1. Home
  2. Directory
  3. Maine
  4. Scarborough
  5. Pediatrics
  6. NPI Profile

MARK EDWARD ALEXANDER MD
NPI 1013907666
Pediatrics - Pediatric Cardiology in Scarborough, ME

Active since October 25, 2005PECOS EnrolledAccepts Medicare Assignment
98.06/100
CMS Quality Rating
71 US ROUTE 1 STE C, SCARBOROUGH, ME 04074(207) 883-5532(207) 883-5552 Get Directions Write a Review

NPPES record last updated: February 23, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mark Edward Alexander Md NPPES

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

MARK EDWARD ALEXANDER MD (NPI 1013907666) is an individual pediatric cardiology provider in Scarborough, Maine, licensed in Maine (MD22858) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Boston Children's Hospital, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1013907666
Entity TypeIndividualMale
Primary Taxonomy2080P0202X
Provider Legal NameMARK EDWARD ALEXANDERCredential: MD
Location Address71 US ROUTE 1 STE CScarborough, ME 04074-7174
Mailing Address71 Us Route 1 Ste CScarborough, ME 04074-7174 · (207) 883-5532 · Fax (207) 883-5552
Phone(207) 883-5532
Fax(207) 883-5552
Sole ProprietorNo
Medical School CMSNorthwestern University Feinberg Medical SchoolGraduated 1985
Enumeration DateOctober 25, 2005
Last NPPES UpdateFebruary 23, 2026
NPPES CertifiedFebruary 23, 2026
✔ NPI 1013907666 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyPediatrics · Pediatric CardiologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0202X
Licenses✔ Licensed in ME · MD22858✔ Licensed in MA · 77492
Definition
A pediatric cardiologist provides comprehensive care to patients with cardiovascular problems. This specialist is skilled in selecting, performing and evaluating the structural and functional assessment of the heart and blood vessels, and the clinical evaluation of cardiovascular disease.
Also ListedInternal Medicine · Adult Congenital Heart DiseaseTaxonomy 207RA0002X · License MD22858 (ME)
Also ListedInternal Medicine · Clinical Cardiac ElectrophysiologyTaxonomy 207RC0001X · License 77492 (MA), MD22858 (ME)
Also ListedPediatricsTaxonomy 208000000X · License MD22858 (ME)
71 US ROUTE 1 STE C, Scarborough, ME 04074
Open in Google Maps ↗

Secondary Practice Locations 3

Location 1300 Longwood AveBoston, MA 02115-5724 · Phone (617) 355-2793
Location 296 Campus DrScarborough, ME 04074-7163 · Phone (207) 885-9905 · Fax (207) 396-5600
Location 322 Bramhall StPortland, ME 04102-3134 · Phone (207) 885-9905 · Fax (207) 396-5600

Other Identifiers 1

Medicaid3183467MA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, 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

Mark Edward Alexander 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 ID8325100910
PECOS Enrollment IDI20081216000131
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

5

Medicare enrollment records show Mark Alexander reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mainehealth
2.1 mi
Family Medicine
300 PROFESSIONAL DR
Scarborough, ME 04074
  • Reassigned Medicare billing, Maine enrollment
  • 3,140 clinicians in this Medicare group
NPI 1497068969 (207) 883-3491
Maine Medical Partners
2.6 mi
Cardiovascular Disease
96 CAMPUS DR, SUITE 1
Scarborough, ME 04074
  • Reassigned Medicare billing, Maine enrollment
  • 229 clinicians in this Medicare group
NPI 1386937175 (207) 885-9905
York Hospital
34 mi
General Acute Care Hospital
15 HOSPITAL DR
York, ME 03909
  • Reassigned Medicare billing, Maine enrollment
  • 347 clinicians in this Medicare group
NPI 1376528398 (207) 361-2398
Boston Childrens Heart Foundation Inc
94 mi
Pediatric Cardiology
300 LONGWOOD AVE
Boston, MA 02115
  • Reassigned Medicare billing, Massachusetts enrollment
  • 220 clinicians in this Medicare group
NPI 1982680922 (617) 355-6793
Coastal Medical Associates
102 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 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.

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.
40 services32 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.
24 services18 patients
Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days 93294
This procedure evaluates your pacemaker system remotely for up to 90 days. It checks whether single, dual, multiple lead, or leadless pacemakers are working properly. It's a safe, convenient way to ensure your heart device is functioning optimally.
13 services11 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
13 services13 patients
Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018
An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.
11 services11 patients

Hospital Affiliations CMS Care Compare

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

Boston Children's Hospital

Childrens · Boston, MA
OwnershipVoluntary non-profit - Private
CMS Certification Number223302
Location300 Longwood AvenueBoston, MA 02115 · Suffolk County
Emergency services

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

98.06/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality86.13
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 8

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

MISS MEGAN ELIZABETH SMETANA CPNP-AC
Nurse Practitioner (Pediatrics)
71 US ROUTE 1 STE C
SCARBOROUGH, ME 04074
Cumberland County (207) 883-5532
ASHISH SAINI MD
Pediatrics (Pediatric Cardiology)
71 US ROUTE 1 STE C
SCARBOROUGH, ME 04074
Cumberland County (207) 883-5532
AMEDEE ST.PIERRE PSYD
Psychologist (Clinical)
71 US ROUTE 1 STE C
SCARBOROUGH, ME 04074
Cumberland County (207) 662-1442
DR. ALAN FREDERICK KEOHANE RILEY MD
Pediatrics (Pediatric Cardiology)
71 US ROUTE 1 STE C
SCARBOROUGH, ME 04074
Cumberland County (207) 883-5532
WARREN G HATHAWAY LCSW
Social Worker (Clinical)
71 US ROUTE 1 STE C
SCARBOROUGH, ME 04074
Cumberland County (207) 883-5532
DR. THOMAS A MILLER DO
Pediatrics (Pediatric Cardiology)
71 US ROUTE 1 STE C
SCARBOROUGH, ME 04074
Cumberland County (207) 883-5532
BRIANA L COSTELLO LCSW
Social Worker (Clinical)
71 US ROUTE 1 STE C
SCARBOROUGH, ME 04074
Cumberland County (207) 883-5532
LAUREN M ANDRADE M.D.
Internal Medicine (Adult Congenital Heart Disease)
71 US ROUTE 1 STE C
SCARBOROUGH, ME 04074
Cumberland County (207) 883-5532

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 Alexander's NPI number?

The NPI number for Mark Alexander is 1013907666. It was assigned to this individual provider in the NPPES registry on October 25, 2005.

Where is Mark Alexander located?

Mark Alexander practices at 71 Us Route 1 Ste C, Scarborough, ME 04074. The listed phone number is (207) 883-5532.

What is Mark Alexander's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Is Mark Alexander enrolled in Medicare?

Yes. Mark Alexander 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 Alexander's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Alexander reassigns Medicare benefits to 5 organizations: Mainehealth (Scarborough, ME), Maine Medical Partners (Scarborough, ME), York Hospital (York, ME), Boston Childrens Heart Foundation Inc (Boston, 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 Mark Alexander's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Alexander accept?

Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Mark Alexander 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 Alexander affiliated with any hospitals?

According to CMS data, Mark Alexander is affiliated with Boston Children's Hospital.

When was this NPI record last updated?

The NPPES record for Mark Alexander was last updated on February 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.