Dr Margaret M O'brien, MD - Medicare Anesthesiology in Bryn Mawr, PA

Dr Margaret M O'brien, MD is a medicare enrolled "Anesthesiology" physician in Bryn Mawr, Pennsylvania. She went to Icahn School Of Medicine At Mount Sinai and graduated in 1990 and has 34 years of diverse experience with area of expertise as Anesthesiology. She is a member of the group practice United Anesthesia Services Pc and her current practice location is 130 S Bryn Mawr Ave, Bryn Mawr, Pennsylvania. You can reach out to her office (for appointments etc.) via phone at (610) 526-3000.

Dr Margaret M O'brien is licensed to practice in Pennsylvania (license number MD051635L) 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 1023048964.

Contact Information

Dr Margaret M O'brien, MD
130 S Bryn Mawr Ave,
Bryn Mawr, PA 19010-3121
(610) 526-3000
Not Available

Map and Direction




Physician's Profile

Full NameDr Margaret M O'brien
GenderFemale
SpecialityAnesthesiology
Experience34 Years
Location130 S Bryn Mawr Ave, Bryn Mawr, Pennsylvania
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:
  • Dr Margaret M O'brien attended and graduated from Icahn School Of Medicine At Mount Sinai in 1990
  NPI Data:
  • NPI Number: 1023048964
  • Provider Enumeration Date: 07/04/2006
  • Last Update Date: 04/22/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 2062691777
  • Enrollment ID: I20110127000395

Medical Identifiers

Medical identifiers for Dr Margaret M O'brien such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023048964NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207L00000XAnesthesiology MD051635L (Pennsylvania)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Bryn Mawr HospitalBryn mawr, PAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
United Anesthesia Services Pc3173437613358

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 Margaret M O'brien allows following entities to bill medicare on her behalf.
Entity NameUnited Anesthesia Services Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1053366062
PECOS PAC ID: 3173437613
Enrollment ID: O20031118000620

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 Margaret M O'brien 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 Margaret M O'brien, MD
744 W Michigan Ave,
Jackson, MI 49201-1909

Ph: (517) 787-6440
Dr Margaret M O'brien, MD
130 S Bryn Mawr Ave,
Bryn Mawr, PA 19010-3121

Ph: (610) 526-3000

Reviews and Comments


Anesthesiology Doctors in Bryn Mawr, PA

Mara Underwood, MD
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 130 S Bryn Mawr Ave, Bryn Mawr, PA 19010
Phone: 610-526-3000    
Dr. Jennifer Ann Smith, M.D.
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 937 E Haverford Rd, Suite 100, Bryn Mawr, PA 19010
Phone: 610-525-4966    
Dr. Rodolfo I Godinez, M.D.
Anesthesiology
Medicare: Not Enrolled in Medicare
Practice Location: 1036 Sproul Rd, Bryn Mawr, PA 19010
Phone: 610-527-2665    Fax: 610-527-2665
Mary Mclaughlin, MD
Anesthesiology
Medicare: Not Enrolled in Medicare
Practice Location: 130 S Bryn Mawr Ave, Bryn Mawr, PA 19010
Phone: 610-526-3000    
Dr. Richard E Denovan, MD
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 130 S Bryn Mawr Ave, Bryn Mawr Hospital Anesthesia Dept., Bryn Mawr, PA 19010
Phone: 610-526-3000    
Dr. Glen Quigley, M.D.
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 937 E Haverford Rd, Suite 100, Bryn Mawr, PA 19010
Phone: 610-525-4966    

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.