Joan Threlfall, - Medicare Certified Registered Nurse Anesthetist (crna) in Washington, DC

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Joan Threlfall, is a medicare enrolled "Nurse Anesthetist, Certified Registered" physician in Washington, District Of Columbia. She graduated from medical school in 1984 and has 40 years of diverse experience with area of expertise as Certified Registered Nurse Anesthetist (crna). She is a member of the group practice Medstar Medical Group Anesthesiology Llc and her current practice location is 3800 Reservoir Rd Nw, Washington, District Of Columbia. You can reach out to her office (for appointments etc.) via phone at (202) 444-8640.

Joan Threlfall is licensed to practice in District Of Columbia (license number RN61761) 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 1043210966.

Contact Information

Joan Threlfall,
3800 Reservoir Rd Nw,
Washington, DC 20007-2113
(202) 444-8640
Not Available

Map and Direction




Physician's Profile

Full NameJoan Threlfall
GenderFemale
SpecialityCertified Registered Nurse Anesthetist (crna)
Experience40 Years
Location3800 Reservoir Rd 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:
  • Joan Threlfall graduated from medical school in 1984
  NPI Data:
  • NPI Number: 1043210966
  • Provider Enumeration Date: 07/22/2005
  • Last Update Date: 04/11/2013
  Medicare PECOS Information:
  • PECOS PAC ID: 7416114244
  • Enrollment ID: I20120207000465

Medical Identifiers

Medical identifiers for Joan Threlfall such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1043210966NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207L00000XAnesthesiology 7601061761 (District Of Columbia)Secondary
367500000XNurse Anesthetist, Certified Registered RN61761 (District Of Columbia)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Medstar Georgetown University HospitalWashington, DCHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Medstar Medical Group Anesthesiology Llc1052678034438

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. Joan Threlfall allows following entities to bill medicare on her behalf.
Entity NameMedstar Medical Group Anesthesiology Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1528578333
PECOS PAC ID: 1052678034
Enrollment ID: O20171129001837

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. Joan Threlfall 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
Joan Threlfall,
Po Box 418283,
Boston, MA 02241-8283

Ph: (703) 558-1544		Joan Threlfall,
3800 Reservoir Rd Nw,
Washington, DC 20007-2113

Ph: (202) 444-8640

Reviews and Comments



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.