Oscar Adler, MD, PHD - Medicare Internal Medicine in Leesburg, VA

Oscar Adler, MD, PHD is a medicare enrolled "Internal Medicine - Nephrology" physician in Leesburg, Virginia. He graduated from medical school in 1983 and has 41 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Loudoun Medical Group, Pc, Loudoun Medical Group, Pc and his current practice location is 19490 Sandridge Way, Suite 120, Leesburg, Virginia. You can reach out to his office (for appointments etc.) via phone at (703) 723-5555.

Oscar Adler is licensed to practice in Virginia (license number 0101234619) 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 1700874138.

Contact Information

Oscar Adler, MD, PHD
19490 Sandridge Way, Suite 120,
Leesburg, VA 20176-3469
(703) 723-5555
(703) 562-6996

Map and Direction




Physician's Profile

Full NameOscar Adler
GenderMale
SpecialityInternal Medicine
Experience41 Years
Location19490 Sandridge Way, Suite 120, Leesburg, Virginia
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:
  • Oscar Adler graduated from medical school in 1983
  NPI Data:
  • NPI Number: 1700874138
  • Provider Enumeration Date: 10/10/2005
  • Last Update Date: 10/06/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 8729029640
  • Enrollment ID: I20080520000851

Medical Identifiers

Medical identifiers for Oscar Adler such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1700874138NPI-NPPES
1700874138MedicaidVA
30015815110001MedicaidVA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RN0300XInternal Medicine - Nephrology 0101234619 (Virginia)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Pure Life Renal Of Lansdowne Inc.Leesburg, VADialysis facility
Inova Loudoun HospitalLeesburg, VAHospital
Reston Hospital CenterReston, VAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Loudoun Medical Group, Pc0042119661288
Loudoun Medical Group, Pc0042119661288

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. Oscar Adler allows following entities to bill medicare on his behalf.
Entity NameLoudoun Medical Group, Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1407908817
PECOS PAC ID: 0042119661
Enrollment ID: O20040102000616

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. Oscar Adler 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
Oscar Adler, MD, PHD
224d Cornwall St Nw Ste 403,
Leesburg, VA 20176-2704

Ph: (703) 737-6001
Oscar Adler, MD, PHD
19490 Sandridge Way, Suite 120,
Leesburg, VA 20176-3469

Ph: (703) 723-5555

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).

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.