John C. O'Brien, DMD
- Part D claims, 2024
- 112
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 729 Franklinville Rd, Mullica Hill, NJ 08062-4705
- Practice phone
- Call (856) 478-0200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Thomas W Helwig
Dental practice · Mullica Hill, New Jersey
Find John O'Brien'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.
John C. O'Brien is a general practice dentistry in Mullica Hill, New Jersey
John O'Brien practices at Thomas W Helwig in Mullica Hill, New Jersey.
John O'Brien's NPI, 1891913893, was assigned on April 23, 2007. John O'Brien holds New Jersey license 22652.
- NPI
- 1891913893NPI Registry (opens in a new tab)
- NPI enumeration date
- April 23, 2007
- NPI status
- Active
- Practice phone
- (856) 478-0200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John C. O'Brien practices at Thomas W Helwig in Mullica Hill, New Jersey
John O'Brien's primary practice is Thomas W Helwig, at 729 Franklinville Rd, Mullica Hill, NJ 08062-4705. The practice phone is (856) 478-0200.
- Thomas W Helwig729 Franklinville Rd, Mullica Hill, NJ 08062-4705Phone(856) 478-0200
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John C. O'Brien is affiliated with 1 site of care and 1 medical group
John O'Brien's primary practice is Thomas W Helwig in Mullica Hill, New Jersey. Dmand AI also links John O'Brien to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at John C. O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John O'Brien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Thomas W Helwig | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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John C. O'Brien is one of 1,592 general practice dentistrys in New Jersey
General practice is John O'Brien's primary specialty in the NPI Registry, under taxonomy code 1223G0001X. John O'Brien is licensed in New Jersey.
Specialties and state licenses
- General practice dentistry, New JerseyPrimary
General practice dentistrys near John O'Brien
Counts of general practice dentistrys 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
John C. O'Brien's patients have a median age of 39
Across all payers, Dmand AI patient panel data puts John O'Brien's median patient age at 39, with 50% women.
John O'Brien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 39
Patient panel by sex, all payers
- Women50%
- Men38%
Source: Dmand AI Patient Panel Data
John C. O'Brien wrote 112 Medicare Part D claims in 2024
In 2024, John O'Brien wrote 112 Medicare Part D claims for 63 patients. 91% of them were for generic drugs.
John O'Brien's Part D claims by kind of drug, 2024
- Generic102 claims91%
- Brand-name and other10 claims9%
Drug classes CMS tracks in John O'Brien's Part D claims, 2024
- Antibiotics73%82 of 112 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Sources for John C. O'Brien'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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 John C. O'Brien
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John C. O'Brien's NPI number?
John C. O'Brien's NPI number is 1891913893. It was assigned on April 23, 2007, and it is active in the NPI Registry.
What does John C. O'Brien specialize in?
John C. O'Brien is a general practice dentistry in Mullica Hill, New Jersey. The primary specialty in the NPI Registry is General Practice Dentistry (taxonomy code 1223G0001X).
Where does John C. O'Brien practice?
John O'Brien practices at 729 Franklinville Rd, Mullica Hill, NJ 08062-4705. John O'Brien's primary practice is Thomas W Helwig in Mullica Hill, New Jersey. Dmand AI also links John O'Brien to 1 medical group.
What is John C. O'Brien's office phone number?
The practice phone on file for John O'Brien is (856) 478-0200.
What is John C. O'Brien's medical license number?
John O'Brien holds New Jersey license 22652.
How long has John C. O'Brien been practicing?
John O'Brien's NPI was assigned in 2007.
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