What insurance plans do you accept?
We currently accept: "Aetna Commercial
BCBS HMO Risk
BCBS PPO
BCBS Indeminity
BCBS Medicare Advantage
Cigna
Commonwealth Care Alliance Medicare
Commonwealth Care Alliance One Care Medicare
Fallon Medicare Advantage
Fallon Senior Care Option
Fallon Atrius Health ACO
Harvard Pilgrim Health Care Fully Insured
Harvard Pilgrim Health Care Self Insured
MGBHP HMO and QHP Unsubsidized
MGBHP QHP subsidized
MGBHP PPO
MGBHP Mass Health ACO
Senior Whole Health Senior Care Options Medicare
Tricare (Humana Military)
Tufts Health Plan HMO/POS
Tufts Health Plan PPO
Tufts Health Public Plans MassHealth ACO
Tufts Health Public Plans One Care
Tufts Medicare Preferred Medicare Advantage
Tufts Medicare Preferred Senior Care Options
United Commercial
United Medicare Advantage
United Senior Care Options
United One Care Medicare
United VA Community Care Network Medicare
Wellfleet Commercial
WellPoint Commercial / Indemnity
WellSense BILHPN ACO.
Coverage varies by employer plan, even within the same insurance company. Always confirm your individual plan coverage with your insurer before your visit.

Do I need a referral to be seen?
No, Dr. Oza will be happy to see you for urgent issues, but for certain insurances (ex. HMO plans), your visits and treatment may not be covered if you do not change your Primary Care Provider to Dr. Oza.
Please call your insurer at the number listed on the back of your insurance card if you are not sure.
For your reference, Dr. Oza's NPI is: 1780810572

Boston Specialists is committed to providing the best possible endoscopy experience, with an emphasis on safety, comfort, and convenience.

Experience

Dr. Leung has been doing endoscopies since 2007.

Unrivaled Convenience

Boston Specialists offers same-week and month procedures, performed by the same gastroenterologist that you see for your regular consultations!

What is a deductible?
Your deductible is a set amount you must pay out-of-pocket each year before your insurance starts paying for covered services. It typically resets at the start of every calendar year.

Example:
If your deductible is $1,500 and you haven’t paid for any services towards that amount, you may be responsible for full visit and procedure costs until you reach $1,500.

What is a copay?
A copay is a fixed amount you pay for a visit or service. This amount is determined by your insurer and will be due at check-in. You may still owe a copay even after you meet your deductible.

What is coinsurance?
Some insurance plans may require you to pay a coinsurance, which is a percentage of the total cost of your visit or procedure. You may still owe a coinsurance even after you meet your deductible.

What is “out-of-pocket maximum”?
This is the most you’ll pay in a year for covered services. Once you reach this limit, your insurance pays 100% of covered services for the rest of the year.

What is Prior Authorization?
Some insurance plans require approval before certain services (e.g., endoscopy, biologic injections, infusions, advanced imaging, food challenges). Our office will request authorization, but approval is not guaranteed and is ultimately determined by your insurance. We ask that you be patient with our team, as prior authorizations can take up to 2 weeks to process.

Will I get a bill even if I have insurance?
Yes, you may receive a bill for a deductible, copay, coinsurance, or non-covered services. Insurance rarely covers 100% of costs unless you’ve met your out-of-pocket maximum.

When do I have to pay?
Copays and estimated patient responsibility are due at the time of service. Balances after insurance processes your claim will be billed later.

What if my insurance denies coverage?
You are responsible for the full cost of any visits or procedures if any of the following are true:
-You did not obtain a required referral or authorization
-Your plan is out-of-network
-Your plan considers a procedure as a non-covered service
We can provide documentation to assist with appeals, but payment responsibility remains with the patient. We recommend calling your insurance to check if proposed services are covered by your plan.

What if I’m out-of-network?
Out-of-network services often result in:
-Higher out-of-pocket costs
-Balance billing
-Denied coverage
Always confirm network status with your insurer before your appointment.

Important Note
Insurance coverage is a contract between you and your insurer. Final coverage decisions are made by your insurance company.

What if I am sick in between appointments?

-Please call 911 if it is a medical emergency; otherwise, please call our office or reach out to us by email. You should expect an answer within 24hours.
-If it is a non-urgent medical question, please book an appointment in Nexhealth.

What do I need to do to prepare for the clinic visit?

-Bring a photo ID and insurance card
-Identify a pharmacy that you will use for picking up medications (address and fax#)
-Find out your co-pay amount by calling your insurance company or checking your insurance card
-To request prior records, please fill out this form.
-Please fill out this intake form before your appointment.

Preparing for Your Appointment

After this time, your designated driver may bring you home. 10 days after your procedure, we will see you at our clinic for a follow-up visit to discuss the results of your endoscopy and pathology, as well as to form long-term treatment plans accordingly.