Patrick Michael Grehan, PhD
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 1465 Broadway, Hewlett, NY 11557
- Practice phone
- Call (718) 767-0610
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Professional Physical Therapy
Hewlett, New York
Find Patrick Grehan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Patrick Michael Grehan is a clinical psychologist in Hewlett, New York
Patrick Grehan practices at Professional Physical Therapy in Hewlett, New York.
Patrick Grehan's NPI, 1407924368, was assigned on November 30, 2006. Patrick Grehan holds New York license 014194.
- NPI
- 1407924368NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850494394
- NPI enumeration date
- November 30, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (718) 767-0610
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Patrick Michael Grehan practices at Professional Physical Therapy in Hewlett, New York
Patrick Grehan's primary practice is Professional Physical Therapy, at 1465 Broadway, Hewlett, NY 11557 in Nassau County. The practice phone is (718) 767-0610.
- Professional Physical Therapy1465 Broadway, Hewlett, NY 11557 · Nassau CountyPhone(718) 767-0610
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Patrick Michael Grehan is affiliated with 2 sites of care
Patrick Grehan's primary practice is Professional Physical Therapy in Hewlett, New York. Dmand AI also links Patrick Grehan to 1 physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Patrick Michael Grehan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Patrick Grehan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Professional Physical Therapy | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Patrick Michael Grehan is one of 1,967 clinical psychologists in New York
Clinical is Patrick Grehan's primary specialty in the NPI Registry, under taxonomy code 103TC0700X. Patrick Grehan is licensed in New York.
Specialties and state licenses
- Clinical psychologist, New YorkPrimary
Clinical psychologists near Patrick Grehan
Counts of clinical psychologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Patrick Michael Grehan's patients have a median age of 42
Across all payers, Dmand AI patient panel data puts Patrick Grehan's median patient age at 42, with 0% women.
Patrick Grehan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 42
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
How Patrick Michael Grehan takes part in Medicare
Patrick Grehan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Sources for Patrick Michael Grehan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Patrick Michael Grehan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Patrick Michael Grehan's NPI number?
Patrick Michael Grehan's NPI number is 1407924368. It was assigned on November 30, 2006, and it is active in the NPI Registry.
What does Patrick Michael Grehan specialize in?
Patrick Michael Grehan is a clinical psychologist in Hewlett, New York. The primary specialty in the NPI Registry is Clinical Psychologist (taxonomy code 103TC0700X).
Where does Patrick Michael Grehan practice?
Patrick Grehan practices at 1465 Broadway, Hewlett, NY 11557. Patrick Grehan's primary practice is Professional Physical Therapy in Hewlett, New York. Dmand AI also links Patrick Grehan to 1 physician office.
What is Patrick Michael Grehan's office phone number?
The practice phone on file for Patrick Grehan is (718) 767-0610.
What is Patrick Michael Grehan's medical license number?
Patrick Grehan holds New York license 014194.
Does Patrick Michael Grehan accept Medicare?
Yes. CMS lists Patrick Grehan as accepting Medicare assignment.
How long has Patrick Michael Grehan been practicing?
Patrick Grehan graduated from medical school in 1998, 28 years ago.
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