A/Prof Sophia Archuleta is an infectious diseases physician in the Division of Infectious Diseases, Department of Medicine at National University Hospital.
Qualifications (as publicly listed)
BS, Yale University; MD, Albert Einstein College of Medicine; Diplomate, American Board of Internal Medicine & Infectious Diseases
Where they practise
Sophia Archuleta practises at National University Hospital, in the Division of Infectious Diseases, Department of Medicine. See the official profile linked below for current clinic and appointment details.
About Infectious Diseases
Infectious diseases (ID) medicine deals with infections that are severe, unusual, persistent or hard to treat. ID physicians diagnose and manage serious bacterial infections, tuberculosis, HIV, hepatitis, tropical and travel-related illness, infections in people with weakened immunity or after transplant, and complex antibiotic decisions. They also advise on vaccination, travel health and antimicrobial stewardship — using antibiotics wisely to limit resistance. Diagnosis draws on cultures, blood tests, imaging and molecular tests. Many patients are seen alongside other specialists when an infection complicates another condition.
Conditions and treatments commonly covered
Areas commonly seen in infectious diseases include:
- Serious or persistent infections
- Tuberculosis (TB)
- HIV and hepatitis
- Travel and tropical illness
- Infections in weakened immunity / transplant
- Complex antibiotic management
What to expect at a consultation
An initial consultation usually involves a discussion of your symptoms and medical history, a focused examination, and any tests needed to reach a diagnosis. The specialist will explain the findings, walk you through your options — including non-surgical approaches where relevant — and set out the likely costs and next steps before anything proceeds. If a procedure is recommended, it is reasonable to ask what it involves, the expected recovery time, the risks and the alternatives, so you can make an informed decision at your own pace. It helps to keep asking questions until you fully understand the plan.
Preparing for your appointment
- Bring referral letters, past reports, scan images and a list of your current medications.
- Note your main symptoms, when they started and what makes them better or worse.
- Write down the questions that matter most to you, and bring a family member if it helps.
After your consultation and follow-up
Depending on the diagnosis, you may be given medication, referred for further tests or imaging, scheduled for a procedure, or asked to return for review. Ask what warning signs should prompt earlier contact, how to get your results, and who to reach if you have questions between visits. Keeping your own copy of reports makes future care and any second opinion easier.
Costs, subsidies and financing in Singapore
For subsidised care at a public (restructured) hospital, a referral from a GP or polyclinic is generally needed; private specialists can usually be booked directly at full fees. Ask upfront for an estimate covering the consultation, tests and any procedure. Depending on the treatment, you may be able to use MediSave for approved day-surgery and procedures (within set limits), with MediShield Life or an Integrated Shield Plan helping for larger inpatient bills. Purely cosmetic procedures are not claimable. If cost is a concern, it is worth asking whether a subsidised referral is possible, and comparing written estimates between providers before you commit.
How to choose the right infectious diseases physician in Singapore
Beyond credentials, it helps to match the specialist to your specific problem. Consider whether their sub-specialty fits your condition, how often they manage or operate on cases like yours, which hospital they admit to (and whether it suits your budget and insurance), and how clearly they explain your options and costs. Accreditation can be confirmed on the Register of Specialists and registration on the Singapore Medical Council register. Independent reviews are a useful signal for communication and experience, but weigh them alongside credentials rather than on their own.
Questions worth asking at your first consultation
- Are you an accredited specialist in the area my condition falls under?
- What are my options, including non-surgical or watch-and-wait approaches?
- How often do you treat or perform this, and what are the typical outcomes and risks?
- What is the full estimated cost, and what can I claim through MediSave or insurance?
- Are you comfortable with me seeking a second opinion?
Verifying credentials
In Singapore every practising doctor must be registered with the Singapore Medical Council, and specialists are additionally listed on the Register of Specialists maintained by the Specialist Accreditation Board — you can search both to confirm a doctor’s registration and field. The letters after a name (such as MRCP, FRCS or FAMS) reflect postgraduate training and fellowships, but the key question is simply whether the doctor is an accredited specialist in the area relevant to your care.
When to consider a second opinion
A second opinion is reasonable before major surgery, for a serious or unclear diagnosis, or when a recommended treatment feels aggressive or uncertain. Good specialists welcome it. Bring your reports and scans so the second doctor can assess the same information. You are entitled to a copy of your medical records to take along, and seeking another view will not offend a good specialist.
Common questions
When would I see an infectious diseases doctor?
For a serious, persistent or unusual infection, fever after travel, HIV or hepatitis care, TB, an infection not responding to antibiotics, or infections in people with weakened immunity.
Do I need a referral?
Usually yes — ID physicians most often see patients referred by a GP, another specialist or a hospital team; some also run travel or HIV clinics.
What is antimicrobial stewardship?
Using antibiotics carefully and only when needed — treating infections effectively while slowing the rise of antibiotic resistance.
Do I need a referral to see this specialist?
For subsidised care at a public hospital you generally need a GP or polyclinic referral; private specialists can usually be seen directly.
How can I verify a doctor’s credentials?
Check the Singapore Medical Council’s Register of Medical Practitioners, and the Register of Specialists for accredited specialists.
Selected research & publications
Sophia Archuleta has contributed to peer-reviewed research in infectious diseases. A selection of published work:
- Cefazolin for Methicillin-Susceptible Staphylococcus aureus Bacteremia — N Engl J Med, 2026
- HIV-Now Another Long Term Chronic Condition? — Viruses, 2026
- Perspectives on Analytical Treatment Interruptions and Prospects of an HIV Cure Amongst People Living with HIV and Healthcare Providers in Singapore — AIDS Behav, 2026
- HIV self-testing in Singapore is safe, feasible and acceptable: Results from a pilot implementation project — Ann Acad Med Singap, 2026
- The Role of PrEP Initiation on Depression Severity, HIV-Related Anxiety, HIV Stigma, and PrEP Stigma Among Sexual Minority Men in Singapore: Findings from a Prospective Cohort and Longitudinal Mixed-Methods Study — AIDS Behav, 2026
- Cefiderocol versus standard therapy for hospital-acquired and health-care-associated Gram-negative bacterial bloodstream infection (the GAME CHANGER trial): an open-label, parallel-group, randomised trial — Lancet Infect Dis, 2026
Related guides
Sources & verification
Profile details are summarised from the doctor’s official listing (official profile). Registration can be verified on the Singapore Medical Council’s Register of Medical Practitioners, and specialist accreditation on the Register of Specialists.
General information only, not medical advice. Details may change — confirm current clinic, availability and fees with the provider.
See also: our editorial directory of infectious disease specialists in Singapore.
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