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Patients in Riverhead and around Suffolk County see Dr. Denis J. Nankervis, a general surgeon, at Peconic Bay Primary Medical Care.
Lake Erie College of Osteopathic Medicine, Erie is where Dr. Nankervis went to medical school, graduating in 2011.
You'll find Dr. Nankervis at 34 Commerce Ave, Riverhead, NY 11901. Call (631) 727-1600 to schedule. Other listed locations: 504 Main St Suite B, Center Moriches, NY 11934; 504 Montauk Hwy Suite B, Center Moriches, NY 11934. The group behind the practice, Peconic Bay Primary Medical Care, lists 71 clinicians with Medicare. He accepts Medicare assignment — useful to know if you are on traditional Medicare.
Dr. Nankervis is affiliated with Peconic Bay Medical Center, Southside Hospital (Northwell Health) and Stony Brook University Hospital.
Quick facts
- Specialty
- General surgeon
- Credentials
- DO
- Practice
- Peconic Bay Primary Medical Care
- Address
- 34 Commerce Ave, Riverhead, NY 11901
- Phone
- (631) 727-1600
- Other locations
- 504 Main St Suite B, Center Moriches, NY 11934; 504 Montauk Hwy Suite B, Center Moriches, NY 11934
- Medical school
- Lake Erie College of Osteopathic Medicine, Erie (2011)
- Hospital affiliations
- Peconic Bay Medical Center, Southside Hospital (Northwell Health), Stony Brook University Hospital
- Medicare assignment
- Accepts
- NPI number
- 1205111655
- NY license no.
- 289148-1
Have you been a patient of Dr. Nankervis? A short, fair review — what went well, what didn't — helps the next person choosing a general surgeon in Riverhead.
Medicare, Medicaid and hospitals
- Medicare patients (2024)
- 552 people with traditional Medicare, average age 78
- Most common services billed to Medicare
- Removal of gallbladder using an endoscope
- Strapping, unna boot
- Procedures on Medicare Care Compare
- Removal of tissue 43 procedures
- Hernia repair - groin (open) 1–10 procedures
- Colonoscopy 1–10 procedures
- Medicare quality score (MIPS 2024)
- 93 out of 100
- New York Medicaid
- Enrolled fee-for-service provider since 2017. Medicaid managed-care plans keep their own networks, so check with your plan.
- Hospital pages
- Peconic Bay Medical Center · Southside Hospital (Northwell Health) · Stony Brook University Hospital
Medicare figures cover people with traditional (fee-for-service) Medicare only; services billed for fewer than 11 patients are not published.
Comparing general surgeons? See 2 in Riverhead or 115 across Long Island.
Other general surgeons in Long Island
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Dr. Jonathan D. Klein, MDGeneral Surgeon · Chs Physician Partners PCNo reviews yetBethpage, NY
Dr. Jonathan Zagzag, MDGeneral Surgeon · Chs Physician Partners PCNo reviews yetGreenvale, NYWrite a review
Frequently Asked Questions
With Peconic Bay Primary Medical Care, at 34 Commerce Ave, Riverhead, NY 11901.
Call the office at (631) 727-1600.
Yes — Dr. Nankervis accepts Medicare assignment, taking the Medicare-approved amount as full payment for covered services.
Peconic Bay Medical Center, Southside Hospital (Northwell Health) and Stony Brook University Hospital.
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