NexusMed facilities

Clinical data, precision technology, plasmapheresis and cellular medicine in the service of health that is more preventive, more personalized and more intelligent.

Our clinical practice

Advanced medicine. Individual care.

Four connected areas. One methodology: clinical assessment, a personalized protocol and follow-up.

Indications, available evidence and regulatory status are reviewed with each patient. Individual results may vary.

All protocols

In-house technology · International expertise

The science behind every decision.

NexusMed brings clinical practice and technology development together with Apheresis Technology. GEMMA is part of this therapeutic apheresis expertise.

Explore GEMMA technology
Reclining patient, two professionals and an apheresis circuit in a Boston room
Real clinical practice · Boston

Dr. Gerardo Zumbana

Medical Director. Therapeutic apheresis specialist and co-founder of Apheresis Technology.

Prof. Valery Voinov

Scientific authority in therapeutic apheresis, Pavlov University. Co-author of the plasmapheresis book with Dr. Zumbana.

International expertise

International medical training, scientific collaboration and clinical coordination in six languages.

Team and credentials
years of experience
40+
in therapeutic apheresis
clinical centers
850+
Apheresis Technology · 10+ countries
scientific papers
360+
Prof. Valery Voinov
patents and inventions
25
in apheresis technology
languages of care
6
ES · EN · RU · FR · IT · DE

Medical team

Clinical experience. International perspective.

Meet the full team
Portrait of Dr. Gerardo G. Zumbana L., Medical Director at NexusMed

Medical Director

Dr. Gerardo G. Zumbana L.

Postgraduate training at Pavlov University. Apheresis Technology co-founder and plasmapheresis author.

Medical background

Specialist in therapeutic apheresis. Postgraduate training at Pavlov First Saint Petersburg State Medical University. Co-founder of Apheresis Technology. Author of the first book on plasmapheresis published in Latin America. 25+ years of specialized clinical practice.

Portrait of Dra. Irina Podaneva, Gynecology at NexusMed

Gynecology

Dr. Irina Podaneva

Trained at Pavlov University. Gynecology, hormonal health and ISUOG membership.

Medical background

Gynecologist trained at Akademik Pavlov State Medical University, Russia. Member of the International Society of Ultrasound in Obstetrics and Gynecology. Specialist in female hormonal health, climacteric and fertility.

Portrait of Dra. Kristina Zumbana, International Coordination · New York at NexusMed

International Coordination · New York

Dr. Kristina Zumbana

Clinical coordination from New York. Training at PUCE, Grenoble Alpes and EPFL.

Medical background

Coordinates care for international patients from New York. Medical training at PUCE, with studies at Université Grenoble Alpes and École Polytechnique Fédérale de Lausanne. Speaks five languages.

Scientific authority

Prof. Valery Alexandrovich Voinov

Professor and Head of the Therapeutic Apheresis Department at Pavlov University, Saint Petersburg. Author of 360+ scientific papers and 25 inventions and patents.

Scientific background
Dr. Gerardo Zumbana presenting on stage at an international regenerative medicine congress

International scientific participation

From clinical practice to scientific exchange.

Dr. Gerardo Zumbana · Regene Global & ISSCA. Plasma exchange and plasmapheresis in regenerative medicine and longevity.

Preventive medicine and longevity

Measure first. Intervene with precision.

80+ biomarkers, clinical assessment and follow-up. A longevity approach connecting diagnostics, plasmapheresis and regenerative medicine.

Explore longevity

Complementary IV therapies

Intravenous formulations under medical indication, as part of an individualized plan.

View IV therapies

Clinical information

A closer look at your care.

Clinical indications, care pathways and explanations from the medical team.

Clinical conditions and indications

Clinical Conditions

Clinical areas where our protocols carry the strongest evidence.

NexusMed focuses its practice on conditions where the combination of therapeutic plasmapheresis, cell therapy and regenerative medicine has documented clinical support. We don't treat everything. We treat where we can generate measurable impact.

01 · Clinical area

Autoimmune diseases

Therapeutic plasmapheresis physically removes the pathological antibodies that attack healthy tissue. Recognized by ASFA as a first-line treatment for multiple autoimmune conditions.

Conditions we treat

  • Systemic lupus erythematosus
  • Rheumatoid arthritis
  • Systemic vasculitis
  • Scleroderma
  • Antiphospholipid syndrome
  • Behçet's disease
  • Other immune-mediated conditions
02 · Clinical area

Neurological diseases

Several autoimmune neurological conditions carry an ASFA category I indication for plasmapheresis. Our protocols are designed to remove the autoantibodies responsible for neurological damage.

Conditions we treat

  • Guillain-Barré syndrome
  • Myasthenia gravis
  • Multiple sclerosis (selected forms)
  • Chronic inflammatory demyelinating polyneuropathy
  • Autoimmune encephalitis
  • Neuromyelitis optica
03 · Clinical area

Liver diseases

Apheresis with liver-support systems is indicated in conditions where detoxification function is compromised. Our technology allows us to act directly on the circulating compounds the liver cannot process, in coordination with the patient's treating hepatologist.

Clinical conditions treated

  • Acute liver failure
  • Decompensated chronic liver failure
  • Hepatic encephalopathy
  • Refractory familial hypercholesterolemia
  • Severe hypertriglyceridemia
  • Hepatorenal syndromes
  • Advanced non-alcoholic steatohepatitis
04 · Clinical area

Advanced rheumatology

Therapeutic apheresis and regenerative protocols are indicated for patients with rheumatologic disease refractory to biologic therapies, immunomodulators or conventional immunosuppressive regimens.

Clinical conditions treated

  • Severe or refractory rheumatoid arthritis
  • Ankylosing spondylitis
  • Sjögren's syndrome
  • Polymyalgia rheumatica
  • Fibromyalgia with systemic inflammatory component
  • Mixed connective tissue disease
  • Other chronic rheumatologic diseases
05 · Clinical area

Complementary oncology support

Our practice in oncology is strictly complementary. We do not replace chemotherapy, radiotherapy or hematologic regimens. We always work in coordination with the patient's treating oncologist.

Support procedures

  • Apheresis for specific complications
  • Immune support during chemotherapy
  • Coordinated management of side effects
  • Post-treatment regenerative protocols
  • Clinical support for quality of life
06 · Clinical area

Cardiovascular and metabolic health

Selective apheresis can directly remove pathological lipoproteins when conventional medication fails to reach clinical targets. We also apply regenerative protocols in selected patients.

Conditions we treat

  • Familial hypercholesterolemia
  • Severe hypertriglyceridemia
  • Advanced atherosclerosis
  • Elevated cardiovascular risk
  • Integrated metabolic optimization
07 · Clinical area

Longevity and preventive medicine

For patients without active disease seeking long-term health optimization. A comprehensive program with expanded biomarkers, biological age, genetic analysis and personalized regenerative protocols.

Areas of optimization

  • Silent chronic inflammation
  • Metabolic health
  • Hormonal balance
  • Immune function
  • Preventive cardiovascular health
  • Cognitive optimization
08 · Clinical area

Gynecology and female hormonal health

Led by Dr. Irina Podaneva. A specialized practice with an integrative approach, combining clinical gynecology with the regenerative-medicine principles that define the center.

Areas of practice

  • Climacteric and menopause
  • Hormonal evaluation and management
  • Reproductive health
  • Preventive gynecology
  • Female longevity programs
  • Comprehensive sexual health

Every clinical indication is evaluated individually. The suitability of any protocol is determined during the initial consultation with one of our specialist physicians, taking into account medical history, complementary studies and the patient's goals.

View all diagnostics
Therapeutic protocols and preventive care

Clinical Programs

Two distinct clinical paths.

NexusMed's clinical practice is structured into two categories of care based on each patient's therapeutic goal.

01 · Clinical path

Therapeutic protocols.

For patients with an active clinical diagnosis of autoimmune, neurological, liver, rheumatologic or oncologic disease who require specialized intervention.

  • Clinical evaluation with a specialist physician
  • Review of medical history and complementary studies
  • Design of an individualized therapeutic protocol
  • Execution under direct medical supervision
  • Coordination with the patient's treating medical team
  • Clinical follow-up with biomarkers

Duration varies according to condition and clinical response.

View therapeutic protocols
02 · Clinical path

Preventive medicine and longevity.

For patients without active disease seeking advanced clinical optimization and precision medicine. Three tiers available.

Initial

Evaluation Consultation

Current clinical status and diagnostic plan.

60 to 90 minutes

Comprehensive

In-Depth Diagnostics

Expanded biomarker panel and therapeutic plan.

One to two visits within a week

Executive

Longevity Program

Comprehensive optimization with twelve-month follow-up.

Annual program with quarterly reassessment

Full protocols
Videos: GEMMA, lipid profile and a patient story
GEMMA technology
Dr. Cristina Zumbana explains the GEMMA platform.
Medical explainer
Plasmapheresis, triglycerides and cholesterol.
Patient story
A patient shares his care experience.
Patient and referring physician experiences

Patient testimonials

Care experiences, in their own words.

Voluntary testimonials from patients and referring physicians. Individual clinical results may vary.

“
My son developed Guillain-Barré at 19. At the hospital we were told recovery would take months. After five plasmapheresis sessions at NexusMed, he regained function within weeks. The medical team understood the urgency from the first consultation.
Patient’s mother · Quito
Condition: Guillain-Barré syndrome
“
Three years with systemic lupus erythematosus refractory to multiple immunosuppressants. The plasmapheresis protocol changed my biomarkers measurably. What I valued most was the team’s clinical transparency: explaining the evidence without promises.
Patient · Cuenca, Ecuador
Condition: Systemic lupus erythematosus
“
Advanced steatohepatitis with transaminases that did not respond to treatment. The combined protocol normalized liver markers over four months. My referring hepatologist has requested documentation of the case.
Patient · Guayaquil, Ecuador
Condition: Advanced non-alcoholic steatohepatitis
“
Two years with myasthenia gravis unresponsive to conventional treatments. Plasmapheresis sessions restored muscle strength and clinical independence. Follow-up has been at the level of a university center.
Patient’s daughter · Bogotá, Colombia
Condition: Myasthenia gravis
“
As a cancer patient receiving chemotherapy, I was looking for complementary support. NexusMed coordinated every intervention with my oncologist. The apheresis and regenerative medicine protocols made the cycles more clinically tolerable.
Patient · Houston, Texas
Reason: Complementary oncology support
“
I arrived as a physician with professional skepticism. The diagnostic assessment was more rigorous than at my own institution. The protocol relied on documented clinical evidence. I have referred patients ever since.
Referring physician · Bogotá, Colombia
NexusMed medical and clinical team together beside the apheresis device at the clinic

International patients

Your medical team, before and after your journey.

Care in Quito, coordinated from New York with Dr. Kristina Zumbana. Medical history review, treatment planning and remote follow-up in six languages.

Information for international patients
Dr. Gerardo Zumbana speaking at an international medical congress
Medical publication

Dr. Zumbana's book: plasmapheresis protocols, regenerative medicine and chronic diagnostics

Available in Spanish, English and Russian for download. ISBN 978-9978-21-092-5.

Frequently asked questions

Clear information. Informed decisions.

All questions
What is therapeutic apheresis and how does it differ from other treatments?

Therapeutic apheresis is a medical procedure that separates blood components to selectively remove one of them — usually plasma with its pathological contents — and return the rest to the patient. It is an established medical procedure, distinct from dialysis (which removes waste in patients with kidney failure) and from intravenous therapies (which add substances). It has well-established clinical indications in autoimmune, neurological and other diseases.

Do you guarantee clinical results?

No. No serious medical center guarantees results, since the response to any treatment depends on individual patient variables. We share with the patient the available clinical evidence, the expected outcomes based on the medical literature, and the known limitations of each procedure.

Are the regenerative therapies you offer approved?

Regulatory status varies by procedure and country. Therapeutic apheresis is an internationally established medical procedure. Cell therapy and other regenerative medicine interventions have different regulatory frameworks depending on the country. We discuss the applicable regulatory framework for each procedure with every patient before treatment begins.

Do you replace conventional medical treatments?

It depends on the clinical case. In some cases, our procedures are the primary indication (for example, plasmapheresis in Guillain-Barré syndrome). In oncology, our practice is strictly complementary to the patient's primary cancer treatment and always coordinated with the treating oncology team.

What is the first consultation like?

The first consultation lasts 60 to 90 minutes. It includes a complete review of the medical history, physical exam, discussion of clinical goals and definition of the diagnostic plan. For international patients, it can be done virtually before travel.

How long do the effects of a treatment last?

The duration and magnitude of the clinical response varies depending on the condition, individual patient characteristics and adherence to follow-up recommendations. This is discussed in detail when building the treatment plan.

Do you work with international insurance?

We coordinate with some international medical insurers. Specific coverage depends on each policy. To verify coverage, we recommend checking before booking the initial consultation.

How do I request the first consultation?

Through the form on this website, by email at nexusmedclinic@gmail.com or by phone. The clinical coordination team responds within one business day at the latest.

Consultation

Book an initial evaluation.

Initial consultations are scheduled within 7 business days of first contact. The clinical coordination team receives every request and routes it to the appropriate physician.

Your information is handled with medical confidentiality. Response within one business day at the latest.

Prefer WhatsApp? +593 99 232 5886

Visit NexusMed

Address
Cumbayá, Quito, Ecuador
Hours
Monday to Friday: 8:00 am – 6:00 pm
Saturdays: 9:00 am – 2:00 pm
Sundays: closed
Phone numbers
+593 99 232 5886
+593 96 280 3109
Email
nexusmedclinic@gmail.com
International coordination by our medical team
nexusmedint@gmail.com
WhatsApp