Karen Brennan, CRNA - Medicare Certified Registered Nurse Anesthetist (crna) in Rockport, ME

Karen Brennan, CRNA is a medicare enrolled "Registered Nurse" in Rockport, Maine. She went to University Of Massachusetts Medical School and graduated in 1993 and has 31 years of diverse experience with area of expertise as Certified Registered Nurse Anesthetist (crna). She is a member of the group practice Gbaa Holdings Pllc and her current practice location is 6 Glen Cove Dr, Rockport, Maine. You can reach out to her office (for appointments etc.) via phone at (207) 921-8215.

Karen Brennan is licensed to practice in Massachusetts (license number 158976) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1023162328.

Contact Information

Karen Brennan, CRNA
6 Glen Cove Dr,
Rockport, ME 04856-4240
(207) 921-8215
(207) 921-5302

Map and Direction




Provider's Profile

Full NameKaren Brennan
GenderFemale
SpecialityCertified Registered Nurse Anesthetist (crna)
Experience31 Years
Location6 Glen Cove Dr, Rockport, Maine
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Karen Brennan attended and graduated from University Of Massachusetts Medical School in 1993
  NPI Data:
  • NPI Number: 1023162328
  • Provider Enumeration Date: 01/23/2007
  • Last Update Date: 05/10/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 7214979970
  • Enrollment ID: I20050524000481

Medical Identifiers

Medical identifiers for Karen Brennan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023162328NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
163W00000XRegistered Nurse 158976 (Massachusetts)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Gbaa Holdings Pllc478994464634

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Karen Brennan allows following entities to bill medicare on her behalf.
Entity NameMatrix Anesthesia Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700028032
PECOS PAC ID: 8820136377
Enrollment ID: O20091210000301
Entity NameCommunity Anesthesia Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1114257136
PECOS PAC ID: 9537283817
Enrollment ID: O20100824001034
Entity NameGbaa Holdings Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1790299592
PECOS PAC ID: 4789944646
Enrollment ID: O20180214001714

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Karen Brennan is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Karen Brennan, CRNA
12 Douglas St, #2,
South Boston, MA 02127-4105

Ph: () -
Karen Brennan, CRNA
6 Glen Cove Dr,
Rockport, ME 04856-4240

Ph: (207) 921-8215

Reviews and Comments


Registered Nurse Nurses in Rockport, ME

Dennis Joseph Mcdowell,
Registered Nurse
Medicare: Not Enrolled in Medicare
Practice Location: 6 Glen Cove Dr, Rockport, ME 04856
Phone: 207-301-8000    
Mr. Jordan Douglas Palmer, RN, CRNA, DNP
Registered Nurse
Medicare: Accepting Medicare Assignments
Practice Location: 6 Glen Cove Dr, Rockport, ME 04856
Phone: 256-755-0872    
Kara Brown,
Registered Nurse
Medicare: Not Enrolled in Medicare
Practice Location: 6 Glen Cove Dr, Rockport, ME 04856
Phone: 207-301-8000    
Susan E Hamilton,
Registered Nurse
Medicare: Accepting Medicare Assignments
Practice Location: 6 Glen Cove Dr, Rockport, ME 04856
Phone: 207-921-8969    
Mrs. Brenda K Berry, RN CEN
Registered Nurse
Medicare: Not Enrolled in Medicare
Practice Location: 731 Commercial Street, Rockport, ME 04856
Phone: 207-921-3999    Fax: 207-921-3990

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.