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STEWARD EMERGENCY PHYSICIANS, INC
NPI 1780971275
Emergency Medicine in Ayer, MA

Active since July 05, 2011

NPPES record last updated: February 26, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Steward Emergency Physicians, Inc NPPES

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

STEWARD EMERGENCY PHYSICIANS, INC (NPI 1780971275) is a healthcare organization registered as an emergency medicine in Ayer, Massachusetts and active in the NPI registry since July 2011. The organization lists Michael Callum, Ceo, as its authorized official.

NPPES Registry Identity

NPI1780971275
Entity TypeOrganization
Primary Taxonomy207P00000X
Legal Business NameSTEWARD EMERGENCY PHYSICIANS, INC
Location Address200 GROTON RDAyer, MA 01432-1168
Mailing Address200 Groton RdAyer, MA 01432-1168 · (866) 969-6774
Phone(978) 784-9000
Organization SubpartNo
Authorized OfficialMichael CallumCeo · (617) 419-4702
Enumeration DateJuly 5, 2011
Last NPPES UpdateFebruary 26, 2013
✔ NPI 1780971275 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.
200 GROTON RD, Ayer, MA 01432
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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)

Steward Emergency Physicians, Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

288

Medicare enrollment records show 288 clinicians reassign Medicare billing to Steward Emergency Physicians, Inc, which bills Medicare for the services they deliver. Of these, 5 practice within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 7

Emergency Medicine233
Nurse Practitioner46
Internal Medicine4
Family Practice2
Critical Care (Intensivists)1
General Practice1
Orthopedic Surgery1

Nearest to this location (20)

See all 288
Marie Bennett, FNP-BC
Nurse Practitioner
NPI 1215376405
200 GROTON RD
Ayer, MA 01432
(978) 784-9000
✔ PECOS✔ Accepts Medicare0.1 mi
Jonathan Vacik, MD
Emergency Medicine
NPI 1528129640
200 GROTON RD
Ayer, MA 01432
(978) 784-9000
✔ PECOS✔ Accepts Medicare0.1 mi
Steven Balser, M.D.
Emergency Medicine
NPI 1750468393
200 GROTON RD
Ayer, MA 01432
(978) 784-9000
✔ PECOS✔ Accepts Medicare0.1 mi
James Sullivan, MD
Emergency Medicine
NPI 1730161308
60 HOSPITAL RD UMASS MEMORIAL HEALTH ALLIANCE CLINTON HOSPITAL
Leominster, MA 01453
(978) 466-2451
✔ PECOS✔ Accepts Medicare10.0 mi
Leewood Lane, MD
Emergency Medicine
NPI 1124018734
60 HOSPITAL RD
Leominster, MA 01453
(978) 466-2994
✔ PECOS✔ Accepts Medicare10.0 mi
Melissa Bernier, NP
Nurse Practitioner
NPI 1659772911
220 RESEARCH PLACE STE 220
North Chelmsford, MA 01863
(978) 459-6737
✔ PECOS11 mi
Randy Kring, M.D.
Emergency Medicine
NPI 1124412382
133 OLD ROAD TO 9 ACRE COR
Concord, MA 01742
(978) 369-1400
✔ PECOS✔ Accepts Medicare12 mi
Alexander Brough, MD
Emergency Medicine
NPI 1396752424
295 VARNUM AVE LOWELL GENERAL HOSPITAL
Lowell, MA 01854
(978) 937-6000
✔ PECOS✔ Accepts Medicare13 mi
Kimberly Morton, M.D.
Emergency Medicine
NPI 1326176074
295 VARNUM AVE
Lowell, MA 01854
(781) 937-4545
✔ PECOS✔ Accepts Medicare13 mi
Kunwarjit Garcha, FNP-BC
Nurse Practitioner
NPI 1710358577
161 JACKSON ST
Lowell, MA 01852
(978) 937-9700
✔ PECOS14 mi
Christina Hernon, MD
Emergency Medicine
NPI 1437132693
157 UNION ST DEPARTMENT OF EMERGENCY MEDICINE
Marlborough, MA 01752
(508) 421-1400
✔ PECOS✔ Accepts Medicare15 mi
Daniel Kelleher, NP
Nurse Practitioner
NPI 1508166646
157 UNION ST DEPARTMENT OF EMERGENCY MEDICINE
Marlborough, MA 01752
(508) 421-1400
✔ PECOS✔ Accepts Medicare15 mi
Myles Jen Kin, D.O.
Emergency Medicine
NPI 1669766135
9 VILLAGE INN RD
Westminster, MA 01473
(978) 223-9266
✔ PECOS17 mi
Maria Sellitto, APRN, BC, MSN, FNP
Nurse Practitioner
NPI 1295911337
790 BOSTON ROAD
Billerica, MA 01821
(781) 505-8700
✔ PECOS✔ Accepts Medicare18 mi
Daniel Cohen, MD
Emergency Medicine
NPI 1629190491
41 MALL RD
Burlington, MA 01805
(781) 744-8000
✔ PECOS✔ Accepts Medicare20 mi
Tucker Webb, M.D.
Emergency Medicine
NPI 1811218555
41 MALL RD LAHEY HOSPITAL AND MEDICAL CENTER
Burlington, MA 01805
(781) 744-8100
✔ PECOS✔ Accepts Medicare20 mi
Natalie Oconnor, NP
Nurse Practitioner
NPI 1235778945
30 BEACON HILL RD
Windham, NH 03087
(603) 845-7800
✔ PECOS✔ Accepts Medicare23 mi
Kady Bonica, FNP
Nurse Practitioner
NPI 1578272621
414 UNION ST
Ashland, MA 01721
(508) 881-7606
✔ PECOS✔ Accepts Medicare23 mi
Scott Arthur, APRN
Nurse Practitioner
NPI 1922479799
70 EAST STREET
Methuen, MA 01844
(978) 687-0156
✔ PECOS✔ Accepts Medicare23 mi
Jamie Allen, D.O.
Critical Care (Intensivists)
NPI 1194187435
565 TURNPIKE ST STE 85
North Andover, MA 01845
(978) 689-2247
✔ PECOS✔ Accepts Medicare24 mi
See all 288 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 Steward Emergency Physicians, Inc's NPI number?

The NPI number for Steward Emergency Physicians, Inc is 1780971275. It was assigned to this organization in the NPPES registry on July 5, 2011.

Where is Steward Emergency Physicians, Inc located?

Steward Emergency Physicians, Inc is located at 200 Groton Rd, Ayer, MA 01432. The listed phone number is (978) 784-9000.

What is Steward Emergency Physicians, Inc's specialty?

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

Is Steward Emergency Physicians, Inc enrolled in Medicare?

Yes. Steward Emergency Physicians, Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Steward Emergency Physicians, Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 288 clinicians in 7 Medicare specialties reassign their Medicare billing to Steward Emergency Physicians, 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 (233), Nurse Practitioner (46) and Internal Medicine (4). Of these, 5 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Steward Emergency Physicians, Inc accept?

Health plans from WellSense Health Plan list Steward Emergency Physicians, 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 Steward Emergency Physicians, Inc was last updated on February 26, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.