John K. Mariani, DO
Orthopaedic Surgery Physician · Sewell, NJ
John K. Mariani, DO is an orthopaedic surgery physician with a practice address in Sewell, New Jersey, and NPI 1811006885, issued on Aug 30, 2006. Check the license (New Jersey 25MB04123100, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- John K. Mariani
- Credential
- DO
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 25MB04123100 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 570 Egg Harbor RD, Sewell, NJ 08080
- Phone
- (609) 267-9400
- Enumerated
- Aug 30, 2006
- Record last updated
- Mar 17, 2026
- Fax
- (609) 267-9457
- Medicare enrollment
- Enrolled (PECOS I20101027000428); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1981
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 690 in New Jersey → Look up another NPI →
Also registered at 570 Egg Harbor RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brian Behlau, PTSpecialist1164467098
- Linda Boyd, D.O.Family Medicine Physician1316969132
- Patricia Boyle, MPTPhysical Therapist1184663700
- Abbe Dantzig, OTHand Occupational Therapist1225127814
- Adam Dezii, PT, DPTPhysical Therapist1912256421
- Theresa Ditizio, DPTPhysical Therapist1780925354
Verify John K. Mariani 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 25MB04123100Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
245 Medicare Part D claims for 146 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 150 claims were for opioids.
Most prescribed
- Oxycodone Hcl118 claims
- Amoxicillin36 claims
- Tramadol Hcl24 claims
- Clindamycin Hcl14 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: $2,783.90
26 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 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
- Virtua Medical Group, PABordentown, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John K. Mariani among 690 orthopaedic surgery physician records in New Jersey
John K. Mariani, DO is one of 690 orthopaedic surgery physician records with a practice address in New Jersey. 80% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 42% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1981 · median 2001 among the 444 with a school on file
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in New Jersey
There are 690 orthopaedic surgery physician records in New Jersey.
All 690 in New Jersey → Every provider in Sewell → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Luke Austin, M.D.Sewell, NJ 080801629195532
- Enrico Marcelli, DOSewell, NJ 080801295844348
- Robert Ponzio, D.O.Sewell, NJ 080801508816661
- Anel Abreu, D.O., M.S.Stratford, NJ 080841982728960
- Jack Carfagno, DOStratford, NJ 080841104670645
- Nithin Gupta, DOStratford, NJ 080841760285043
- David Bundens, MDWest Deptford, NJ 080861154321701
- Jatin Gandhi, MDPennsville, NJ 080701811951635
Common questions
What is John K. Mariani, DO's NPI number?
John K. Mariani, DO's National Provider Identifier (NPI) is 1811006885, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John K. Mariani, DO located?
The NPPES record lists a practice address at 570 Egg Harbor RD, Sewell, NJ, 08080. Phone: (609) 267-9400. Providers update this record themselves, so call before visiting.
How can I verify John K. Mariani, DO's license?
NPPES lists New Jersey license number 25MB04123100, 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 John K. Mariani, DO prescribe under Medicare Part D?
In 2024, John K. Mariani, DO had 245 Medicare Part D claims for 146 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.