Joseph P. O'Brien
Internal Medicine Physician · Clifton, NJ
Joseph P. O'Brien is an internal medicine physician with a practice address in Clifton, New Jersey, and NPI 1689618860, issued on Jun 16, 2006. Check the license (New Jersey MA72214, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Joseph P. O'Brien
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MA72214 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 6 Brighton RD, Clifton, NJ 07012
- Phone
- (973) 777-7911
- Enumerated
- Jun 16, 2006
- Record last updated
- Jul 10, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (973) 777-5403
- Medicaid ID
- 0066559 NJ
- Medicare enrollment
- Enrolled (PECOS I20110517000848); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Also registered at 6 Brighton RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Phylicia Baird, MDInternal Medicine Physician1982947750
- Sadana Balachandar, M.D.Pediatric Endocrinology Physician1528262359
- Howard BaumGastroenterology Physician1558301176
- Sarah Bornstein, APNPrimary Care Nurse Practitioner1316210081
- Dane BrownAthletic Trainer1902226715
- David Chen, MDFamily Medicine Physician1437120961
Verify Joseph P. O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license MA72214Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average internal medicine physician in 2024
8,311 Medicare Part D claims for 720 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 192 claims were for opioids.
Most prescribed
- Atorvastatin Calcium551 claims
- Amlodipine Besylate453 claims
- Alprazolam367 claims
- Levothyroxine Sodium364 claims
- Rosuvastatin Calcium300 claims
- Metformin Hcl298 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Summit Medical Group PABerkeley Heights, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph P. O'Brien among 4,632 internal medicine physician records in New Jersey
Joseph P. O'Brien is one of 4,632 internal medicine physician records with a practice address in New Jersey. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 50% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1998 · median 2000 among the 3,132 with a school on file
- Record last updated2019 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
52 internal medicine physician records list a practice address in Clifton
They are 52 of the 1,732 NPPES records with a practice address in Clifton, and 4,632 internal medicine physician records in New Jersey.
All 4,632 in New Jersey → Every provider in Clifton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Phylicia Baird, MDClifton, NJ 070121982947750
- David DebellClifton, NJ 070121811938566
- Frank DegiacomoClifton, NJ 070121578507711
- Rania Fadlalla, MDClifton, NJ 070121922502889
- Marissa Ferrazzo-Weller, D.O.Clifton, NJ 070121780943001
- Chandrasekaran Janakiraman, MDClifton, NJ 070121780761700
- Harold JawetzClifton, NJ 070121972543585
- Najmul RanaClifton, NJ 070121477569036
Common questions
What is Joseph P. O'Brien's NPI number?
Joseph P. O'Brien's National Provider Identifier (NPI) is 1689618860, issued on Jun 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph P. O'Brien located?
The NPPES record lists a practice address at 6 Brighton RD, Clifton, NJ, 07012. Phone: (973) 777-7911. Providers update this record themselves, so call before visiting.
How can I verify Joseph P. O'Brien's license?
NPPES lists New Jersey license number MA72214, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joseph P. O'Brien prescribe under Medicare Part D?
In 2024, Joseph P. O'Brien had 8,311 Medicare Part D claims for 720 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.