Key Opinion Leader (KOL) Panel Statistics 2026 by Country and Specialty

Name: Global Vox Populi Key opinion leader (KOL) panel statistics 2026
Creator: Global Vox Populi

These statistics describe the Global Vox Populi key opinion leader (KOL) panel: senior physicians and medical experts who shape clinical practice in their field, by country and by 79 specialties.

Updated October 2026169 countriesFree to citeCSV download

Source: Global Vox Populi panel coverage records · Updated October 2026 · 169 countries

KOLs190,120key opinion leaders

Countries169with panel coverage

Largest countryChina8,665 (4.6%)

Largest regionWestern Europe21.1% of the panel

Where the key opinion leader (KOL) panel is

Panel size by country. Hover for figures, click a country to see its breakdown.

Key statistics

The Global Vox Populi key opinion leader (KOL) panel has 190,120 key opinion leaders in 169 countries (October 2026).
China has the most (8,665, 4.6% of the total), followed by the United States, Germany, India and Russia. Together the top five countries hold 17.3%.
By region, Western Europe is the largest (21.1%), followed by Latin America & Caribbean (14.6%) and Central & Eastern Europe (13.3%).
The median country panel has 520 key opinion leaders; 57 countries have 1,000 or more.
By specialty, the largest group is General / Family Medicine (6.0%), then Internal Medicine (5.2%). Its share is highest in Ethiopia (19.8%).
Across countries with both panels, there is roughly one KOL for every 14 panel physicians.

Countries with the most key opinion leaders

Top 20 countries

Panel size

China8,6654.6%

United States7,7074.1%

Germany5,5992.9%

India5,5502.9%

Russia5,3442.8%

Japan5,1842.7%

Brazil5,0762.7%

Italy4,5452.4%

France4,4252.3%

Spain4,4162.3%

United Kingdom4,2902.3%

Mexico4,0942.2%

Poland3,4401.8%

Indonesia3,3371.8%

Turkey3,3001.7%

South Korea3,2651.7%

Argentina3,2611.7%

Pakistan3,0441.6%

Canada2,9361.5%

Australia2,9261.5%

By region

Region	KOLs	Share	Countries
Western Europe	40,123	21.1%	23
Latin America & Caribbean	27,712	14.6%	26
Central & Eastern Europe	25,293	13.3%	22
Middle East & North Africa	22,978	12.1%	20
East Asia	17,634	9.3%	4
Southeast Asia	13,862	7.3%	11
South Asia	12,967	6.8%	7
North America	10,643	5.6%	2
Sub-Saharan Africa	9,102	4.8%	44
Central Asia	6,072	3.2%	5
Oceania	3,734	2.0%	5

Breakdown of the key opinion leader (KOL) panel

Showing

Specialty (top 25 of 79)

All countries

General / Family Medicine11,4386.0%

Internal Medicine9,8835.2%

Pediatrics8,8474.7%

Obstetrics & Gynecology8,1704.3%

General Surgery8,0824.3%

Anesthesiology7,1413.8%

Dentistry & Oral Specialties6,6263.5%

Psychiatry5,9993.2%

Cardiology5,9723.1%

Radiology / Diagnostic Imaging5,9573.1%

Pathology (Anatomical/Clinical)5,1522.7%

Public Health / Community Medicine5,1322.7%

Ophthalmology5,1272.7%

Orthopedic Surgery5,1202.7%

Emergency Medicine5,0972.7%

Otorhinolaryngology (ENT)4,6052.4%

Dermatology4,5882.4%

Neurology4,0362.1%

Urology3,7882.0%

Geriatric Medicine2,9211.5%

Gastroenterology2,9201.5%

Pulmonology (Respiratory)2,9151.5%

Endocrinology / Diabetology2,4161.3%

Medical Oncology2,4101.3%

Critical Care / Intensive Care2,0861.1%

Compare countries

Pick up to five countries to compare their key opinion leader (KOL) panel side by side.

KOLs by country: full table

Rank	Country	Region	KOLs	Share
1	China	East Asia	8,665	4.56%
2	United States	North America	7,707	4.05%
3	Germany	Western Europe	5,599	2.94%
4	India	South Asia	5,550	2.92%
5	Russia	Central & Eastern Europe	5,344	2.81%
6	Japan	East Asia	5,184	2.73%
7	Brazil	Latin America & Caribbean	5,076	2.67%
8	Italy	Western Europe	4,545	2.39%
9	France	Western Europe	4,425	2.33%
10	Spain	Western Europe	4,416	2.32%
11	United Kingdom	Western Europe	4,290	2.26%
12	Mexico	Latin America & Caribbean	4,094	2.15%
13	Poland	Central & Eastern Europe	3,440	1.81%
14	Indonesia	Southeast Asia	3,337	1.76%
15	Turkey	Middle East & North Africa	3,300	1.74%
16	South Korea	East Asia	3,265	1.72%
17	Argentina	Latin America & Caribbean	3,261	1.72%
18	Pakistan	South Asia	3,044	1.60%
19	Canada	North America	2,936	1.54%
20	Australia	Oceania	2,926	1.54%
21	Saudi Arabia	Middle East & North Africa	2,780	1.46%
22	Colombia	Latin America & Caribbean	2,739	1.44%
23	Iran	Middle East & North Africa	2,594	1.36%
24	Bangladesh	South Asia	2,431	1.28%
25	Ukraine	Central & Eastern Europe	2,372	1.25%
26	Sweden	Western Europe	2,256	1.19%
27	Philippines	Southeast Asia	2,196	1.16%
28	Kazakhstan	Central Asia	2,158	1.14%
29	Malaysia	Southeast Asia	2,129	1.12%
30	Netherlands	Western Europe	2,120	1.12%
31	Egypt	Middle East & North Africa	2,099	1.10%
32	Nigeria	Sub-Saharan Africa	2,093	1.10%
33	Greece	Western Europe	2,079	1.09%
34	Uzbekistan	Central Asia	2,078	1.09%
35	Vietnam	Southeast Asia	2,025	1.07%
36	Algeria	Middle East & North Africa	1,978	1.04%
37	Romania	Central & Eastern Europe	1,956	1.03%
38	Thailand	Southeast Asia	1,947	1.02%
39	Hungary	Central & Eastern Europe	1,914	1.01%
40	Portugal	Western Europe	1,898	1.00%
41	Chile	Latin America & Caribbean	1,815	0.95%
42	Austria	Western Europe	1,687	0.89%
43	South Africa	Sub-Saharan Africa	1,557	0.82%
44	Peru	Latin America & Caribbean	1,543	0.81%
45	Venezuela	Latin America & Caribbean	1,540	0.81%
46	Czechia	Central & Eastern Europe	1,526	0.80%
47	Iraq	Middle East & North Africa	1,465	0.77%
48	Belarus	Central & Eastern Europe	1,392	0.73%
49	Switzerland	Western Europe	1,390	0.73%
50	Ecuador	Latin America & Caribbean	1,350	0.71%
51	Myanmar	Southeast Asia	1,323	0.70%
52	Belgium	Western Europe	1,312	0.69%
53	Israel	Middle East & North Africa	1,277	0.67%
54	Azerbaijan	Central & Eastern Europe	1,162	0.61%
55	Norway	Western Europe	1,078	0.57%
56	Jordan	Middle East & North Africa	1,052	0.55%
57	Bulgaria	Central & Eastern Europe	1,005	0.53%
58	Syria	Middle East & North Africa	999	0.53%
59	Finland	Western Europe	994	0.52%
60	Morocco	Middle East & North Africa	983	0.52%
61	Denmark	Western Europe	954	0.50%
62	Sri Lanka	South Asia	947	0.50%
63	Nepal	South Asia	945	0.50%
64	UAE	Middle East & North Africa	939	0.49%
65	Zambia	Sub-Saharan Africa	882	0.46%
66	Guatemala	Latin America & Caribbean	829	0.44%
67	Serbia	Central & Eastern Europe	806	0.42%
68	Slovakia	Central & Eastern Europe	781	0.41%
69	Bolivia	Latin America & Caribbean	760	0.40%
70	New Zealand	Oceania	754	0.40%
71	Georgia	Central & Eastern Europe	744	0.39%
72	Ireland	Western Europe	719	0.38%
73	Dominican Republic	Latin America & Caribbean	716	0.38%
74	El Salvador	Latin America & Caribbean	709	0.37%
75	Uruguay	Latin America & Caribbean	689	0.36%
76	Costa Rica	Latin America & Caribbean	682	0.36%
77	Tajikistan	Central Asia	663	0.35%
78	Tunisia	Middle East & North Africa	649	0.34%
79	Singapore	Southeast Asia	613	0.32%
80	Kyrgyzstan	Central Asia	611	0.32%
81	Libya	Middle East & North Africa	574	0.30%
82	Turkmenistan	Central Asia	562	0.30%
83	Ethiopia	Sub-Saharan Africa	546	0.29%
84	Croatia	Central & Eastern Europe	539	0.28%
85	Mongolia	East Asia	520	0.27%
86	Lithuania	Central & Eastern Europe	516	0.27%
87	Sudan	Sub-Saharan Africa	491	0.26%
88	Kuwait	Middle East & North Africa	468	0.25%
89	Nicaragua	Latin America & Caribbean	466	0.25%
90	Lebanon	Middle East & North Africa	459	0.24%
91	Yemen	Middle East & North Africa	412	0.22%
92	Paraguay	Latin America & Caribbean	381	0.20%
93	Kenya	Sub-Saharan Africa	345	0.18%
94	Oman	Middle East & North Africa	336	0.18%
95	Uganda	Sub-Saharan Africa	320	0.17%
96	Moldova	Central & Eastern Europe	319	0.17%
97	Panama	Latin America & Caribbean	296	0.16%
98	Angola	Sub-Saharan Africa	295	0.16%
99	Palestine	Middle East & North Africa	295	0.16%
100	Slovenia	Central & Eastern Europe	288	0.15%
101	DR Congo	Sub-Saharan Africa	278	0.15%
102	Bosnia and Herzegovina	Central & Eastern Europe	275	0.14%
103	Qatar	Middle East & North Africa	275	0.14%
104	Latvia	Central & Eastern Europe	256	0.13%
105	Trinidad and Tobago	Latin America & Caribbean	256	0.13%
106	North Macedonia	Central & Eastern Europe	244	0.13%
107	Madagascar	Sub-Saharan Africa	231	0.12%
108	Ghana	Sub-Saharan Africa	224	0.12%
109	Honduras	Latin America & Caribbean	194	0.10%
110	Albania	Central & Eastern Europe	183	0.10%
111	Cote d'Ivoire	Sub-Saharan Africa	175	0.09%
112	Cyprus	Western Europe	171	0.09%
113	Estonia	Central & Eastern Europe	171	0.09%
114	Tanzania	Sub-Saharan Africa	150	0.08%
115	Cameroon	Sub-Saharan Africa	139	0.07%
116	Jamaica	Latin America & Caribbean	132	0.07%
117	Mauritius	Sub-Saharan Africa	128	0.07%
118	Zimbabwe	Sub-Saharan Africa	126	0.07%
119	Guinea	Sub-Saharan Africa	123	0.06%
120	Cambodia	Southeast Asia	119	0.06%
121	Mali	Sub-Saharan Africa	113	0.06%
122	Mozambique	Sub-Saharan Africa	112	0.06%
123	Laos	Southeast Asia	108	0.06%
124	Haiti	Latin America & Caribbean	105	0.06%
125	Benin	Sub-Saharan Africa	78	0.04%
126	Burkina Faso	Sub-Saharan Africa	78	0.04%
127	Luxembourg	Western Europe	71	0.04%
128	Rwanda	Sub-Saharan Africa	71	0.04%
129	Montenegro	Central & Eastern Europe	60	0.03%
130	Senegal	Sub-Saharan Africa	59	0.03%
131	Iceland	Western Europe	56	0.03%
132	Gabon	Sub-Saharan Africa	54	0.03%
133	Malta	Western Europe	53	0.03%
134	Namibia	Sub-Saharan Africa	53	0.03%
135	Bahrain	Middle East & North Africa	44	0.02%
136	Chad	Sub-Saharan Africa	42	0.02%
137	Malawi	Sub-Saharan Africa	39	0.02%
138	Niger	Sub-Saharan Africa	39	0.02%
139	Timor-Leste	Southeast Asia	39	0.02%
140	Guyana	Latin America & Caribbean	37	0.02%
141	Maldives	South Asia	37	0.02%
142	Burundi	Sub-Saharan Africa	36	0.02%
143	Botswana	Sub-Saharan Africa	34	0.02%
144	Mauritania	Sub-Saharan Africa	34	0.02%
145	Togo	Sub-Saharan Africa	31	0.02%
146	Bahamas	Latin America & Caribbean	26	0.01%
147	Brunei	Southeast Asia	26	0.01%
148	Equatorial Guinea	Sub-Saharan Africa	26	0.01%
149	Fiji	Oceania	26	0.01%
150	Papua New Guinea	Oceania	26	0.01%
151	Sierra Leone	Sub-Saharan Africa	26	0.01%
152	Cabo Verde	Sub-Saharan Africa	20	0.01%
153	Belize	Latin America & Caribbean	13	0.01%
154	Bhutan	South Asia	13	0.01%
155	Central African Republic	Sub-Saharan Africa	13	0.01%
156	Gambia	Sub-Saharan Africa	7	0.00%
157	Guinea-Bissau	Sub-Saharan Africa	7	0.00%
158	Liberia	Sub-Saharan Africa	7	0.00%
159	Comoros	Sub-Saharan Africa	6	0.00%
160	Djibouti	Sub-Saharan Africa	6	0.00%
161	Monaco	Western Europe	6	0.00%
162	Eswatini	Sub-Saharan Africa	3	0.00%
163	San Marino	Western Europe	3	0.00%
164	Seychelles	Sub-Saharan Africa	3	0.00%
165	Lesotho	Sub-Saharan Africa	2	0.00%
166	Saint Kitts and Nevis	Latin America & Caribbean	2	0.00%
167	Samoa	Oceania	2	0.00%
168	Liechtenstein	Western Europe	1	0.00%
169	Saint Lucia	Latin America & Caribbean	1	0.00%

By specialty group

Specialty group	KOLs	Share
Primary & General	41,171	21.7%
Internal Medicine Subspecialties	26,860	14.1%
Surgical Specialties	18,720	9.8%
Diagnostic & Laboratory	17,983	9.5%
Acute, Peri-operative & Critical Care	15,149	8.0%
Nervous System & Mental Health	12,300	6.5%
Women's & Reproductive Health	10,898	5.7%
Public Health & Population	10,263	5.4%
Head, Neck & Sensory	9,732	5.1%
Other Recognized Fields	9,146	4.8%
Skin, Musculoskeletal & Rehab	8,302	4.4%
Pediatric Subspecialties	4,352	2.3%
Urinary & Renal	3,788	2.0%
Cancer Care	1,456	0.8%

All 79 specialties

Specialty	Group	KOLs	Share
General / Family Medicine	Primary & General	11,438	6.02%
Internal Medicine	Primary & General	9,883	5.20%
Pediatrics	Primary & General	8,847	4.65%
Obstetrics & Gynecology	Women's & Reproductive Health	8,170	4.30%
General Surgery	Primary & General	8,082	4.25%
Anesthesiology	Acute, Peri-operative & Critical Care	7,141	3.76%
Dentistry & Oral Specialties	Other Recognized Fields	6,626	3.49%
Psychiatry	Nervous System & Mental Health	5,999	3.16%
Cardiology	Internal Medicine Subspecialties	5,972	3.14%
Radiology / Diagnostic Imaging	Diagnostic & Laboratory	5,957	3.13%
Pathology (Anatomical/Clinical)	Diagnostic & Laboratory	5,152	2.71%
Public Health / Community Medicine	Public Health & Population	5,132	2.70%
Ophthalmology	Head, Neck & Sensory	5,127	2.70%
Orthopedic Surgery	Surgical Specialties	5,120	2.69%
Emergency Medicine	Acute, Peri-operative & Critical Care	5,097	2.68%
Otorhinolaryngology (ENT)	Head, Neck & Sensory	4,605	2.42%
Dermatology	Skin, Musculoskeletal & Rehab	4,588	2.41%
Neurology	Nervous System & Mental Health	4,036	2.12%
Urology	Urinary & Renal	3,788	1.99%
Geriatric Medicine	Primary & General	2,921	1.54%
Gastroenterology	Internal Medicine Subspecialties	2,920	1.54%
Pulmonology (Respiratory)	Internal Medicine Subspecialties	2,915	1.53%
Endocrinology / Diabetology	Internal Medicine Subspecialties	2,416	1.27%
Medical Oncology	Internal Medicine Subspecialties	2,410	1.27%
Critical Care / Intensive Care	Acute, Peri-operative & Critical Care	2,086	1.10%
Nephrology	Internal Medicine Subspecialties	2,077	1.09%
Physical Medicine & Rehabilitation	Skin, Musculoskeletal & Rehab	2,077	1.09%
Preventive Medicine	Public Health & Population	1,785	0.94%
Microbiology	Diagnostic & Laboratory	1,783	0.94%
Neonatology	Pediatric Subspecialties	1,782	0.94%
Infectious Diseases	Internal Medicine Subspecialties	1,774	0.93%
Hematology	Internal Medicine Subspecialties	1,470	0.77%
Rheumatology	Internal Medicine Subspecialties	1,465	0.77%
Plastic & Reconstructive Surgery	Surgical Specialties	1,461	0.77%
Clinical Biochemistry	Diagnostic & Laboratory	1,461	0.77%
Palliative Medicine	Other Recognized Fields	1,460	0.77%
Radiation Oncology / Radiotherapy	Cancer Care	1,456	0.77%
Occupational Medicine	Public Health & Population	1,456	0.77%
Neurosurgery	Surgical Specialties	1,304	0.69%
Vascular Surgery	Surgical Specialties	1,162	0.61%
Child & Adolescent Psychiatry	Nervous System & Mental Health	1,155	0.61%
Cardiothoracic Surgery	Surgical Specialties	1,154	0.61%
Transfusion Medicine	Diagnostic & Laboratory	1,150	0.60%
Oral & Maxillofacial Surgery	Surgical Specialties	1,147	0.60%
Clinical Immunology & Allergy	Internal Medicine Subspecialties	1,140	0.60%
Hepatology	Internal Medicine Subspecialties	1,019	0.54%
Pediatric Surgery	Surgical Specialties	1,015	0.53%
Surgical Oncology	Surgical Specialties	1,015	0.53%
Interventional Radiology	Diagnostic & Laboratory	1,015	0.53%
Forensic Medicine & Toxicology	Public Health & Population	1,010	0.53%
Trauma Surgery	Surgical Specialties	1,004	0.53%
Hepatobiliary / Upper GI Surgery	Surgical Specialties	829	0.44%
Addiction Medicine	Other Recognized Fields	829	0.44%
Nuclear Medicine	Diagnostic & Laboratory	825	0.43%
Pain Medicine	Acute, Peri-operative & Critical Care	825	0.43%
Colorectal Surgery	Surgical Specialties	820	0.43%
Sports & Exercise Medicine	Skin, Musculoskeletal & Rehab	820	0.43%
Venereology	Skin, Musculoskeletal & Rehab	817	0.43%
Reproductive Endocrinology & Infertility	Women's & Reproductive Health	812	0.43%
Maternal-Fetal Medicine	Women's & Reproductive Health	811	0.43%
Tropical Medicine	Public Health & Population	649	0.34%
Sleep Medicine	Internal Medicine Subspecialties	648	0.34%
Pediatric Cardiology	Pediatric Subspecialties	647	0.34%
Developmental Pediatrics	Pediatric Subspecialties	645	0.34%
Hand Surgery	Surgical Specialties	642	0.34%
Pediatric Neurology	Pediatric Subspecialties	641	0.34%
Clinical Neurophysiology	Nervous System & Mental Health	640	0.34%
Medical Genetics & Genomics	Diagnostic & Laboratory	640	0.34%
Breast Surgery	Surgical Specialties	637	0.34%
Pediatric Oncology / Hematology	Pediatric Subspecialties	637	0.34%
Gynecologic Oncology	Women's & Reproductive Health	635	0.33%
Clinical Pharmacology	Internal Medicine Subspecialties	634	0.33%
Transplant Surgery	Surgical Specialties	470	0.25%
Bariatric Surgery	Surgical Specialties	470	0.25%
Endocrine Surgery	Surgical Specialties	470	0.25%
Andrology	Women's & Reproductive Health	470	0.25%
Forensic Psychiatry	Nervous System & Mental Health	470	0.25%
Aerospace / Aviation Medicine	Public Health & Population	231	0.12%
Hyperbaric & Undersea Medicine	Other Recognized Fields	231	0.12%

Definitions

Key opinion leader: A physician or medical expert with recognised influence in their specialty, for example through research, guideline work, teaching or society roles.
Specialty: The KOL's primary specialty. Each KOL is counted once.

About this data

Figures come from Global Vox Populi's proprietary panel coverage records and show panel membership as of October 2026. They describe the people available on the Global Vox Populi panel, not the total population of key opinion leaders in each country. Countries without current panel coverage are not listed. Totals across different Global Vox Populi panels should not be added together, because some people belong to more than one panel.

For live panel coverage and feasibility for a specific study, see the Key opinion leader (KOL) panel explorer or use the survey feasibility calculator.

Frequently asked questions

How many key opinion leaders are on the Global Vox Populi panel?

190,120 key opinion leaders across 169 countries, as of October 2026.

Which country has the most key opinion leaders on the panel?

China (8,665), followed by the United States (7,707) and Germany (5,599).

How many key opinion leaders are on the panel in the United States?

7,707, ranking 2 of 169 countries (4.05% of the panel).

How many key opinion leaders are on the panel in the United Kingdom?

4,290, ranking 11 of 169 countries (2.26% of the panel).

How many key opinion leaders are on the panel in Germany?

5,599, ranking 3 of 169 countries (2.94% of the panel).

How many key opinion leaders are on the panel in Japan?

5,184, ranking 6 of 169 countries (2.73% of the panel).

How many key opinion leaders are on the panel in India?

5,550, ranking 4 of 169 countries (2.92% of the panel).

How many key opinion leaders are on the panel in Brazil?

5,076, ranking 7 of 169 countries (2.67% of the panel).

Can I use these statistics in my article or report?

Yes. Please credit "Global Vox Populi, Key opinion leader (KOL) panel statistics, October 2026" and link to this page.

How often are these figures updated?

They are taken from Global Vox Populi's panel coverage records and refreshed periodically. The date at the top of the page shows when they were last updated.

Cite or link to this data

These statistics are free to use in articles, reports and presentations with a credit to Global Vox Populi and a link to this page.

Global Vox Populi (2026). Key opinion leader (KOL) panel statistics 2026. October 2026. https://globalvoxpopuli.com/statistics/kol-panel-statistics/

<a href="https://globalvoxpopuli.com/statistics/kol-panel-statistics/">Key opinion leader (KOL) panel statistics 2026</a> (Global Vox Populi, October 2026)

Run research with this audience

Global Vox Populi recruits from these proprietary panels for quantitative surveys, in-depth interviews and focus groups. ISO 9001, ISO 20252 and ISO/IEC 27001 certified and HIPAA compliant, following ESOMAR, Insights Association and BHBIA guidelines.

Request a feasibility check

More panel statistics

All panel statistics · Panel coverage by country