Dr Douglas Rennert, MD - Medicare Pulmonary Disease in Leesburg, VA

Dr Douglas Rennert, MD is a medicare enrolled "Internal Medicine - Pulmonary Disease" physician in Leesburg, Virginia. He went to Columbia University College Of Physicians And Surgeons and graduated in 1984 and has 40 years of diverse experience with area of expertise as Pulmonary Disease. He is a member of the group practice Pulmonary And Critical Care Associates, P.c., Pulmonary And Critical Care Associates, P.c. and his current practice location is 19455 Deerfield Ave, Suite 206, Leesburg, Virginia. You can reach out to his office (for appointments etc.) via phone at (703) 858-9608.

Dr Douglas Rennert is licensed to practice in Virginia (license number 0101043761) 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 1992796502.

Contact Information

Dr Douglas Rennert, MD
19455 Deerfield Ave, Suite 206,
Leesburg, VA 20176-8100
(703) 858-9608
(702) 858-9618

Map and Direction




Physician's Profile

Full NameDr Douglas Rennert
GenderMale
SpecialityPulmonary Disease
Experience40 Years
Location19455 Deerfield Ave, 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:
  • Dr Douglas Rennert attended and graduated from Columbia University College Of Physicians And Surgeons in 1984
  NPI Data:
  • NPI Number: 1992796502
  • Provider Enumeration Date: 11/02/2005
  • Last Update Date: 07/10/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 6800868787
  • Enrollment ID: I20110111000599

Medical Identifiers

Medical identifiers for Dr Douglas Rennert such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1992796502NPI-NPPES
5854466MedicaidVA
A6950002OtherDCDC BS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0200XInternal Medicine - Critical Care Medicine 0101043761 (Virginia)Secondary
207RS0012XInternal Medicine - Sleep Medicine 0101043761 (Virginia)Secondary
207RP1001XInternal Medicine - Pulmonary Disease 0101043761 (Virginia)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Inova Loudoun HospitalLeesburg, VAHospital
Reston Hospital CenterReston, VAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Pulmonary And Critical Care Associates, P.c.31735184385
Pulmonary And Critical Care Associates, P.c.31735184385

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 Douglas Rennert allows following entities to bill medicare on his behalf.
Entity NamePulmonary And Critical Care Associates, P.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023008182
PECOS PAC ID: 3173518438
Enrollment ID: O20050415000639
Entity NameInova Health Care Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952320061
PECOS PAC ID: 2466351093
Enrollment ID: O20080806000696
Entity NameCommonwealth Critical Care Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1891210035
PECOS PAC ID: 4284909029
Enrollment ID: O20210730001198

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 Douglas Rennert 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 Douglas Rennert, MD
19455 Deerfield Ave, Ste 206,
Leesburg, VA 20176-8100

Ph: (703) 858-9608
Dr Douglas Rennert, MD
19455 Deerfield Ave, Suite 206,
Leesburg, VA 20176-8100

Ph: (703) 858-9608

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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