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MARK A MERLIN DO
NPI 1093725822
Emergency Medicine in East Hanover, NJ

Active since August 08, 2006PECOS EnrolledAccepts Medicare Assignment
399 ROUTE 10, EAST HANOVER, NJ 07936(908) 577-9808(908) 577-9809 Get Directions Write a Review

NPPES record last updated: January 16, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 16, 2026, Jan 26, 2023, Nov 4, 2022 and 1 more (4 updates tracked since 2022).

About Mark A Merlin Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK A MERLIN DO (NPI 1093725822) is an individual emergency medicine provider in East Hanover, New Jersey, licensed in New Jersey (25MB06607500) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Massac Memorial Hospital, and maintains 6 additional practice locations.

NPPES Registry Identity

NPI1093725822
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameMARK A MERLINCredential: DO
Location Address399 ROUTE 10East Hanover, NJ 07936
Mailing Address70 S Orange Ave Ste 235Livingston, NJ 07039-4915 · (973) 607-4911 · Fax (973) 607-4911
Phone(908) 577-9808
Fax(908) 577-9809
Sole ProprietorNo
Medical School CMSOtherGraduated 1994
Enumeration DateAugust 8, 2006
Last NPPES UpdateJanuary 16, 20264 updates tracked since enumeration
NPPES CertifiedJanuary 16, 2026
✔ NPI 1093725822 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in NJ · 25MB06607500✔ Licensed in NY · 282169✔ Licensed in PA · OS020981✔ Licensed in NH · 20890✔ Licensed in CA · 18612✔ Licensed in NJ · MB066075
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
399 ROUTE 10, East Hanover, NJ 07936
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Secondary Practice Locations 6

Location 135 W 35th St Fl 6New York, NY 10001-2205 · Phone (866) 349-4230 · Fax (877) 282-9624
Location 270 S Orange Ave Ste 235Livingston, NJ 07039-4915 · Phone (973) 607-4911 ext. 103 · Fax (973) 607-4911
Location 3154 Hansen Access RdKing Of Prussia, PA 19406-2404 · Phone (866) 349-4230 · Fax (877) 282-9624
Location 455 Lane Rd Ste 300Fairfield, NJ 07004-1015 · Phone (866) 349-4230 · Fax (877) 282-9624
Location 59961 Baldwin PlEl Monte, CA 91731-2203 · Phone (813) 416-6438 · Fax (877) 282-9624
Location 61 Robert Wood Johnson Pl, Department of Emergency MedicineNew Brunswick, NJ 08901-1928 · Phone (732) 828-3000

Other Identifiers 1

Medicaid8064407NJ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health Maintenance Organization of Florida.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark A Merlin Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9335241629
PECOS Enrollment IDI20070216000024, I20260116000455
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

18

Medicare enrollment records show Mark Merlin reassigns Medicare billing to 18 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Life Medical Group, PC
2.5 mi
Multi-Specialty
120 EAGLE ROCK AVE STE 200
East Hanover, NJ 07936
  • Reassigned Medicare billing, New Jersey enrollment
  • 19 clinicians in this Medicare group
NPI 1134939333 (973) 607-4911
Life Mobile Imaging, Inc
2.5 mi
Portable X-ray and/or Other Portable Diagnostic Imaging Supplier
120 EAGLE ROCK AVE STE 200
East Hanover, NJ 07936
  • Reassigned Medicare billing, New Jersey enrollment
NPI 1508677519 (973) 607-4911
Rwjbh Observation Associates LLC
4.1 mi
Emergency Medicine
94 OLD SHORT HILLS RD
Livingston, NJ 07039
  • Reassigned Medicare billing, New Jersey enrollment
  • 1,913 clinicians in this Medicare group
NPI 1760095806 (888) 724-7123
Stadium Emergency Associates
15 mi
Emergency Medical Services
55 MEADOWLANDS PKWY
Secaucus, NJ 07094
  • Reassigned Medicare billing, New Jersey enrollment
  • 74 clinicians in this Medicare group
NPI 1205293693 (732) 212-0060
Rwjbh Emergency Medicine Associates, LLC
20 mi
Emergency Medicine
3 EXECUTIVE DR, STE 400
Somerset, NJ 08873
  • Reassigned Medicare billing, New Jersey enrollment
  • 1,557 clinicians in this Medicare group
NPI 1912510041 (732) 867-9618
Mobile Medical Healthcare, P.C.
21 mi
Family Medicine
685 3RD AVE FL 9
New York, NY 10017
  • Reassigned Medicare billing, California, New Jersey and Pennsylvania enrollments
  • Medicare enrollment name: Mobile Medical Healthcare PC
NPI 1679185904 (844) 443-6246
Physicians Medical Associates New York PC
67 mi
Emergency Medicine
241 NORTH RD
Poughkeepsie, NY 12601
  • Reassigned Medicare billing, New York enrollment
  • 235 clinicians in this Medicare group
NPI 1487409702 (845) 483-5000
Mobile Urgent Care Medical Services PC
72 mi
Urgent Care
701 COOPER RD STE 1
Voorhees, NJ 08043
  • Reassigned Medicare billing, New Jersey enrollment
  • 13 clinicians in this Medicare group
NPI 1245975135 (866) 349-4230
Port City Emergency Physicians LLP
152 mi
Emergency Medicine
150 BROAD ST
Hamilton, NY 13346
  • Reassigned Medicare billing, New York enrollment
  • 129 clinicians in this Medicare group
NPI 1316395460 (315) 824-1100
Upstate Emergency Medicine, Inc
180 mi
Emergency Medicine
750 E. ADAMS ST.
Syracuse, NY 13210
  • Reassigned Medicare billing, New York enrollment
  • 170 clinicians in this Medicare group
NPI 1275589582 (315) 464-4363

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
51 services49 patients
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza 87428
This test uses a method called immunoassay to identify severe acute respiratory syndrome coronavirus and influenza. It works by detecting specific proteins (antigens) in a sample, like a nasal swab. It's a powerful tool in diagnosing these viral infections.
13 services12 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Massac Memorial Hospital

Critical Access Hospitals · Metropolis, IL
OwnershipProprietary
CMS Certification Number141323
Location28 Chick Street, PO Box 850Metropolis, IL 62960 · Massac County
Emergency services

Cooperman Barnabas Medical Center

Acute Care Hospitals · Livingston, NJ
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310076
Location94 Old Short Hills RoadLivingston, NJ 07039 · Essex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07936 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$98.09 typical visit price
range $63.84 – $190.92
Typical copayment $24.52 (range $15.96 – $47.73)
Most-billed visit code 99203
Established Patient
$111.57 typical visit price
range $20.97 – $155.92
Typical copayment $27.89 (range $5.24 – $38.98)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SUMMIT MEDICAL GROUP PA
Durable Medical Equipment & Medical Supplies
399 ROUTE 10
EAST HANOVER, NJ 07936
Morris County (908) 557-9808
KATHRYN WERRELL TOTH PA-C
Physician Assistant (Medical)
399 ROUTE 10
EAST HANOVER, NJ 07936
Morris County (908) 557-9808

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Merlin's NPI number?

The NPI number for Mark Merlin is 1093725822. It was assigned to this individual provider in the NPPES registry on August 8, 2006.

Where is Mark Merlin located?

Mark Merlin practices at 399 Route 10, East Hanover, NJ 07936. The listed phone number is (908) 577-9808.

What is Mark Merlin's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Mark Merlin enrolled in Medicare?

Yes. Mark Merlin is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Mark Merlin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Merlin reassigns Medicare benefits to 18 organizations: Life Medical Group, PC (East Hanover, NJ), Life Mobile Imaging, Inc (East Hanover, NJ), Rwjbh Observation Associates LLC (Livingston, NJ), Stadium Emergency Associates (Secaucus, NJ), Rwjbh Emergency Medicine Associates, LLC (Somerset, NJ) and 13 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Merlin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Merlin accept?

Health plans from Oscar Health Maintenance Organization of Florida list Mark Merlin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mark Merlin affiliated with any hospitals?

According to CMS data, Mark Merlin is affiliated with Massac Memorial Hospital and Cooperman Barnabas Medical Center.

When was this NPI record last updated?

The NPPES record for Mark Merlin was last updated on January 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.