Ms Casey L O'bryan, NP-C - Medicare Nurse Practitioner in Washington, DC

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Ms Casey L O'bryan, NP-C is a medicare enrolled "Nurse Practitioner - Family" in Washington, District Of Columbia. She graduated from nursing school in 2011 and has 13 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice One Medstar Primary Care Llc and her current practice location is 4400 Massachusetts Ave Nw, Student Health Center, Washington, District Of Columbia. You can reach out to her office (for appointments etc.) via phone at (202) 885-3380.

Ms Casey L O'bryan is licensed to practice in District Of Columbia (license number RN1025479) 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 1891066650.

Contact Information

Ms Casey L O'bryan, NP-C
4400 Massachusetts Ave Nw, Student Health Center,
Washington, DC 20016-8001
(202) 885-3380
(202) 885-1222

Map and Direction




Provider's Profile

Full NameMs Casey L O'bryan
GenderFemale
SpecialityNurse Practitioner
Experience13 Years
Location4400 Massachusetts Ave Nw, Washington, District Of Columbia
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:
  • Ms Casey L O'bryan graduated from nursing school in 2011
  NPI Data:
  • NPI Number: 1891066650
  • Provider Enumeration Date: 01/25/2012
  • Last Update Date: 01/25/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 5799914115
  • Enrollment ID: I20160920000466

Medical Identifiers

Medical identifiers for Ms Casey L O'bryan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1891066650NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LF0000XNurse Practitioner - Family RN1025479 (District Of Columbia)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
One Medstar Primary Care Llc0749607307110

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. Ms Casey L O'bryan allows following entities to bill medicare on her behalf.
Entity NameOne Medstar Primary Care Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1417571530
PECOS PAC ID: 0749607307
Enrollment ID: O20200827000644

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. Ms Casey L O'bryan 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
Ms Casey L O'bryan, NP-C
4400 Massachusetts Ave Nw, Student Health Center,
Washington, DC 20016-8001

Ph: (202) 885-3380		Ms Casey L O'bryan, NP-C
4400 Massachusetts Ave Nw, Student Health Center,
Washington, DC 20016-8001

Ph: (202) 885-3380

Reviews and Comments


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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).

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