Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Mark Jack Der Mesropian, DO

Individual provider Anesthesiology Physician · NPI 1124309349

Dr. Mark Jack Der Mesropian, DO is an Anesthesiology in Long Branch, New Jersey. Qualified in 2009, 17 years ago. Practices with Rwjbh Observation Associates LLC, a 971-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Connecticut and New Jersey.

Years since qualifying
17
Licensed in
CT, NJ
In the registry since
2011
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

300 2nd Ave
Long Branch, NJ 07740-6303
Phone: (732) 222-5200
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 150 55th St, Brooklyn, NY 11203-2012 — (718) 630-7476

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 25MB10061600 (NJ)
Anesthesiology Physician Taxonomy 207L00000X · Licence 051857 (CT)

Record details

NPI number1124309349
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedSeptember 1, 2011
Last updated in NPPESJanuary 23, 2023
Certification dateJanuary 23, 2023
Mailing address300 Ocean Ave N, Apt 2b, Long Branch, NJ 07740-7578

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Rwjbh Observation Associates Llc — 971 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Long Branch