Quick answers
- Which hospitals does Sergey Rybalov work at?
- Medicare's official clinician data lists Sergey Rybalov at 3 hospitals: Morristown Medical Center, Newton Medical Center and Saint Clare's Hospital/ Denville Campus. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sergey Rybalov see patients?
- Medicare's clinician data lists 2 practice locations, including Denville, NJ and Dover, NJ. Call before your visit to confirm the address.
- What is Sergey Rybalov's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Sergey Rybalov accept Medicare assignment?
- Yes. Medicare's clinician data says Sergey Rybalov accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Sergey Rybalov offer telehealth?
- Medicare's clinician data says Sergey Rybalov offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Sergey Rybalov?
- (973) 627-7600, as listed in official Medicare / NPI Registry data.
- What is Sergey Rybalov's NPI number?
- 1386670552. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sergey Rybalov works
Medicare's Facility Affiliation Data lists Sergey Rybalov at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Morristown Medical CenterMorristown, NJ · Acute Care Hospital · CCN 310015
- Newton Medical CenterNewton, NJ · Acute Care Hospital · CCN 310028
- Saint Clare's Hospital/ Denville CampusDenville, NJ · Acute Care Hospital · CCN 310050
Practice locations
Addresses where Sergey Rybalov is enrolled with Medicare (CMS data updated 2026-10-02).
- 16 Pocono Rd, Suite 210Denville, NJ 07834 (973) 627‑7600
- 369 W Blackwell St, Suite 4Dover, NJ 07801 (973) 361‑7660
Group practices
Medicare enrollment lists Sergey Rybalov as a member of this group (CMS data updated 2026-10-02).
- Gastroenterology Assoc. of North Jersey3 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Denville
Clinicians with the same Medicare primary specialty in Denville, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1386670552 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians