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DR. KATHERINE ELIZABETH STEWART MD
NPI 1992321954
Emergency Medicine in Portland, ME

Active since June 24, 2020PECOS EnrolledAccepts Medicare Assignment
22 BRAMHALL ST, PORTLAND, ME 04102(207) 662-2381 Get Directions Write a Review

NPPES record last updated: May 1, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 2, 2025, Jun 26, 2020 (2 updates tracked since 2020).

About Dr. Katherine Elizabeth Stewart Md NPPES

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

DR. KATHERINE ELIZABETH STEWART MD (NPI 1992321954) is an individual emergency medicine provider in Portland, Maine, licensed in Maine (MD28948) and active in the NPI registry since June 2020. She is enrolled in Medicare PECOS, is affiliated with Maine Medical Center, and maintains 4 additional practice locations.

NPPES Registry Identity

NPI1992321954
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameDR. KATHERINE ELIZABETH STEWARTCredential: MD
Location Address22 BRAMHALL STPortland, ME 04102-3134
Mailing Address22 Bramhall StPortland, ME 04102-3134 · (207) 662-2381
Phone(207) 662-2381
Sole ProprietorNo
Medical School CMSUniversity Of Rochester School Of Medicine And DentistryGraduated 2020
Enumeration DateJune 24, 2020
Last NPPES UpdateMay 1, 20252 updates tracked since enumeration
NPPES CertifiedMay 1, 2025
✔ NPI 1992321954 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in ME · MD28948✔ Licensed in RI · MD19935
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.
22 BRAMHALL ST, Portland, ME 04102
Open in Google Maps ↗

Secondary Practice Locations 4

Location 1593 Eddy StProvidence, RI 02903-4923 · Phone (401) 444-6489
Location 2335 Brighton AvePortland, ME 04102-2363 · Phone (207) 662-0111 · Fax (207) 662-8133
Location 325 June StSanford, ME 04073-2621 · Phone (207) 490-7450 · Fax (207) 490-7452
Location 41 Medical Center DrBiddeford, ME 04005-9422 · Phone (207) 294-5000 · Fax (207) 294-5227

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Katherine Elizabeth Stewart 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 ID4789008897
PECOS Enrollment IDI20250507000940
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.

Areas of Expertise CMS Part B claims 2

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.
69 services69 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.
21 services21 patients

Hospital Affiliations CMS Care Compare 2

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

Maine Medical Center

Acute Care Hospitals · Portland, ME
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number200009
Location22 Bramhall StPortland, ME 04102 · Cumberland County
Emergency services Birthing friendly

The Miriam Hospital

Acute Care Hospitals · Providence, RI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number410012
Location164 Summit AvenueProvidence, RI 02906 · Providence County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 04102 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
$86.72 typical visit price
range $56.28 – $169.96
Typical copayment $21.68 (range $14.07 – $42.49)
Most-billed visit code 99203
Established Patient
$99.18 typical visit price
range $18.22 – $138.92
Typical copayment $24.79 (range $4.55 – $34.73)
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.

ABBY LYNN LABRECQUE PA-C
Physician Assistant (Medical)
22 BRAMHALL ST
PORTLAND, ME 04102
Cumberland County (207) 662-8111
TEGAN SWIFT RD
Dietitian, Registered
22 BRAMHALL ST
PORTLAND, ME 04102
Cumberland County (207) 662-4238
DEREK POULIN DO
Anesthesiology
22 BRAMHALL ST
PORTLAND, ME 04102
Cumberland County (207) 662-2526
MATTHEW SCOTT AUSTIN CRNA
Nurse Anesthetist, Certified Registered
22 BRAMHALL ST
PORTLAND, ME 04102
Cumberland County (207) 662-2526
MADELINE YOUNGBERG MD
Internal Medicine
22 BRAMHALL ST
PORTLAND, ME 04102
Cumberland County (207) 662-0111
ERICA BRASLEY MD
Student in an Organized Health Care Education/Training Program
22 BRAMHALL ST
PORTLAND, ME 04102
Cumberland County (207) 662-0111
REBECCA ROSE LIGHTMAN
Internal Medicine
22 BRAMHALL ST
PORTLAND, ME 04102
Cumberland County (207) 662-7060
DR. LUKE PATRICK KEFFER MD, MBA
Student in an Organized Health Care Education/Training Program
22 BRAMHALL ST
PORTLAND, ME 04102
Cumberland County (207) 662-0111

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 Katherine Stewart's NPI number?

The NPI number for Katherine Stewart is 1992321954. It was assigned to this individual provider in the NPPES registry on June 24, 2020.

Where is Katherine Stewart located?

Katherine Stewart practices at 22 Bramhall St, Portland, ME 04102. The listed phone number is (207) 662-2381.

What is Katherine Stewart's specialty?

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

Is Katherine Stewart enrolled in Medicare?

Yes. Katherine Stewart 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.

Is Katherine Stewart affiliated with any hospitals?

According to CMS data, Katherine Stewart is affiliated with Maine Medical Center and The Miriam Hospital.

When was this NPI record last updated?

The NPPES record for Katherine Stewart was last updated on May 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.