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BRIAN GILLIS DO
NPI 1386711877
Colon & Rectal Surgery in Oakland, ME

Active since November 29, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 20D0974828 · Waiver
8 WATER ST, OAKLAND, ME 04963(207) 465-3003(207) 465-7352 Get Directions Write a Review

NPPES record last updated: May 26, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Brian Gillis Do NPPES

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

BRIAN GILLIS DO (NPI 1386711877) is an individual colon & rectal surgery provider in Oakland, Maine, licensed in Maine (1513) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through June 18, 2028, and is affiliated with St Mary's Regional Medical Center.

NPPES Registry Identity

NPI1386711877
Entity TypeIndividualMale
Primary Taxonomy208C00000X
Provider Legal NameBRIAN GILLISCredential: DO
Location Address8 WATER STOakland, ME 04963-4956
Mailing Address8 Water StOakland, ME 04963-4956 · (207) 465-3003 · Fax (207) 465-7352
Phone(207) 465-3003
Fax(207) 465-7352
Sole ProprietorYes
Medical School CMSUniversity Of New England, College Of Osteo MedicineGraduated 1995
Enumeration DateNovember 29, 2006
Last NPPES UpdateMay 26, 2008
✔ NPI 1386711877 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyColon & Rectal SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208C00000X
License✔ Licensed in ME · 1513
Definition
A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.
8 WATER ST, Oakland, ME 04963
Open in Google Maps ↗

Other Identifiers 8

Medicare PIN100013931ME
Other2274735Aetna
Medicare PINMM7908
OtherM177120Cigna
OtherH00479Harvard Pilgrim Healthcar
Medicare UPINH00479ME
Other038507ME · Anthem
Medicaid154490099ME

Accepted Insurance

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

Brian Gillis 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 ID8123009289
PECOS Enrollment IDI20040526000213, I20260512001948
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 Reassignment

Medicare enrollment records show Brian Gillis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Newman Memorial Hospital, Inc
1,640 mi
Clinic/Center
227 S MAIN ST
Mooreland, OK 73852
  • Reassigned Medicare billing, Oklahoma enrollment
  • Also billed through NPI 1083617807 (Oklahoma)
  • 62 clinicians in this Medicare group
NPI 1497639181 (580) 938-2551

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 20D0974828

Brian J Gillis Do PA · Oakland, ME
Active · expires Jun 18, 2028
CLIA Number20D0974828
Laboratory TypePhysician Office
Certificate Effective DateJune 19, 2026
Certificate Expiration DateJune 18, 2028
Laboratory DirectorBrian J. Gillis Do
Laboratory Phone(207) 465-3003
Laboratory LocationBrian J Gillis Do PA8 Water Street, Oakland, ME 04963
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 10

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.

Dilation of anus using an endoscope 46604
This is a medical procedure where a small, flexible tube with a light (endoscope) is used to gently expand the anus for examination purposes. It helps doctors view and treat issues in the lower digestive tract. It's safe and typically painless.
122 services86 patients
Injection of hemorrhoid 46500
An injection for hemorrhoids involves administering a substance into the swollen tissue to reduce its size. It's a simple, quick procedure, performed in a doctor's office, to help alleviate discomfort and inflammation.
120 services87 patients
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.
103 services74 patients
Non-needle measurement and recording of electrical activity of muscles at bladder and bowel openings 51784
This procedure involves the use of non-invasive devices to record the electrical activity of muscles at specific body openings. It's helpful in understanding muscle function and can assist in diagnosing certain conditions.
77 services54 patients
Test for tone and sensation of rectum and anus 91120
This procedure checks the health of the lower digestive tract. The doctor gently examines the area to assess its muscle strength and sensitivity. This helps in detecting any abnormal conditions. It's a standard, safe procedure with minimal discomfort.
77 services54 patients
Study of rectum sensitivity and function 91122
This procedure examines the rectum's sensitivity and functionality. It involves a small, soft balloon inserted into the rectum and inflated to various degrees. The goal is to assess how well your rectum can sense and respond to different volumes. It's a crucial test for diagnosing certain digestive issues.
76 services53 patients

Hospital Affiliations CMS Care Compare 2

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

St Mary's Regional Medical Center

Acute Care Hospitals · Lewiston, ME
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number200034
Location93 Campus Avenue - PO Box 291Lewiston, ME 04243 · Androscoggin County
Emergency services

Newman Memorial Hospital

Critical Access Hospitals · Shattuck, OK
OwnershipGovernment - Local
CMS Certification Number371336
Location905 South Main StreetShattuck, OK 73858 · Ellis County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 04963 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
$82.58 typical visit price
range $53.26 – $162.77
Typical copayment $20.64 (range $13.31 – $40.69)
Most-billed visit code 99203
Established Patient
$66.74 typical visit price
range $16.90 – $132.79
Typical copayment $16.68 (range $4.22 – $33.19)
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.

Reported Quality Measures

Care Plan
Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…
100%154 patients5/55-star benchmark: 100%
Photodocumentation of Cecal Intubation
The rate of screening and surveillance colonoscopies for which photodocumentation of landmarks of cecal intubation is performed to establish a complete examination
100%34 patients
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
100%188 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 5

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

DIANNE MARIE HOWARD MORAND LCSW
Social Worker (Clinical)
8 WATER ST
OAKLAND, ME 04963
Kennebec County (207) 530-0880
WATERS EDGE THERAPY, INC.
Community/Behavioral Health
8 WATER ST, SUITE 2
OAKLAND, ME 04963
Kennebec County (207) 530-0880
BRIAN J GILLIS DO PA
Colon & Rectal Surgery
8 WATER ST, SUITE 2
OAKLAND, ME 04963
Kennebec County (207) 465-3003
DR BRIAN J GILLIS AND ASSOCIATES
Colon & Rectal Surgery
8 WATER ST, SUITE 2
OAKLAND, ME 04963
Kennebec County (207) 465-3003
BRIAN J GILLIS DOPA
Colon & Rectal Surgery
8 WATER ST
OAKLAND, ME 04963
Kennebec County (207) 465-3003

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 Brian Gillis's NPI number?

The NPI number for Brian Gillis is 1386711877. It was assigned to this individual provider in the NPPES registry on November 29, 2006.

Where is Brian Gillis located?

Brian Gillis practices at 8 Water St, Oakland, ME 04963. The listed phone number is (207) 465-3003.

What is Brian Gillis's specialty?

The primary specialty registered for this NPI is Colon & Rectal Surgery with taxonomy code 208C00000X.

Is Brian Gillis enrolled in Medicare?

Yes. Brian Gillis 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 organization bills Medicare for Brian Gillis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Brian Gillis reassigns Medicare benefits to Newman Memorial Hospital, Inc (Mooreland, OK). The 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 Brian Gillis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Does Brian Gillis hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 20D0974828) is associated with this NPI, valid through June 18, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Brian Gillis accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Oklahoma, Mending Health and UnitedHealthcare list Brian Gillis 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 Brian Gillis affiliated with any hospitals?

According to CMS data, Brian Gillis is affiliated with St Mary's Regional Medical Center and Newman Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Brian Gillis was last updated on May 26, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.