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Family Practice

Mark T. Grilli, DO

Sees patients in Flemington, NJ · New Jersey

Summary

Mark T. Grilli, DO (Family Practice) is enrolled with Medicare at 3 practice locations in Flemington, NJ. NPI 1851089593. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(908) 284‑1125 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Mark T. Grilli, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

3Practice locations
Family PracticePrimary specialty
YesAccepts Medicare assignment
3Years since medical school (graduated 2023)
MaleGender (as listed)
Hunterdon Primary Care PCGroup practice

Quick answers

Where does Mark T. Grilli see patients?
Medicare's clinician data lists 3 practice locations, including Flemington, NJ. Call before your visit to confirm the address.
What is Mark T. Grilli's specialty?
Medicare lists Family Practice as the primary specialty.
Does Mark T. Grilli accept Medicare assignment?
Yes. Medicare's clinician data says Mark T. Grilli 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 Mark T. Grilli?
(908) 284-1125, as listed in official Medicare / NPI Registry data.
What is Mark T. Grilli's NPI number?
1851089593. 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 Mark T. Grilli is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Mark T. Grilli as a member of this group (CMS data updated 2026-10-02).

  • Hunterdon Primary Care PC63 clinicians in the group

Specialties

Find other Family Practice doctors in New Jersey →

Other family doctors in Flemington

Clinicians with the same Medicare primary specialty in Flemington, NJ — not a recommendation.

All family doctors in Flemington →

Clinician information

CredentialDO
Graduation year2023
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1851089593
CorrectionsReport 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

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians