Dr Frederick Greiner Barr, MD - Medicare Medical Oncology in Chevy Chase, MD

Dr Frederick Greiner Barr, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Chevy Chase, Maryland. He went to Northwestern University Feinberg Medical School and graduated in 1975 and has 49 years of diverse experience with area of expertise as Medical Oncology. He is a member of the group practice Rcca Md Llc and his current practice location is 5454 Wisconsin Ave, Ste 1300, Chevy Chase, Maryland. You can reach out to his office (for appointments etc.) via phone at (301) 657-8587.

Dr Frederick Greiner Barr is licensed to practice in Maryland (license number D22775) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1184620122.

Contact Information

Dr Frederick Greiner Barr, MD
5454 Wisconsin Ave, Ste 1300,
Chevy Chase, MD 20815-6908
(301) 657-8587
(301) 654-3958



Physician's Profile

Full NameDr Frederick Greiner Barr
GenderMale
SpecialityMedical Oncology
Experience49 Years
Location5454 Wisconsin Ave, Chevy Chase, Maryland
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Frederick Greiner Barr attended and graduated from Northwestern University Feinberg Medical School in 1975
  NPI Data:
  • NPI Number: 1184620122
  • Provider Enumeration Date: 06/23/2005
  • Last Update Date: 11/23/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 8527054105
  • Enrollment ID: I20040421000068

Medical Identifiers

Medical identifiers for Dr Frederick Greiner Barr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184620122NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology D22775 (Maryland)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Sibley Memorial HospitalWashington, DCHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Rcca Md Llc81233102086

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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 Frederick Greiner Barr allows following entities to bill medicare on his behalf.
Entity NameRcca Md Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1467800367
PECOS PAC ID: 8123310208
Enrollment ID: O20160711001213

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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 Frederick Greiner Barr 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 Frederick Greiner Barr, MD
5454 Wisconsin Ave, Ste 1300,
Chevy Chase, MD 20815-6908

Ph: (301) 657-8587
Dr Frederick Greiner Barr, MD
5454 Wisconsin Ave, Ste 1300,
Chevy Chase, MD 20815-6908

Ph: (301) 657-8587

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Internal Medicine Doctors in Chevy Chase, MD

Dr. Rachel Kaiser, MD, MPH
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 5454 Wisconsin Ave, Suite 600, Chevy Chase, MD 20815
Phone: 301-942-7600    
Dr. Allen A. Nimetz, M.D.
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 5530 Wisconsin Ave, Suite 700, Chevy Chase, MD 20815
Phone: 301-656-5050    Fax: 301-654-4237
Dr. Ankit B Shah, M.D., M.P.H.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 8401 Connecticut Ave Ste 104, Chevy Chase, MD 20815
Phone: 240-892-7070    Fax: 240-248-0606
Dr. Steve A Burka, MD
Hematology & Oncology
Medicare: May Accept Medicare Assignments
Practice Location: 5530 Wisconsin Ave, #914, Chevy Chase, MD 20815
Phone: 301-654-3803    Fax: 301-654-3808
Dr. Mark A Miller,
Hematology & Oncology
Medicare: Medicare Enrolled
Practice Location: 4411 Leland St, Chevy Chase, MD 20815
Phone: 301-496-0815    
Dr. Sara Goldkind, MD
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 5630 Wisconsin Ave Apt 807, Chevy Chase, MD 20815
Phone: 240-353-0866    
Dr. Robert J Marshall, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 5530 Wisconsin Ave Ste 700, Chevy Chase, MD 20815
Phone: 301-656-5050    Fax: 301-654-4237

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