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MRS. MICHELLE SUSAN MCMAHON-DOWNER MD
NPI 1720113632
Emergency Medicine in Framingham, MA

Active since February 22, 2007PECOS EnrolledAccepts Medicare Assignment
115 LINCOLN ST, FRAMINGHAM, MA 01702(508) 383-1104(508) 383-1138 Get Directions Write a Review

NPPES record last updated: August 6, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 6, 2026, Feb 14, 2017 (2 updates tracked since 2017).

About Mrs. Michelle Susan Mcmahon-downer Md NPPES

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

MRS. MICHELLE SUSAN MCMAHON-DOWNER MD (NPI 1720113632) is an individual emergency medicine provider in Framingham, Massachusetts, licensed in Massachusetts (231988) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS, is affiliated with Emerson Hospital -, and is a graduate of Other (2003).

NPPES Registry Identity

NPI1720113632
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameMRS. MICHELLE SUSAN MCMAHON-DOWNERCredential: MD
Location Address115 LINCOLN STFramingham, MA 01702-6358
Mailing Address115 Lincoln Street, Metrowest Emergency PhysiciansFromingham, MA 01702 · (508) 383-1104 · Fax (508) 383-1138
Phone(508) 383-1104
Fax(508) 383-1138
Sole ProprietorNo
Medical School CMSOtherGraduated 2003
Enumeration DateFebruary 22, 2007
Last NPPES UpdateAugust 6, 20262 updates tracked since enumeration
NPPES CertifiedAugust 6, 2026
✔ NPI 1720113632 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in MA · 231988✔ Licensed in RI · 12264
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.
115 LINCOLN ST, Framingham, MA 01702
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Other Names 1

Former Name (1)Michelle Mcmahon

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.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

Mrs. Michelle Susan Mcmahon-downer Md 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 ID2567553498
PECOS Enrollment IDI20070807000798
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

3

Medicare enrollment records show Michelle Mcmahon-downer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Emerson Emergency Physicians LLC
12 mi
Emergency Medicine
133 OLD ROAD TO 9 ACRE COR
Concord, MA 01742
  • Reassigned Medicare billing, Massachusetts enrollment
  • 35 clinicians in this Medicare group
NPI 1972742542 (978) 287-3694
Emergency Physician Associates Of Massachusetts PC
19 mi
Emergency Medicine
123 SUMMER ST
Worcester, MA 01608
  • Reassigned Medicare billing, Massachusetts enrollment
  • 90 clinicians in this Medicare group
NPI 1730885252 (508) 363-5000
Coastal Medical Associates
25 mi
Anesthesiology
55 FOGG RD
Weymouth, MA 02190
  • Reassigned Medicare billing, Massachusetts enrollment
  • 671 clinicians in this Medicare group
NPI 1932175684 (781) 340-4293

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 7

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
387 services370 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
135 services124 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
90 services87 patients
Electrocardiogram (ecg) 1 to 3 leads with review by physician only 93042
An Electrocardiogram (ECG) is a non-invasive test that records the electrical activity of your heart. 1 to 3 leads or sensors are placed on your body to capture this data. A physician then reviews the results to evaluate your heart's health.
51 services50 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
37 services37 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
27 services18 patients

Hospital Affiliations CMS Care Compare 3

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

Emerson Hospital -

Acute Care Hospitals · W Concord, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220084
Location133 Old Road To 9 Acre CornerW Concord, MA 01742 · Middlesex County
Emergency services Birthing friendly

South Shore Hospital

Acute Care Hospitals · South Weymouth, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220100
Location55 Fogg RoadSouth Weymouth, MA 02190 · Norfolk County
Emergency services Birthing friendly

Metrowest Medical Center

Acute Care Hospitals · Framingham, MA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220175
Location115 Lincoln StreetFramingham, MA 01701 · Middlesex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01702 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
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
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 20

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

JORGE ALEJANDRO ALZATE CRNA
Nurse Anesthetist, Certified Registered
115 LINCOLN ST
FRAMINGHAM, MA 01702
Middlesex County (508) 383-1000
JAVIER CONTRERAS YAMETTI MD
Student in an Organized Health Care Education/Training Program
115 LINCOLN ST
FRAMINGHAM, MA 01702
Middlesex County (508) 383-1000
AMY ADDO
Student in an Organized Health Care Education/Training Program
115 LINCOLN ST
FRAMINGHAM, MA 01702
Middlesex County (508) 383-1000
SARA BOVE
Student in an Organized Health Care Education/Training Program
115 LINCOLN ST
FRAMINGHAM, MA 01702
Middlesex County (508) 383-1000
ERIC EDUARDO FABARA MD
Student in an Organized Health Care Education/Training Program
115 LINCOLN ST
FRAMINGHAM, MA 01702
Middlesex County (508) 383-1555
REBECA MARTINEZ GONZALEZ MD
Student in an Organized Health Care Education/Training Program
115 LINCOLN ST
FRAMINGHAM, MA 01702
Middlesex County (508) 383-1000
REUBEN NEJAT JACOBSON
Student in an Organized Health Care Education/Training Program
115 LINCOLN ST
FRAMINGHAM, MA 01702
Middlesex County (508) 383-1000
LUNG HEALTH CENTER OF METROWEST LLC
Internal Medicine (Pulmonary Disease)
115 LINCOLN ST
FRAMINGHAM, MA 01702
Middlesex County (508) 383-1525

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 Michelle Mcmahon-downer's NPI number?

The NPI number for Michelle Mcmahon-downer is 1720113632. It was assigned to this individual provider in the NPPES registry on February 22, 2007. The provider is also known as Michelle Mcmahon.

Where is Michelle Mcmahon-downer located?

Michelle Mcmahon-downer practices at 115 Lincoln St, Framingham, MA 01702. The listed phone number is (508) 383-1104.

What is Michelle Mcmahon-downer's specialty?

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

Is Michelle Mcmahon-downer enrolled in Medicare?

Yes. Michelle Mcmahon-downer 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 Michelle Mcmahon-downer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michelle Mcmahon-downer reassigns Medicare benefits to 3 organizations: Emerson Emergency Physicians LLC (Concord, MA), Emergency Physician Associates Of Massachusetts PC (Worcester, MA) and Coastal Medical Associates (Weymouth, MA). 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 Michelle Mcmahon-downer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michelle Mcmahon-downer accept?

Health plans from Taro Health list Michelle Mcmahon-downer 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 Michelle Mcmahon-downer affiliated with any hospitals?

According to CMS data, Michelle Mcmahon-downer is affiliated with Emerson Hospital -, South Shore Hospital and Metrowest Medical Center.

When was this NPI record last updated?

The NPPES record for Michelle Mcmahon-downer was last updated on August 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.