Hillary S. Grennan, LCSW
- Affiliated sites
- 3
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2013
- Practice address
- 1 Diamond Hill Road, Suite 1b-142, Berkeley Heights, NJ 07922
- Practice phone
- Call (908) 273-4300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Summit Medical Group Ambulatory Surgery Center - Berkeley Heights
Surgery Center - Medicare-Certified · Berkeley Heights, New Jersey
Find Hillary Grennan'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.
Hillary S. Grennan is a clinical social worker in Berkeley Heights, New Jersey
Hillary Grennan practices at Summit Medical Group Ambulatory Surgery Center - Berkeley Heights in Berkeley Heights, New Jersey.
Hillary Grennan's NPI, 1477982221, was assigned on November 2, 2013.
- NPI
- 1477982221NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486978376
- NPI enumeration date
- November 2, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (908) 273-4300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Hillary S. Grennan practices at Summit Medical Group Ambulatory Surgery Center - Berkeley Heights in Berkeley Heights, New Jersey
Hillary Grennan's primary practice is Summit Medical Group Ambulatory Surgery Center - Berkeley Heights, at 1 Diamond Hill Road, Suite 1b-142, Berkeley Heights, NJ 07922. The practice phone is (908) 273-4300.
- Summit Medical Group Ambulatory Surgery Center - Berkeley Heights1 Diamond Hill Road, Suite 1b-142, Berkeley Heights, NJ 07922Phone(908) 273-4300
Source: Dmand AI Affiliation Data
Hillary S. Grennan is affiliated with 3 sites of care and 2 medical groups
Hillary Grennan's primary practice is Summit Medical Group Ambulatory Surgery Center - Berkeley Heights in Berkeley Heights, New Jersey. The medical group on file is Summit Health. Dmand AI also links Hillary Grennan to 2 more group practices and clinics and 1 medical group, each named with a free account. Hillary Grennan's employer is on file too: a surgery center (asc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Hillary S. Grennan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Hillary Grennan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Summit Medical Group Ambulatory Surgery Center - Berkeley Heights | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Hillary S. Grennan is one of 3,184 clinical social workers in New Jersey
Social worker is Hillary Grennan's primary specialty in the NPI Registry, under taxonomy code 1041C0700X. The record also lists clinical.
Specialties and state licenses
- Clinical social workerPrimary
Clinical social workers near Hillary Grennan
Counts of clinical social workers 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
Hillary S. Grennan's patients have a median age of 49
Across all payers, Dmand AI patient panel data puts Hillary Grennan's median patient age at 49, with 69% women.
Hillary Grennan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 49
Patient panel by sex, all payers
- Women69%
- Men25%
Source: Dmand AI Patient Panel Data
Hillary S. Grennan offers telehealth to Medicare patients
Hillary Grennan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Hillary Grennan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Sources for Hillary S. Grennan'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 Hillary S. Grennan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Hillary S. Grennan's NPI number?
Hillary S. Grennan's NPI number is 1477982221. It was assigned on November 2, 2013, and it is active in the NPI Registry.
What does Hillary S. Grennan specialize in?
Hillary S. Grennan is a clinical social worker in Berkeley Heights, New Jersey. The primary specialty in the NPI Registry is Clinical Social Worker (taxonomy code 1041C0700X).
Where does Hillary S. Grennan practice?
Hillary Grennan practices at 1 Diamond Hill Road, Suite 1b-142, Berkeley Heights, NJ 07922. Hillary Grennan's primary practice is Summit Medical Group Ambulatory Surgery Center - Berkeley Heights in Berkeley Heights, New Jersey. Dmand AI also links Hillary Grennan to 2 group practices and clinics and 1 medical group.
What is Hillary S. Grennan's office phone number?
The practice phone on file for Hillary Grennan is (908) 273-4300.
What medical group is Hillary S. Grennan part of?
Hillary Grennan is linked to Summit Health. Dmand AI links Hillary Grennan to 1 more medical group.
Does Hillary S. Grennan accept Medicare?
Yes. CMS lists Hillary Grennan as accepting Medicare assignment.
Does Hillary S. Grennan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Hillary Grennan as offering telehealth services.
How long has Hillary S. Grennan been practicing?
Hillary Grennan graduated from medical school in 2008, 18 years ago.
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