1. Home
  2. Directory
  3. Massachusetts
  4. Newton
  5. Emergency Medicine
  6. NPI Profile

MARK FRANCIS LEMONS MD FACEP
NPI 1831159458
Emergency Medicine in Newton, MA

Active since March 27, 2006PECOS Enrolled
2014 WASHINGTON ST, NEWTON, MA 02462(617) 243-6040(617) 243-6924 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Mark Francis Lemons Md Facep NPPES

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

MARK FRANCIS LEMONS MD FACEP (NPI 1831159458) is an individual emergency medicine provider in Newton, Massachusetts, licensed in Massachusetts (54537) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1831159458
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameMARK FRANCIS LEMONSCredential: MD FACEP
Location Address2014 WASHINGTON STNewton, MA 02462
Mailing Address2014 Washington StNewton, MA 02462 · (617) 243-6040 · Fax (617) 243-6924
Phone(617) 243-6040
Fax(617) 243-6924
Sole ProprietorNo
Enumeration DateMarch 27, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1831159458 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in MA · 54537
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.
2014 WASHINGTON ST, Newton, MA 02462
Open in Google Maps ↗

Other Identifiers 5

Medicaid3017061MA
OtherJ06090Blue Shield
Other3900199United
Other438976Hp
Other054537Tufts

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 (PECOS)

Mark Francis Lemons Md Facep is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

2

Medicare enrollment records show Mark Lemons reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Newton Wellesley Emergency Medicine Specialist, P .C.
Same address
Emergency Medicine
2014 WASHINGTON ST
Newton, MA 02462
  • Reassigned Medicare billing, Massachusetts enrollment
  • Medicare enrollment name: Newton Wellesley Emergency Medicine Specialist PC
  • 46 clinicians in this Medicare group
NPI 1346355526 (617) 243-6040
Mass General Brigham Medical Group, Inc.
31 mi
Internal Medicine
30 TUSCAN BOULEVARD
Salem, NH 03079
  • Reassigned Medicare billing, Massachusetts enrollment
  • 181 clinicians in this Medicare group
NPI 1083360200 (857) 282-7014

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 5

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.
428 services415 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.
112 services112 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.
63 services63 patients
Ultrasound of heart, follow-up 93308
A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.
21 services21 patients
Limited ultrasound scan of abdomen 76705
A limited ultrasound scan of the abdomen is a non-invasive imaging test. It uses sound waves to produce images of the abdominal organs such as the liver, gallbladder, spleen, pancreas, and kidneys. This helps to identify any abnormalities or issues.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02462 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.

DR. ANDREA L RUSSO M.D.
Radiology (Radiation Oncology)
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 219-1200
MAUREEN LAVELLE LICSW
Social Worker (Clinical)
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 243-6664
SHALYNN DOHERTY
Physician Assistant
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 831-7100
MR. KEVIN YAN KOENDERS PA-C
Physician Assistant (Surgical)
2014 WASHINGTON ST, DEPARTMENT OF ORTHOPEDICS
NEWTON, MA 02462
Middlesex County (617) 219-1674
NATHAN DANIEL BUCKLEY PA-C
Physician Assistant (Surgical)
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 243-6000
DR. RONALD KENNETH PYE M.D.
Pediatrics (Neonatal-Perinatal Medicine)
2014 WASHINGTON ST, SCN 6 NORTH
NEWTON, MA 02462
Middlesex County (617) 243-6296
DR. TODD EARL ABBOTT M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
2014 WASHINGTON ST, NEWTON-WELLESLEY HOSPITAL
NEWTON, MA 02462
Middlesex County (434) 964-1637
DIANE MARIE POULIN RN,NP
Nurse Practitioner (Adult Health)
2014 WASHINGTON ST, NEWTON WELLESLEY HOSPITAL DEPT. OF ANESTHESIA
NEWTON, MA 02462
Middlesex County (617) 243-6298

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 Lemons's NPI number?

The NPI number for Mark Lemons is 1831159458. It was assigned to this individual provider in the NPPES registry on March 27, 2006.

Where is Mark Lemons located?

Mark Lemons practices at 2014 Washington St, Newton, MA 02462. The listed phone number is (617) 243-6040.

What is Mark Lemons's specialty?

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

Is Mark Lemons enrolled in Medicare?

Yes. Mark Lemons is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mark Lemons's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Lemons reassigns Medicare benefits to 2 organizations: Newton Wellesley Emergency Medicine Specialist, P .C. (Newton, MA) and Mass General Brigham Medical Group, Inc. (Salem, NH). 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 Lemons's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Lemons accept?

Health plans from Taro Health list Mark Lemons 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 Mark Lemons was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.