Gary Oxenberg, MD
Internal Medicine Physician · Northfield, NJ
Gary Oxenberg, MD is an internal medicine physician with a practice address in Northfield, New Jersey, and NPI 1346214533, issued on Feb 14, 2006. Check the license (New Jersey 25MA10211100, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Gary Oxenberg
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 25MA10211100 NJ
MD039259L PA
Self-reported in NPPES; status is on the state search - Practice location
- 1418 New RD Ste 2, Northfield, NJ 08225
- Phone
- (609) 796-7969
- Enumerated
- Feb 14, 2006
- Record last updated
- Oct 16, 2025
- Medicaid IDs
- 001489863007 PA
0046451 NJ - Medicare enrollment
- Enrolled (PECOS I20190411003108); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Also registered at 1418 New RD Ste 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Diane Maggio, APNGerontology Nurse Practitioner1063753473
- Jenna McNicholl, PA-CMedical Physician Assistant1861798399
Verify Gary Oxenberg 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 25MA10211100Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% more Medicare Part D claims than the average internal medicine physician in 2024
4,581 Medicare Part D claims for 421 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 27 claims were for opioids.
Most prescribed
- Atorvastatin Calcium340 claims
- Levothyroxine Sodium197 claims
- Amlodipine Besylate193 claims
- Metformin Hcl193 claims
- Omeprazole126 claims
- Pantoprazole Sodium126 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.
Industry payments in 2024: $475.56
23 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Platinum Providers Group, LLCMays Landing, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary Oxenberg among 4,632 internal medicine physician records in New Jersey
Gary Oxenberg, MD 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
- Graduated1980 · median 2000 among the 3,132 with a school on file
- Record last updated2025 · 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).
8 internal medicine physician records list a practice address in Northfield
They are 8 of the 343 NPPES records with a practice address in Northfield, and 4,632 internal medicine physician records in New Jersey.
All 4,632 in New Jersey → Every provider in Northfield → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Abraham Abtahian, MDNorthfield, NJ 082251972798643
- Behdokht Daneshvar, MDNorthfield, NJ 082251093745473
- George Groch, M.D.Northfield, NJ 082251093861700
- Maria Jimenez Cerna, M.D.Northfield, NJ 082251447668348
- Marcantonio Nanfara, MDNorthfield, NJ 082251326078114
- Charles Nnewihe, M.D.Northfield, NJ 082251760419097
- Ulices Perez Feliz, MDNorthfield, NJ 082251366619371
- Avelino Cruz, M.D.Marmora, NJ 082231639118862
Common questions
What is Gary Oxenberg, MD's NPI number?
Gary Oxenberg, MD's National Provider Identifier (NPI) is 1346214533, issued on Feb 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary Oxenberg, MD located?
The NPPES record lists a practice address at 1418 New RD Ste 2, Northfield, NJ, 08225. Phone: (609) 796-7969. Providers update this record themselves, so call before visiting.
How can I verify Gary Oxenberg, MD's license?
NPPES lists New Jersey license number 25MA10211100, 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 Gary Oxenberg, MD prescribe under Medicare Part D?
In 2024, Gary Oxenberg, MD had 4,581 Medicare Part D claims for 421 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.