Single Specialty Group

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

NUCC 193400000X · Single Specialty

24 CMS NPPES-registered providers across 16 states · 639th of 690 specialties by headcount.

Providers

CMS NPPES-registered

States

with ≥1 NPI

New York

Top state

3 providers

$874

Open Pay avg

288th of 551 specialties

Where this specialty sits in the corpus

Single Specialty Group ranks 639th of 690 NUCC specialties by CMS NPPES headcount (0% of all registered NPIs), densest in New York.

24
NPPES providers in specialty: 639th
of 690 specialties: 729
state-share HHI: 54.2%
Part D prescriber share

6 states hold half of this specialty's national roster; 100% of the Single Specialty category.

Taxonomy fingerprint

Single Specialty Group (NUCC 193400000X; 54.2% Part D prescribers (13 of 24); avg 6,994 Part D claims/prescriber (6th of 572); Open Payments avg $874/physician (288th of 551; 12 paid, $10K total); state-share HHI 729; next-larger headcount neighbor Blood Banking Specialist/Technologist (+1); next-smaller Molecular Genetic Pathology (Medical Genetics) Physician (-2)).

Next larger: Blood Banking Specialist/Technologist (25) Next smaller: Molecular Genetic Pathology (Medical Genetics) Physician (22)

Which states have the most providers?

#	State	Providers	% of specialty
1	New York	3	12.5%
2	Florida	2	8.3%
3	Indiana	2	8.3%
4	Massachusetts	2	8.3%
5	Maryland	2	8.3%
6	Missouri	2	8.3%
7	Texas	2	8.3%
8	Colorado	1	4.2%

Sample Single Specialty Group NPIs

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

#	Provider	State
1	Gregory Palmer, DPMAiken, SC	South Carolina
2	Jorge Andrade, MDFall River, MA	Massachusetts
3	Xiao-Chun Sharon Yang, MDSilver Spring, MD	Maryland
4	Suhail Khadra, MDMunster, IN	Indiana
5	Salimah Dhanani, MDBremerton, WA	Washington
6	Steven Zeiler, MDWheat Ridge, CO	Colorado
7	William Sugarmann, M.D.Somerville, NJ	New Jersey
8	James Hayes, MDRichmond, IN	Indiana
9	Dermot Jinks, D.C.Peabody, MA	Massachusetts
10	Vivian Giudice, MDAlbuquerque, NM	New Mexico
11	Murali Krishna Maddipati, M.D.,Marianna, FL	Florida
12	Raya Massoud, M.D.Frederick, MD	Maryland

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Frequently Asked Questions

Why is Single Specialty Group a thin NUCC code in NPPES?

Only 24 NPIs list Single Specialty Group as primary taxonomy across 16 states (peak New York, 3). That is 639th 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 Single Specialty Group NPIs in Open Payments look unusual?

CMS Open Payments 2024 lists 12 paid Single Specialty Group physicians totaling $10K (480 payments; average $874, 288th 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 Single Specialty Group NPIs, 13 appear in the Medicare Part D Prescriber PUF (average 6,994 claims and $913K drug cost per prescriber; 6th 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.