MERRIMACK VALLEY EMERGENCY ASSOCIATES, INC.
NPI 1821280959
Emergency Medicine in Lowell, MA

Q: What is Merrimack Valley Emergency Associates, Inc.'s specialty?

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

Active since August 13, 2007

295 VARNUM AVE, LOWELL, MA 01854(978) 937-6161(781) 276-6410 Get Directions Write a Review

NPPES record last updated: October 15, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Merrimack Valley Emergency Associates, Inc. NPPES

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

MERRIMACK VALLEY EMERGENCY ASSOCIATES, INC. (NPI 1821280959) is a healthcare organization registered as an emergency medicine in Lowell, Massachusetts and active in the NPI registry since August 2007. The organization lists Nathan Macdonald, President, as its authorized official.

NPPES Registry Identity

NPI1821280959

Entity TypeOrganization

Primary Taxonomy207P00000X

Legal Business NameMERRIMACK VALLEY EMERGENCY ASSOCIATES, INC.

Location Address295 VARNUM AVELowell, MA 01854-2134

Mailing AddressPo Box 3497Boston, MA 02241-3497 · (781) 280-1500 · Fax (781) 276-6410

Phone(978) 937-6161

Fax(781) 276-6410

Organization SubpartNo

Authorized OfficialNathan MacdonaldPresident · (978) 937-6101

Enumeration DateAugust 13, 2007

Last NPPES UpdateOctober 15, 2012

✔ NPI 1821280959 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

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.

295 VARNUM AVE, Lowell, MA 01854

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include WellSense Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Merrimack Valley Emergency Associates, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 49 clinicians reassign Medicare billing to Merrimack Valley Emergency Associates, Inc., which bills Medicare for the services they deliver. Of these, 24 practice within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 3

Emergency Medicine41

Nurse Practitioner6

Pediatric Medicine2

Nearest to this location (20)

See all 49

David Druga, M.D.

Emergency Medicine

NPI 1316308216

295 VARNUM AVE
Lowell, MA 01854

(978) 937-6161

✔ PECOS✔ Accepts MedicareSame address

Nicholas Huynh

Emergency Medicine

NPI 1720737869

295 VARNUM AVE
Lowell, MA 01854

(818) 624-1715

✔ PECOS✔ Accepts MedicareSame address

Jose Ponce Rios, M.D.

Pediatric Medicine

NPI 1154556496

295 VARNUM AVE
Lowell, MA 01854

(978) 937-6000

✔ PECOSSame address

Marc Roy, MD

Emergency Medicine

NPI 1548241227

295 VARNUM AVE
Lowell, MA 01854

(978) 937-6161

✔ PECOS✔ Accepts MedicareSame address

Frank Wu, MD

Emergency Medicine

NPI 1366182362

295 VARNUM AVE
Lowell, MA 01854

(508) 618-3006

✔ PECOS✔ Accepts MedicareSame address

Tina Bramante, D.O.

Emergency Medicine

NPI 1053755462

295 VARNUM AVE
Lowell, MA 01854

(978) 937-6000

✔ PECOS✔ Accepts Medicare0.1 mi

Susan Brough, MD

Emergency Medicine

NPI 1073586442

295 VARNUM AVE
Lowell, MA 01854

(978) 937-6161

✔ PECOS0.1 mi

Jennifer Berninger, FNP

Nurse Practitioner

NPI 1255685855

295 VARNUM AVE
Lowell, MA 01854

(978) 937-6000

✔ PECOS✔ Accepts Medicare0.1 mi

Francesco Corvi

Emergency Medicine

NPI 1649239500

295 VARNUM AVE
Lowell, MA 01854

(978) 937-6161

✔ PECOS✔ Accepts Medicare0.1 mi

Jonathan Drake, MD

Emergency Medicine

NPI 1861451551

295 VARNUM AVE DEPARTMENT OF EMERGENCY MEDICINE
Lowell, MA 01854

(978) 937-6161

✔ PECOS0.1 mi

Leslie Halpern, M.D.

Emergency Medicine

NPI 1992061253

295 VARNUM AVE
Lowell, MA 01854

(978) 937-6161

✔ PECOS✔ Accepts Medicare0.1 mi

Nathan Macdonald, M.D.

Emergency Medicine

NPI 1639136591

295 VARNUM AVE LOWELL GENERAL HOSPITAL EMERGENCY DEPARTMENT
Lowell, MA 01854

(978) 937-6161

✔ PECOS0.1 mi

Kimberly Morton, M.D.

Emergency Medicine

NPI 1326176074

295 VARNUM AVE
Lowell, MA 01854

(781) 937-4545

✔ PECOS✔ Accepts Medicare0.1 mi

Sean Mosharo, M.D.

Emergency Medicine

NPI 1497952592

295 VARNUM AVE
Lowell, MA 01854

(978) 937-6161

✔ PECOS0.1 mi

Ravi Murthy, MD

Emergency Medicine

NPI 1013150309

295 VARNUM AVE
Lowell, MA 01854

(978) 937-6161

✔ PECOS0.1 mi

Derek Wayman

Emergency Medicine

NPI 1275858730

295 VARNUM AVE EMERGENCY DEPARTMENT
Lowell, MA 01854

(978) 937-6000

✔ PECOS0.1 mi

Rothsovann Yong, MD

Emergency Medicine

NPI 1922268044

295 VARNUM AVE
Lowell, MA 01854

(978) 937-6000

✔ PECOS0.1 mi

Shorta Yuasa, M.D.

Emergency Medicine

NPI 1629024328

295 VARNUM AVE
Lowell, MA 01854

(978) 937-6161

✔ PECOS0.1 mi

Carlos Flores, APRN-BC

Nurse Practitioner

NPI 1891827135

1 HOSPITAL DR
Lowell, MA 01852

(978) 458-1411

✔ PECOS2.2 mi

Meaghan Nitka, MD

Emergency Medicine

NPI 1952551376

1 HOSPITAL DR
Lowell, MA 01852

(978) 934-8323

✔ PECOS✔ Accepts Medicare2.2 mi

See all 49 clinicians

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

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 Merrimack Valley Emergency Associates, Inc.'s NPI number?

The NPI number for Merrimack Valley Emergency Associates, Inc. is 1821280959. It was assigned to this organization in the NPPES registry on August 13, 2007.

Where is Merrimack Valley Emergency Associates, Inc. located?

Merrimack Valley Emergency Associates, Inc. is located at 295 Varnum Ave, Lowell, MA 01854. The listed phone number is (978) 937-6161.

What is Merrimack Valley Emergency Associates, Inc.'s specialty?

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

Is Merrimack Valley Emergency Associates, Inc. enrolled in Medicare?

Yes. Merrimack Valley Emergency Associates, Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Merrimack Valley Emergency Associates, Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 49 clinicians in 3 Medicare specialties reassign their Medicare billing to Merrimack Valley Emergency Associates, Inc.. A 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 the clinician's services. The largest specialties are Emergency Medicine (41), Nurse Practitioner (6) and Pediatric Medicine (2). Of these, 24 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Merrimack Valley Emergency Associates, Inc. accept?

Health plans from WellSense Health Plan list Merrimack Valley Emergency Associates, Inc. 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.

When was this NPI record last updated?

The NPPES record for Merrimack Valley Emergency Associates, Inc. was last updated on October 15, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years 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.