Gregory P. Brennan, DC
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 750 South Abbe Road, Elyria, OH 44035
- Practice phone
- Call (440) 323-5121
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Psych & Psych Services
Outpatient Addiction Treatment · Elyria, Ohio
Find Gregory Brennan'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.
Gregory P. Brennan is a chiropractor in Elyria, Ohio
Gregory Brennan practices at Psych & Psych Services in Elyria, Ohio.
Gregory Brennan's NPI, 1164597175, was assigned on November 22, 2006. Gregory Brennan holds Ohio license 1551.
- NPI
- 1164597175NPI Registry (opens in a new tab)
- NPI enumeration date
- November 22, 2006
- NPI status
- Active
- Practice phone
- (440) 323-5121
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Gregory P. Brennan practices at Psych & Psych Services in Elyria, Ohio
Gregory Brennan's primary practice is Psych & Psych Services, at 750 South Abbe Road, Elyria, OH 44035. The practice phone is (440) 323-5121.
- Psych & Psych Services750 South Abbe Road, Elyria, OH 44035Phone(440) 323-5121
Source: Dmand AI Affiliation Data
Gregory P. Brennan is affiliated with 1 site of care
Gregory Brennan's primary practice is Psych & Psych Services in Elyria, Ohio.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Gregory P. Brennan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Brennan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Psych & Psych Services | Available with a free account |
Source: Dmand AI Technology Install Data
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Gregory P. Brennan is one of 1,633 chiropractors in Ohio
Chiropractor is Gregory Brennan's primary specialty in the NPI Registry, under taxonomy code 111N00000X. Gregory Brennan is licensed in Ohio.
Specialties and state licenses
- Chiropractor, OhioPrimary
Chiropractors near Gregory Brennan
Counts of chiropractors 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
Gregory P. Brennan's patients have a median age of 53
Across all payers, Dmand AI patient panel data puts Gregory Brennan's median patient age at 53, with 52% women.
Gregory Brennan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women52%
- Men48%
Source: Dmand AI Patient Panel Data
Sources for Gregory P. Brennan'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 |
| 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 Gregory P. Brennan
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What is Gregory P. Brennan's NPI number?
Gregory P. Brennan's NPI number is 1164597175. It was assigned on November 22, 2006, and it is active in the NPI Registry.
What does Gregory P. Brennan specialize in?
Gregory P. Brennan is a chiropractor in Elyria, Ohio. The primary specialty in the NPI Registry is Chiropractor (taxonomy code 111N00000X).
Where does Gregory P. Brennan practice?
Gregory Brennan practices at 750 South Abbe Road, Elyria, OH 44035. Gregory Brennan's primary practice is Psych & Psych Services in Elyria, Ohio.
What is Gregory P. Brennan's office phone number?
The practice phone on file for Gregory Brennan is (440) 323-5121.
What is Gregory P. Brennan's medical license number?
Gregory Brennan holds Ohio license 1551.
How long has Gregory P. Brennan been practicing?
Gregory Brennan graduated from medical school in 1989, 37 years ago.
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