Dr Ian Thomas Greenwalt, MD - Medicare Surgical Oncology in Washington, DC

Dr Ian Thomas Greenwalt, MD is a medicare enrolled "Surgery - Surgical Oncology" physician in Washington, District Of Columbia. He went to Drexel University College Of Medicine and graduated in 2014 and has 10 years of diverse experience with area of expertise as Surgical Oncology. He is a member of the group practice Medstar Medical Group Ii Llc and his current practice location is 3800 Reservoir Rd Nw, Washington, District Of Columbia. You can reach out to his office (for appointments etc.) via phone at (202) 295-0560.

Dr Ian Thomas Greenwalt is licensed to practice in District Of Columbia (license number MD047318) 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 1720405665.

Contact Information

Dr Ian Thomas Greenwalt, MD
3800 Reservoir Rd Nw,
Washington, DC 20007-2113
(202) 295-0560
Not Available

Map and Direction




Physician's Profile

Full NameDr Ian Thomas Greenwalt
GenderMale
SpecialitySurgical Oncology
Experience10 Years
Location3800 Reservoir Rd Nw, Washington, District Of Columbia
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 Ian Thomas Greenwalt attended and graduated from Drexel University College Of Medicine in 2014
  NPI Data:
  • NPI Number: 1720405665
  • Provider Enumeration Date: 03/27/2014
  • Last Update Date: 08/07/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 5193141810
  • Enrollment ID: I20200812001674

Medical Identifiers

Medical identifiers for Dr Ian Thomas Greenwalt such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1720405665NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2086X0206XSurgery - Surgical Oncology MD047318 (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 Ii Llc05474138251790

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 Ian Thomas Greenwalt allows following entities to bill medicare on his behalf.
Entity NameMedstar Medical Group Ii Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184046187
PECOS PAC ID: 0547413825
Enrollment ID: O20130117000415

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 Ian Thomas Greenwalt 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 Ian Thomas Greenwalt, MD
3800 Reservoir Rd Nw,
Washington, DC 20007-2113

Ph: (202) 295-0560
Dr Ian Thomas Greenwalt, MD
3800 Reservoir Rd Nw,
Washington, DC 20007-2113

Ph: (202) 295-0560

Reviews and Comments


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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.

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