Dr Brian O'connor, MD - Medicare Internal Medicine in Frederick, MD

Dr Brian O'connor, MD is a medicare enrolled "Internal Medicine - Medical Oncology" physician in Frederick, Maryland. His current practice location is 1562 Opossumtown Pike, Frederick, Maryland. You can reach out to his office (for appointments etc.) via phone at (301) 662-8477.

Dr Brian O'connor is licensed to practice in Maryland (license number D31761) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1174515050.

Contact Information

Dr Brian O'connor, MD
1562 Opossumtown Pike,
Frederick, MD 21702-4337
(301) 662-8477
Not Available

Map and Direction




Physician's Profile

Full NameDr Brian O'connor
GenderMale
SpecialityInternal Medicine - Medical Oncology
Location1562 Opossumtown Pike, Frederick, Maryland
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1174515050
  • Provider Enumeration Date: 08/17/2005
  • Last Update Date: 05/15/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 2567598204
  • Enrollment ID: I20100405000010

Medical Identifiers

Medical identifiers for Dr Brian O'connor such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1174515050NPI-NPPES
28658979OtherAETNA PVN
W575-0002OtherCAREFIRST BCBS GHMSI
523014-01OtherCAREFIRST BCBS MARYLAND
81961100MedicaidMD
971641OtherUNITED

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology D0031761 (Maryland)Secondary
207RX0202XInternal Medicine - Medical Oncology D31761 (Maryland)Primary

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. Dr Brian O'connor allows following entities to bill medicare on his behalf.
Entity NameFrederick Health Medical Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619258225
PECOS PAC ID: 9931341096
Enrollment ID: O20130820000555
Entity NameFrederick Health Hospital Inc
Entity TypePart B Supplier - Radiation Therapy Center
Entity IdentifiersNPI Number: 1891154100
PECOS PAC ID: 0446149256
Enrollment ID: O20160516001434

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. Dr Brian O'connor 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
Dr Brian O'connor, MD
Po Box 37086,
Baltimore, MD 21297-3086

Ph: (240) 439-8733
Dr Brian O'connor, MD
1562 Opossumtown Pike,
Frederick, MD 21702-4337

Ph: (301) 662-8477

Reviews and Comments


Internal Medicine Doctors in Frederick, MD

Dr. Patrick Johannes Mansky, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1562 Opossumtown Pike, Frederick, MD 21702
Phone: 301-662-8477    
Gaffar A Syed, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 801 Toll House Ave, H4, Frederick, MD 21701
Phone: 301-698-9444    Fax: 301-695-4444
Dr. Kristin A Conley, DO
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 7211 Bank Ct, Frederick, MD 21703
Phone: 240-566-7830    
Mr. Lloyd E Halvorson, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 7115 Guilford Dr Ste 202, Frederick, MD 21704
Phone: 301-663-5922    
Dr. Jeffrey Nathan Cowen, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 915 Toll House Ave, Suite 308, Frederick, MD 21701
Phone: 301-663-5790    Fax: 301-698-6259
Dr. Michael Terry Sullivan, MD
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 22 S Market Street, Frederick, MD 21701
Phone: 301-682-5683    Fax: 301-682-3499
Kellen Mulhern, D.O.
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 7211 Bank Ct Ste 200, Frederick, MD 21703
Phone: 240-215-6310    

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.