Marianna Karounos, D.O.
Emergency Medicine Physician · Hackensack, NJ
Marianna Karounos, D.O. is an emergency medicine physician with a practice address in Hackensack, New Jersey, and NPI 1831356336, issued on May 21, 2008. Check the license on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Marianna Karounos
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 260758 NY
Self-reported in NPPES; status is on the state search - Practice location
- 185 Prospect Ave, Hackensack, NJ 07601
- Phone
- (201) 546-8397
- Enumerated
- May 21, 2008
- Record last updated
- Oct 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110707000619); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 2007
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,754 in New Jersey → Look up another NPI →
Also registered at 185 Prospect Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Linda Poskanzer, LCSWClinical Social Worker1942363312
- Gary RichPharmacist1851779300
Verify Marianna Karounos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical ExaminersCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average emergency medicine physician in 2024
13 Medicare Part D claims, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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
- Emergency Physician Services OF New York, P.C.Poughkeepsie, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marianna Karounos among 1,754 emergency medicine physician records in New Jersey
Marianna Karounos, D.O. is one of 1,754 emergency medicine physician records with a practice address in New Jersey. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 45% of them.
- NPI issued2008 · 45% of these records are older, 50% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2007 · median 2011 among the 1,167 with a school on file
- Record last updated2021 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
95 emergency medicine physician records list a practice address in Hackensack
They are 95 of the 2,908 NPPES records with a practice address in Hackensack, and 1,754 emergency medicine physician records in New Jersey.
All 1,754 in New Jersey → Every provider in Hackensack → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Howard Chase, MDHackensack, NJ 076011669429346
- Cary Chiang, M.D.Hackensack, NJ 076011841231016
- Beverly Davison, MDHackensack, NJ 076011720029820
- Christine Fernandez, MDHackensack, NJ 076011053340513
- Jessica Henderson-Chen, MDHackensack, NJ 076011417994021
- Monica Hernandez, MDHackensack, NJ 076011235171166
- Kevin Hewitt, MDHackensack, NJ 076011447294046
- David Negron, MDHackensack, NJ 076011497799019
Common questions
What is Marianna Karounos, D.O.'s NPI number?
Marianna Karounos, D.O.'s National Provider Identifier (NPI) is 1831356336, issued on May 21, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Marianna Karounos, D.O. located?
The NPPES record lists a practice address at 185 Prospect Ave, Hackensack, NJ, 07601. Phone: (201) 546-8397. Providers update this record themselves, so call before visiting.
How can I verify Marianna Karounos, D.O.'s license?
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 Marianna Karounos, D.O. prescribe under Medicare Part D?
In 2024, Marianna Karounos, D.O. had 13 Medicare Part D claims; the average among emergency medicine physician prescribers was 226. 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.