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KATHLEEN ELIZABETH BRENNAN M.D.
NPI 1922444900
Family Medicine in Portland, ME

Active since May 16, 2013PECOS Enrolled
22 BRAMHALL ST, PORTLAND, ME 04102(207) 662-6562 Get Directions Write a Review

NPPES record last updated: May 26, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Kathleen Elizabeth Brennan M.d. NPPES

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

KATHLEEN ELIZABETH BRENNAN M.D. (NPI 1922444900) is an individual family medicine provider in Portland, Maine, licensed in Maine (MD21275) and active in the NPI registry since May 2013. She is enrolled in Medicare PECOS, is affiliated with Northern Light Health, and is a graduate of Tufts University School Of Medicine (2013).

NPPES Registry Identity

NPI1922444900
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameKATHLEEN ELIZABETH BRENNANCredential: M.D.
Location Address22 BRAMHALL STPortland, ME 04102-3134
Mailing Address22 Bramhall StPortland, ME 04102-3134 · (207) 662-6562
Phone(207) 662-6562
Sole ProprietorNo
Medical School CMSTufts University School Of MedicineGraduated 2013
Enumeration DateMay 16, 2013
Last NPPES UpdateMay 26, 2020
NPPES CertifiedMay 26, 2020
✔ NPI 1922444900 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in ME · MD21275
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
22 BRAMHALL ST, Portland, ME 04102
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Accepted Insurance

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

Kathleen Elizabeth Brennan M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4284876590
PECOS Enrollment IDI20161121001155
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 Kathleen Brennan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mainehealth
Same address
Infectious Disease
22 BRAMHALL ST
Portland, ME 04102
  • Reassigned Medicare billing, Maine enrollment
  • Also billed through NPI 1639194509 (Maine)
  • 3,140 clinicians in this Medicare group
NPI 1073701157 (207) 662-3067
Maine Medical Partners
0.1 mi
Geriatric Medicine
66 BRAMHALL ST
Portland, ME 04102
  • Reassigned Medicare billing, Maine enrollment
  • Also billed through NPI 1790896876 (Maine)
  • 203 clinicians in this Medicare group
NPI 1790976074 (207) 662-3157

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 4

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
108 services70 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
35 services35 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
31 services28 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
31 services12 patients

Hospital Affiliations CMS Care Compare 2

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

Northern Light Health

Acute Care Hospitals · Portland, ME
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number200008
Location144 State StreetPortland, ME 04101 · Cumberland County
Emergency services Birthing friendly

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

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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Standard wheelchair K0001
DME-Wheelchairs · category DD000N
1 supplier11 claims11 services$17.34 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Kathleen Brennan's NPI number?

The NPI number for Kathleen Brennan is 1922444900. It was assigned to this individual provider in the NPPES registry on May 16, 2013.

Where is Kathleen Brennan located?

Kathleen Brennan practices at 22 Bramhall St, Portland, ME 04102. The listed phone number is (207) 662-6562.

What is Kathleen Brennan's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Kathleen Brennan enrolled in Medicare?

Yes. Kathleen Brennan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Kathleen Brennan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kathleen Brennan reassigns Medicare benefits to 2 organizations: Mainehealth (Portland, ME) and Maine Medical Partners (Portland, ME). 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 Kathleen Brennan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kathleen Brennan accept?

Health plans from Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and Taro Health list Kathleen Brennan 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 Kathleen Brennan affiliated with any hospitals?

According to CMS data, Kathleen Brennan is affiliated with Northern Light Health and Maine Medical Center.

When was this NPI record last updated?

The NPPES record for Kathleen Brennan was last updated on May 26, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.