CNAE 8640-2/08 · Rio de Janeiro
Serviços de diagnóstico por registro gráfico - ecg, eeg e outros exames análogos in Rio de Janeiro
132 active companies are headquartered in Rio de Janeiro with this CNAE as their main activity. They represent 12.8% of Brazil's active companies with the same main activity.
Source: Receita Federal, CNPJ Open Data · October 2026 publication
The same activity in Brazil 1,031
What this list shows
We count each active company once, by its head office in this state and this CNAE as its main activity. Branches and secondary activities are excluded from this scope. The total describes the registry, not market revenue or company quality.
- Companies in Rio de Janeiro
- 132
- 12.8% of Brazil's
- Of every 100 companies in Rio de Janeiro
- 0.0
- do this activity
- Among Brazil's federative units
- 3rd
- by companies in this activity
Active companies in Rio de Janeiro
More active establishments and higher registered capital first. This order is not a quality assessment or recommendation. · page 1 of 5- PREVTOTAL LABORATORIO DE IMAGEM LTDARio de Janeiro (RJ)
- SAMEC SERVICOS DE ASSISTENCIA MEDICA E EXAMES COMPLEMENTARES LTDARio de Janeiro (RJ)
- NEUROFISIOLOGIA DR SERGIO SZKLARZ LTDA.Rio de Janeiro (RJ)
- NEUROBARRA SERVICOS MEDICOS LTDA.Rio de Janeiro (RJ)
- CENTRO MEDICO DOM WALMOR LTDANova Iguaçu (RJ)
- MALFEI ATIVIDADES DIAGNOSTICA E TERAPEUTICA LTDARio de Janeiro (RJ)
- ABC ASSISTENCIA MEDICA DREAM CARE SERVICOS MEDICOS HOSPITALARES LTDARio de Janeiro (RJ)
- LABORATORIO DE ESTUDO DOS DISTURBIOS DO SONO LTDARio de Janeiro (RJ)
- TELECLINIC ONLINE SERVICOS MEDICOS LTDARio de Janeiro (RJ)
- CLINICA E IMAGEM DIAGNOSTICA FERREIRA LTDAMaricá (RJ)
- SOLUS SOLUCAO EM METODOS GRAFICOS LTDARio de Janeiro (RJ)
- ERGOSCAN SERVICOS MEDICOS LTDARio de Janeiro (RJ)
- CLINICA SELF LTDAResende (RJ)
- CARDIOBEDA SERVICOS MEDICOS LTDA.Campos dos Goytacazes (RJ)
- WILLIAM LINS LTDAMesquita (RJ)
- EMPRESARIAL SERVICO DE SAUDE LTDARio de Janeiro (RJ)
- EMPRESARIAL OCUPACIONAL LTDARio de Janeiro (RJ)
- MED-SAUDE DIAGNOSTICO LTDASão João da Barra (RJ)
- CENTRO MEDICO SANTA MARIA LTDASão Pedro da Aldeia (RJ)
- VITA MACAE EXAMES MEDICOS COMPLEMENTARES LTDAMacaé (RJ)
- MARCOS A DA SILVA SANTOS SERVICOS DE DIAGNOSTICO LTDABelford Roxo (RJ)
- SEMIOTICA SERVICOS MEDICOS DE INVESTIGACAO DIAGNOSTICA E TRATAMENTO LTDATeresópolis (RJ)
- ELETROCLIN DE CAMPOS CLINICA DE ELETROFISIOLOGIA LTDACampos dos Goytacazes (RJ)
- CENTRO DE MEDICINA DIAGNOSTICA RIO DE JANEIRO LTDA.Nova Iguaçu (RJ)
- R. C. GUERREIRO CLINICA DE CARDIOLOGIA LTDARio de Janeiro (RJ)
- CARDIOCLIN SAUDE E SERVICOS MEDICOS LTDARio de Janeiro (RJ)
- MEDWORK ASSESSORIA E CONSULTORIA LTDACabo Frio (RJ)
- ATUAL NOVA CLIN LTDAItaguaí (RJ)
- J M PARAVIDINO DE SOUZA LTDACampos dos Goytacazes (RJ)
- LABORMED MEDICINA OCUPACIONAL E DIAGNOSTICANova Friburgo (RJ)
List limited to 132 companies, 30 per page. Looking for a specific company? Search by name or CNPJ.
How to assess a company's data
When you open a company's record, use these guides to check the data and understand what each field can establish.
- How to look up a CNPJ
Check identifiers, dates and registry fields against official sources.
- What an active CNPJ means
Active status does not show that a company is debt-free, licensed or able to operate.
- How to read partner and administrator records
Understand QSA roles and the limits on ownership and representation information.
How much the activity weighs
of every 100 active companies, how many do this activity
- Rio de Janeiro0.0
- Brazil0.0
In Rio de Janeiro, the activity weighs 1.6 times what it does in Brazil.
Rio de Janeiro's cities with the most companies in this activity
active companies and each city's share of the state
- 1 Rio de Janeiro 50.8% 67
- 2 Macaé 5.3% 7
- 3 Niterói 5.3% 7
- 4 Campos dos Goytacazes 4.5% 6
- 5 Itaperuna 3.0% 4
- 6 Petrópolis 3.0% 4
- 7 Resende 3.0% 4
- 8 Duque de Caxias 2.3% 3
- 9 Nova Friburgo 2.3% 3
- 10 Nova Iguaçu 2.3% 3
16 more cities
- 11 São Gonçalo 3
- 12 Cabo Frio 2
- 13 Cordeiro 2
- 14 Maricá 2
- 15 Teresópolis 2
- 16 Três Rios 2
- 17 Valença 2
- 18 Mesquita 1
- 19 Belford Roxo 1
- 20 Angra dos Reis 1
- 21 Itaguaí 1
- 22 Natividade 1
- 23 São João da Barra 1
- 24 São João de Meriti 1
- 25 São Pedro da Aldeia 1
- 26 Volta Redonda 1
Class 8640-2 in Rio de Janeiro
atividades de serviços de complementação diagnóstica e terapêutica, by subclass| Subclass | Active |
|---|---|
| 8640-2/01 Laboratórios de anatomia patológica e citológica | 129 |
| 8640-2/02 Laboratórios clínicos | 1,189 |
| 8640-2/03 Serviços de diálise e nefrologia | 104 |
| 8640-2/04 Serviços de tomografia | 591 |
| 8640-2/05 Serviços de diagnóstico por imagem com uso de radiação ionizante, exceto tomografia | 1,023 |
| 8640-2/06 Serviços de ressonância magnética | 56 |
| 8640-2/07 Serviços de diagnóstico por imagem sem uso de radiação ionizante, exceto ressonância magnética | 447 |
| 8640-2/08 Serviços de diagnóstico por registro gráfico - ecg, eeg e outros exames análogos · this one | 132 |
| 8640-2/09 Serviços de diagnóstico por métodos ópticos - endoscopia e outros exames análogos | 97 |
| 8640-2/10 Serviços de quimioterapia | 32 |
| 8640-2/11 Serviços de radioterapia | 40 |
| 8640-2/12 Serviços de hemoterapia | 22 |
| 8640-2/13 Serviços de litotripcia | 0 |
| 8640-2/14 Serviços de bancos de células e tecidos humanos | 2 |
| 8640-2/99 Atividades de serviços de complementação diagnóstica e terapêutica não especificadas anteriormente | 394 |
Close to this: 8640-2/99 · Atividades de serviços de complementação diagnóstica e terapêutica não especificadas anteriormente, 394 companies in Rio de Janeiro.
What activity 8640-2/08 is
- Os serviços de diagnóstico por registro gráfico - ECG, EEG, polissonografia, audiometria e outros tipos de serviços de diagnóstico por registro gráfico
Frequently asked questions
How many companies have main CNAE 8640-2/08 in Rio de Janeiro?
132 active companies have CNAE 8640-2/08 as their main activity in Rio de Janeiro, according to the Receita Federal's October 2026 publication. That is 0.0 of every 100 companies there, against 0.0 in Brazil.
Which of Rio de Janeiro's cities has the most companies in this activity?
Rio de Janeiro, with 67, 50.8% of the state's companies in this activity.
Why can this total differ from the companies operating in this state?
This scope counts active companies by their head office and registered main activity. A company may operate in this state through a branch or carry out the activity as a secondary activity and be excluded from the count. The registered address and CNAE do not establish every operating location or service.
Does active status mean a company is qualified for a contract?
No. Active status describes the Receita Federal registration. It does not establish tax compliance, creditworthiness, licences, ability to fulfil a contract or quality. Check the relevant official documents and the contract's requirements.
How we count
Active companies with this as their main activity, counted by head office in Rio de Janeiro.