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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. CASHEL O'BRIEN DO
NPI 1093275612
Internal Medicine - Cardiovascular Disease in Portland, ME

Active since March 20, 2019PECOS EnrolledAccepts Medicare Assignment
98.06/100
CMS Quality Rating
22 BRAMHALL ST, PORTLAND, ME 04102(207) 662-4618(207) 662-6254 Get Directions Write a Review

NPPES record last updated: July 9, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 9, 2026, Mar 5, 2026, Sep 20, 2022 and 1 more (4 updates tracked since 2019).

About Dr. Cashel O'brien Do NPPES

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

DR. CASHEL O'BRIEN DO (NPI 1093275612) is an individual cardiovascular disease provider in Portland, Maine, licensed in Maine (DO3386) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, is affiliated with Maine Medical Center, and maintains 5 additional practice locations.

NPPES Registry Identity

NPI1093275612
Entity TypeIndividualFemale
Primary Taxonomy207RC0000X
Provider Legal NameDR. CASHEL O'BRIENCredential: DO
Location Address22 BRAMHALL STPortland, ME 04102-3134
Mailing Address22 Bramhall StPortland, ME 04102-3134 · (207) 662-4618 · Fax (207) 662-6254
Phone(207) 662-4618
Fax(207) 662-6254
Sole ProprietorNo
Medical School CMSUniversity Of New England, College Of Osteo MedicineGraduated 2019
Enumeration DateMarch 20, 2019
Last NPPES UpdateJuly 9, 20264 updates tracked since enumeration
NPPES CertifiedJuly 9, 2026
✔ NPI 1093275612 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in ME · DO3386
Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Also ListedInternal MedicineTaxonomy 207R00000X · License DO3386 (ME)
Also ListedInternal Medicine · Adolescent MedicineTaxonomy 207RA0000X · License DO3386 (ME)
Also ListedHospitalistTaxonomy 208M00000X · License DO3386 (ME)
22 BRAMHALL ST, Portland, ME 04102
Open in Google Maps ↗

Secondary Practice Locations 5

Location 196 Campus DrScarborough, ME 04074-7163 · Phone (207) 885-9905 · Fax (207) 396-5600
Location 225 June StSanford, ME 04073-2621 · Phone (207) 324-4310 · Fax (207) 490-7999
Location 31 Medical Center DrBiddeford, ME 04005-9422 · Phone (207) 283-7937 · Fax (207) 283-7018
Location 4121 Medical Center Dr Ste 3100Brunswick, ME 04011-2672 · Phone (207) 729-7939 · Fax (207) 808-7894
Location 524 Miles Center WayDamariscotta, ME 04543-4067 · Phone (207) 563-4811 · Fax (207) 810-2380

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. Cashel O'brien Do 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 ID9830427061
PECOS Enrollment IDI20221128001349
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.

Hospital Affiliations CMS Care Compare

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

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
$128.83 typical visit price
range $56.28 – $169.96
Typical copayment $32.20 (range $14.07 – $42.49)
Most-billed visit code 99204
Established Patient
$70.13 typical visit price
range $18.22 – $138.92
Typical copayment $17.53 (range $4.55 – $34.73)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 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 Cashel O'brien's NPI number?

The NPI number for Cashel O'brien is 1093275612. It was assigned to this individual provider in the NPPES registry on March 20, 2019.

Where is Cashel O'brien located?

Cashel O'brien practices at 22 Bramhall St, Portland, ME 04102. The listed phone number is (207) 662-4618.

What is Cashel O'brien's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Cashel O'brien enrolled in Medicare?

Yes. Cashel O'brien 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 Cashel O'brien affiliated with any hospitals?

According to CMS data, Cashel O'brien is affiliated with Maine Medical Center.

When was this NPI record last updated?

The NPPES record for Cashel O'brien was last updated on July 9, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.