3.5×); 0.7% of the Specialist category.
Taxonomy fingerprint
Research Study Specialist (NUCC 1744R1102X; 4.9% Part D prescribers (25 of 508); avg 922 Part D claims/prescriber (170th of 572); Open Payments avg $452/physician (371st of 551; 22 paid, $10K total); state-share HHI 596; next-larger headcount neighbor Acute Care Clinical Nurse Specialist (+12); next-smaller Psychosomatic Medicine Physician (-7)).
Next larger: Acute Care Clinical Nurse Specialist (520) Next smaller: Psychosomatic Medicine Physician (501)
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 4.9× · 0.7/100k
- Maryland 3.5× · 0.5/100k
- Minnesota 2.9× · 0.4/100k
- Massachusetts 2.4× · 0.4/100k
- Iowa 1.7× · 0.2/100k
Which states have the most providers?
| # | State | Providers |
|---|---|---|
| 1 | California | 84 |
| 2 | Florida | 37 |
| 3 | Texas | 36 |
| 4 | Maryland | 32 |
| 5 | New York | 31 |
| 6 | Massachusetts | 25 |
| 7 | Minnesota | 25 |
| 8 | North Carolina | 16 |
| 9 | Ohio | 16 |
| 10 | Pennsylvania | 15 |
| 11 | Arizona | 14 |
| 12 | Colorado | 14 |
| 13 | Georgia | 14 |
| 14 | Illinois | 13 |
| 15 | Missouri | 12 |
Top Cities for Research Study Specialist
| # | City | Providers |
|---|---|---|
| 1 | BostonMassachusetts | 15 |
| 2 | New YorkNew York | 15 |
| 3 | DurhamNorth Carolina | 11 |
| 4 | BaltimoreMaryland | 10 |
| 5 | MinneapolisMinnesota | 10 |
| 6 | HoustonTexas | 10 |
| 7 | Los AngelesCalifornia | 9 |
| 8 | ChicagoIllinois | 9 |
| 9 | BethesdaMaryland | 9 |
| 10 | ColumbiaMissouri | 9 |
| 11 | Palo AltoCalifornia | 8 |
| 12 | San FranciscoCalifornia | 8 |
Sample Research Study Specialist NPIs
A directory sample from this NUCC code (not a ranking). Names and locations are unique to this taxonomy.
| # | Provider |
|---|---|
| 1 | Michael Stack, MD PHDIndianapolis, IN |
| 2 | Shyh-Ching Lo, M.D.Washington, DC |
| 3 | Barbara Schibly, M.D.Plymouth, MN |
| 4 | Christopher Mendias, PHD, ATCPhoenix, AZ |
| 5 | Charles Lee, PH.D.Boston, MA |
| 6 | Robert Zoble, MD, PHDTampa, FL |
| 7 | Anthony Szema, MDSouth Setauket, NY |
| 8 | Jacques Okonji, PH.D.Denver, CO |
| 9 | Timothy Bruya, MDSpokane, WA |
| 10 | Lars Osterberg, MDPalo Alto, CA |
| 11 | Daniel O'Connor, L.A.T., A.T.C.Houston, TX |
| 12 | Lester Salans, M.D.New York, NY |
| 13 | Andrea Thelen, B.S, M.A.Saint Paul, MN |
| 14 | Floyd Sallee, M.D.Charleston, SC |
| 15 | Lauri EakinsSaint Paul, MN |
| 16 | Anna Likos, M.D.Atlanta, GA |
| 17 | Robert Kern, PHDLos Angeles, CA |
| 18 | Bethany MundisBaltimore, MD |
Related Specialties
Adjacent specialties in the NUCC Health Care Provider Taxonomy - same Specialist category.
Frequently Asked Questions
How should I read Research Study Specialist's mid-pack national roster?
How does Research Study 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.