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Clinical Psychologist

Michelle S. Grennan

Sees patients in Mount Vernon, NY · New York

Summary

Michelle S. Grennan (Clinical Psychologist) is enrolled with Medicare at 1 practice location in Mount Vernon, NY. NPI 1922544477. Source: CMS National Downloadable File, updated 2026-10-02.

Call(914) 310‑7943 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Michelle S. Grennan, 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

1Practice location
Clinical PsychologistPrimary specialty
May acceptAccepts Medicare assignment
YesOffers telehealth
11Years since medical school (graduated 2015)
FemaleGender (as listed)

Quick answers

Where does Michelle S. Grennan see patients?
Medicare's clinician data lists 1 practice location in Mount Vernon, NY. Call before your visit to confirm the address.
What is Michelle S. Grennan's specialty?
Medicare lists Clinical Psychologist as the primary specialty.
Does Michelle S. Grennan accept Medicare assignment?
Medicare's clinician data says Michelle S. Grennan may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
Does Michelle S. Grennan offer telehealth?
Medicare's clinician data says Michelle S. Grennan offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Michelle S. Grennan?
(914) 310-7943, as listed in official Medicare / NPI Registry data.
What is Michelle S. Grennan's NPI number?
1922544477. 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 Michelle S. Grennan is enrolled with Medicare (CMS data updated 2026-10-02).

Specialties

Find other clinicians: Clinical Psychologist, New York →

Other clinical psychologists in Mount Vernon

Clinicians with the same Medicare primary specialty in Mount Vernon, NY — not a recommendation.

All clinical psychologists in Mount Vernon →

Clinician information

Graduation year2015
Gender (as listed)Female
Medicare assignmentMay accept for some services
TelehealthOffers telehealth services
NPI (National Provider Identifier)1922544477
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