Skip to main content
med. Markus Oeyen

Internist Gastroenterologe Bonn

med. Markus Oeyen

4 years of experience

8,022+
Patients seen
4
Years in practice
9
Publications

PROFILE SUMMARY

About Dr. med. Markus Oeyen at a glance

Dr. med. Markus Oeyen is an Internist Gastroenterologe practitioner based in Bonn, Germany, practising at Charité-Universitätsmedizin Berlin Teaching Hospital. Procedures focus on gp consultation, annual physical exam, vaccination administration, minor procedure (skin). Educated at Charité-Universitätsmedizin Berlin (MD, 2018). Serves patients in Bonn, Germany and the surrounding area.

About

“Evidence-based care tailored to each patient — taking the time to explain options and shared decisions.”

— med. Markus Oeyen

Education & training

  1. 2012–2018 MD · Medicine and Surgery
    Charité-Universitätsmedizin Berlin, bonn (DE)
  2. 2018–2022 Residency · Internist Gastroenterologe
    Universität Hamburg, bonn (DE)
  3. 2022–2023 Fellowship · Subspecialty training
    Royal Marsden London, UK

Career & appointments

  1. 2022-09–2023-08 Junior consultant
    Charité-Universitätsmedizin Berlin Teaching Hospital — Internist Gastroenterologe

Licenses & insurance

Medical licenses

DE — Bundesärztekammer
#DE-127405 active · expires 2028-12-31

Board certifications

European Board of Internist Gastroenterologe
#EB-01765EF6 · issued 2023 · renewal 2033
Malpractice insurance: HDI Global · 3,000,000 EUR coverage · No claims on file

Procedures performed

ProcedureCodeLifetime count
GP consultation 99213 782
Annual physical exam 99395 552
Vaccination administration 90471 1,936
Minor procedure (skin) 17110 2,479

Services & pricing

ServiceDurationModalityPrice
New patient consultation (60m) 60 min in_clinic|telemed 180.00 EUR
Follow-up consultation (30m) 30 min in_clinic|telemed|phone 90.00 EUR
Vaccination administration 90 min in_clinic 450.00 EUR
Minor procedure (skin) 60 min in_clinic 180.00 EUR

Office, team & in practice

Dr. med. Markus Oeyen
HEADSHOT
Dr. med. Markus Oeyen in consultation
IN OFFICE
Dr. med. Markus Oeyen with the team
WITH TEAM
Dr. med. Markus Oeyen at a conference
CONFERENCE

Videos

introduction · 77s
Meet Dr. med. Markus Oeyen

Research & publications

h-index: 12 · i10: 12

  1. European registry analysis of Internist Gastroenterologe outcomes
    Dr. med. Markus Oeyen, et al. · European Journal of Medicine, 2025
    DOI: 10.3531/euroclin.2025.0 · PMID: 35084210 · cited by 182
  2. Outcomes of Internist Gastroenterologe in adults — a multi-centre cohort
    Dr. med. Markus Oeyen, et al. · European Journal of Medicine, 2024
    DOI: 10.5860/euroclin.2024.1 · PMID: 32898585 · cited by 108
  3. European registry analysis of Internist Gastroenterologe outcomes
    Dr. med. Markus Oeyen, et al. · European Journal of Medicine, 2023
    DOI: 10.6918/euroclin.2023.2 · PMID: 35108915 · cited by 34

Invited talks

  • Practical updates in Internist Gastroenterologe European Annual Congress (Internist Gastroenterologe) · Vienna · 2024 · invited
  • Single-centre experience in Internist Gastroenterologe National Society Meeting · bonn · 2023 · oral abstract

Awards & memberships

Awards

  • 🏆 Top-rated Internist Gastroenterologe — bonn · EuroClinics Patient Choice · 2025 · regional

Society memberships

  • WONCA Europe — Family Doctors — Member · Since 2023
  • national college of family doctors — Member · Since 2023
  • European Union of Medical Specialists (UEMS) — Member · Since 2023

Articles by this doctor

  • Patient education Patient guide to Internist Gastroenterologe
  • Awareness When should you see a internist gastroenterologe?

For international patients

Coordinator
Patient liaison · jameda.markus.oeyen@euroclinics.example

Location

1 tag

Patient reviews

Share your experience — help other patients find the right doctor. Write a review →
20 – 4,000 characters

Submissions are moderated and may take 24-72 h to appear publicly. Identifying patient information should not be included.

Recent reviews

  • ★★★★★ ✓ Verified
    Very thorough first visit — explained every step. Booking was easy and the staff were welcoming.
    Anna B.
  • ★★★★★ ✓ Verified
    Took time to listen and reviewed all my previous results. I would absolutely recommend.
    Marco V.
  • ★★★★☆ ✓ Verified
    Professional and knowledgeable. Wait on the day was a bit long, otherwise excellent.
    Helena F.

SPECIALTIES & PROCEDURES

Dr. med. Markus Oeyen's Areas of Specialty

Each specialty below reflects the conditions and procedures Dr. med. Markus Oeyen treats, with the size of the national pool of Germany doctors offering the same care.

Internist Gastroenterologe

Dr. med. Markus Oeyen is one of 1,535 internist gastroenterologe doctors indexed in Germany. Browse internist gastroenterologe doctors in Germany →

LOCAL CARE CONTEXT

Why local healthcare in Bonn matters

Medical practice in Germany is governed by country-specific licensing, professional standards, and patient-safety regulations. Practitioners listed here are registered with the relevant Germany medical authority and operate within national rules on scope of practice, prescribing rights, and continuing professional development. Care delivered in Bonn carries the additional benefits of local language support, in-person follow-up, and direct coordination with regional hospitals and labs. A verified profile means EuroClinics has cross-checked the practitioner or clinic against an official source (national medical register, public licence database, or the practitioner themselves), and that the data shown here matches that source as of the last verification date above.

Looking for additional providers? all doctors in Bonn or all doctors in Germany.

Frequently asked questions

Quick answers to the questions patients ask most. The same answers are surfaced to AI assistants via structured data.

  • What does Dr. med. Markus Oeyen specialise in?

    Dr. med. Markus Oeyen specialises in Internist Gastroenterologe in bonn, DE.

  • What conditions does Dr. med. Markus Oeyen treat?

    Dr. med. Markus Oeyen treats conditions within Internist Gastroenterologe. View the full conditions-treated list on the profile.

  • Where does Dr. med. Markus Oeyen practise?

    Dr. med. Markus Oeyen practises in bonn, DE. The profile page lists all practice addresses, phone numbers, and clinic affiliations.

  • How do I book an appointment with Dr. med. Markus Oeyen?

    Use the "Request a booking" button on the profile to send an appointment request. Most appointments are confirmed within 24 hours; many slots are bookable instantly.

Similar specialists

Browse all →