MayaYumin Group · 盟遠

Medical judgement, across the Pacific.

For health systems, hospitals, universities and insurers working between Taiwan and the United States: a physician and public-health researcher who knows both sides, reads both languages, and writes it down.

MayaYumin Group is a consulting practice in health systems, cross-Pacific health partnerships, medical underwriting advisory, and teaching and research. It is led by Wan Lin Chen, MD, PhD, a surgeon and critical-care physician who spent nineteen years inside Taiwan’s national aeromedical approval system and now teaches injury prevention and public health. It is a small, independent practice, and it does not do medical assistance, evacuation or case management.

Write to us What we do

Registered in Wyoming, USA and in Taiwan · Contracted in the United States for clients outside Taiwan · Remote by default, on site where it matters

The MayaYumin Group mark: one line over the mountain to the far horizon, the sun on the line

Nineteen years at Taiwan’s National Aeromedical Approval Center Boards in surgery, neurosurgery, critical care and aviation medicine · PhD in public health Assistant Professor, Taipei Medical University Atayal · English and Mandarin · Taipei and US hours

Practice

Four kinds of question we are asked

Each engagement starts with a clinical, system or policy question and ends with a written opinion you can act on. We are asked by health systems and Indigenous health services, by hospitals and universities on both sides of the Pacific, by life and health insurers, and by founders building health ventures between Taiwan and the United States. We do not sell products, hold insurance licences, or take a share of what we advise on.

Health systems for remote and Indigenous communities

Critical-care access in the places that test it: mountains, islands, Indigenous communities, and health systems under disaster or surge.

Telemedicine and remote-consultation programmes that connect a small hospital to a critical-care decision, from design to evaluation
Referral pathways and critical-care access for remote and Indigenous communities, informed by Taiwan’s mountain and offshore-island experience and by lived Atayal community life
Disaster, pandemic and surge planning for health organisations, drawing on Taiwan’s earthquakes, typhoons and pandemic response

Taiwan–US health partnerships

Strategy and execution for health-sector organisations working between Taiwan, the United States and the wider Asia-Pacific.

Hospital-to-hospital partnerships: observerships, training exchanges, joint programmes, credentialing and the paperwork that makes an MOU real
International patient programme readiness for Taiwanese medical centres with US-facing strengths, and clinical due diligence for US institutions choosing a partner in Taiwan
Market entry and partnership assessment for health companies, with the clinical side read as closely as the commercial one

Medical underwriting advisory

Independent physician opinion for life and health insurers whose underwriting decisions turn on a clinical judgement they cannot make in house, especially when the medical record is in Chinese.

Medical review and risk assessment of underwriting files, with a written opinion addressed to your medical director
Consultation to in-house underwriting and medical teams
Design and teaching of medical training for underwriters and other non-clinical professionals, from reading a medical record to reading an East Asian one

Underwriting only. We do not review travel, assistance or medical-expense claims, do cost containment or case management, or perform independent medical examinations or state-licensed peer review in the United States.

Teaching, research and expert input

What a university post and nineteen years of national data make possible.

Lectures, curricula and simulation design in disaster medicine, aviation and critical-care medicine, and injury prevention, for medical schools, hospitals and professional bodies
Research collaboration and study design in injury prevention, emergency access and public health, with Taiwan data and a US academic connection
Advisory boards, journal peer review, and expert input to public bodies and standard-setting groups

How we work

A written opinion, on a clock, at an agreed fee

Every enquiry is acknowledged within one business day, Taipei or US hours. Scope, fee and deadline are agreed in writing before work starts, and the deliverable is always something you can file.

Hourly · by the question

Consultation

A call or a short written note on a live question for your medical director, programme lead or board: what the record says, what the option costs clinically, which partner is credible.

Hourly, quoted within one business day

Fixed fee · two to eight weeks

Written opinion or diagnostic

The core product. A signed report addressed to your organisation: the question, the evidence reviewed and in what language, findings, recommendations, and the limits of the opinion. Underwriting opinions, partnership due diligence, programme and readiness reviews.

Fixed fee agreed in advance, in USD or TWD

Monthly · by the role

Retained adviser

A physician adviser on call for a programme, a partnership or an underwriting team: a set number of hours a month, a standing weekly call, and the reports that come out of it.

Monthly retainer, scoped to the hours you need

Fees are fixed or hourly and never depend on the outcome. We hold no insurance licence and take no commission, referral fee or equity in what we advise on.

What a written opinion contains

The question as your team put it, and how we understood it.
What was reviewed: documents, data, site visits and interviews, and in which language, with what was missing.
Findings, with the reasoning shown.
Recommendations, in the order we would do them, with what each depends on.
Limits of the opinion and what would change it.
Signature: name, specialty, Taiwan licence, date, and the line “addressed to” your organisation.

Working across the Pacific

Why both sides matter

We read Taiwanese and Chinese-language records, guidelines and hospital documents ourselves, as physicians, and say what they mean against Taiwan NHI practice.
We know which Taiwanese hospitals do what, and who decides there; and we know how a US academic centre vets a partner.
We are working in Taipei when your Asian partner is awake, and in the United States often enough to sit in the room.
Every opinion is written in plain English, with Traditional Chinese on request.

Principal

Wan Lin Chen, MD, PhD

Founder & CEO

Medicine: MD, National Taiwan University College of Medicine
Research: MSc, Injury Prevention and Control; PhD, Public Health, Taipei Medical University
Boards: Surgery · Neurosurgery · Critical care medicine · Aviation medicine (Taiwan)
Public service: Deputy Medical Director and researcher, National Aeromedical Approval Center (空中轉診審核中心, Ministry of Health and Welfare), 2005–2024
Academic: Assistant Professor, Institute of Injury Prevention and Control, Taipei Medical University
Honours: Medical Service Excellence, Republic of the Marshall Islands (2025) · National Innovation Excelsior Award for a novel emergency air medical service system (2022–2024) · 32nd Medical Dedication Award, Saint Paul’s Hospital Indigenous Health Service Team (2022) · Excellence in Teaching and Services, Air Medical Physician Association (2010–2019)
Verification: Taiwan medical licence, board certificates and full CV available on request · Request the CV

Dr. Chen is a surgeon and critical-care physician who spent nineteen years, from 2005 to 2024, as Deputy Medical Director and researcher at Taiwan’s National Aeromedical Approval Center, the public body that decides which patients may be flown from Taiwan’s islands and mountains and under what conditions. The work combined bedside judgement with system design: approval criteria, review mechanisms and the statistics that show whether a programme is working. That public-system experience, and the data behind it, is what she now brings to health systems and researchers.

She has advised life insurers on medical risk, taught disaster and aviation medicine, and spoken at international medical meetings. She also holds a senior medical consulting role with an international medical-assistance organisation; MayaYumin Group does not take work that overlaps with that role.

She works in English and Mandarin, and divides her time between the United States and Taiwan, where she farms with her father on the family’s Atayal land. Mountain and Indigenous access to care is not an abstraction for her: it is where her own community lives.

What we do and do not do

Advisory, independent, and inside the line

We do

Advise organisations and licensed clinicians: health systems, Indigenous health services, hospitals, universities, insurers’ underwriting teams, public bodies and founders.
Address every opinion to your medical director, programme lead, board or research team, in writing, with the reasoning shown.
Read Chinese-language records, guidelines and hospital documents ourselves, as physicians.
Work under written confidentiality and data-protection terms: HIPAA business-associate terms for US covered entities, a GDPR data-processing agreement for European clients, and Taiwan’s Personal Data Protection Act for Taiwanese data.

We do not

Provide medical assistance, evacuation, repatriation, fitness-to-fly or transport services, or case management of any kind. For those, engage a medical-assistance company.
Review travel, assistance or medical-expense claims, or do cost containment. Our insurer work is underwriting advisory only.
Perform independent medical examinations, utilisation-review determinations or external reviews. Our opinions are advisory and create no physician-patient relationship. Dr. Chen is licensed in Taiwan and does not practise medicine in the United States.
Hold an insurance licence, take a commission, or accept fees that depend on the outcome. Records are returned or destroyed at the end of the engagement, and we say so in writing.

Ventures

What else the group keeps

The consulting practice is borderless. These three are rooted in one mountain in Tai’an, Taiwan, and are run from there.

Saluwan Farm · 初亮農場

A family farm on Atayal land in the mountains of Miaoli: plums, bamboo shoots, a father’s language, and a quiet place for people who want to be alone with nature.

saluwan-farm.pages.dev →

The Daxing Atayal corpus

Recordings, transcriptions and metadata of the Ts’ole’ Atayal of Daxing village, catalogued and licensed to research institutions and language-technology teams.

Catalogue and licensing →

IdeaFarm · 思田

Essays by the founder on medicine, music, mountains and whatever else is growing. A field for ideas, with a place for readers to write back.

Read →

Write to us

Tell us the question

Three ways in. Every one is acknowledged within one business day, Taipei or US hours.

Your name and organisation Type of question

Timing Language of the material

The question, in a few lines

Do not attach records or confidential documents yet. Send the question first; we reply with the data terms that apply to you and a secure way to share material.

maya@mayayumingroup.com

Phone and messaging: +886 987 038 822 · Taipei hours (UTC+8)

MayaYumin Group LLC

A Wyoming limited liability company, United States. Contracting entity for clients outside Taiwan. W-9 on request; invoices in USD.

MayaYumin Group Co., Ltd. · 盟遠有限公司

New Taipei City, Taiwan. Contracting entity for clients in Taiwan; invoices with Taiwan uniform invoices, in TWD. Records of Taiwanese patients reviewed for foreign clients can stay in Taiwan.

For insurers in Taiwan

Engagements can be contracted to the terms of the Financial Supervisory Commission’s insurer-outsourcing regulation of 31 December 2025: fixed scope and term, audit and regulator access, confidentiality, and no subcontracting without written consent.

Conflicts and onboarding

We check every enquiry for conflicts before accepting it, and decline work that overlaps with the principal’s other roles. Credentials, conflict-of-interest and confidentiality attestations, and information-security practices are provided as a one-page pack on request.