Quick answers
- Where does John H. Masi see patients?
- Medicare's clinician data lists 2 practice locations, including Voorhees, NJ and Mullica Hill, NJ. Call before your visit to confirm the address.
- What is John H. Masi's specialty?
- Medicare lists Dentist as the primary specialty, and also Maxillofacial Surgery.
- Does John H. Masi accept Medicare assignment?
- Yes. Medicare's clinician data says John H. Masi 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.
- What is the phone number for John H. Masi?
- (856) 772-1500, as listed in official Medicare / NPI Registry data.
- What is John H. Masi's NPI number?
- 1437686862. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John H. Masi is enrolled with Medicare (CMS data updated 2026-10-02).
- 2301 E Evesham Rd, Suite 602Voorhees, NJ 08043 (856) 772‑1500
- 5 Myers Dr, Suite 107Mullica Hill, NJ 08062 (856) 772‑1500
Group practices
Medicare enrollment lists John H. Masi as a member of this group (CMS data updated 2026-10-02).
- Optimum Oral Surgery Group LLC3 clinicians in the group
Specialties
- Dentistprimary
- Maxillofacial Surgeryalso
Other dentists in Voorhees
Clinicians with the same Medicare primary specialty in Voorhees, NJ — not a recommendation.
Clinician information
| Graduation year | 2017 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437686862 |
| 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
- 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