Warren Leonard, MD - Internal Medicine in Bethesda, MD

Warren Leonard, MD is a Internal Medicine - Allergy & Immunology physician based in Bethesda, Maryland. Warren Leonard is licensed to practice in Maryland (license number D0027344) and his current practice location is 9000 Rockville Pike Rm 7b05, Bethesda, Maryland. He can be reached at his office (for appointments etc.) via phone at (301) 496-0098.

NPI number for Warren Leonard is 1952213498 and his current mailing address is 9020 Burdette Rd, Bethesda, Maryland. He does not participate in medicare program and thus does not accept medicare assignments. His NPI Number is 1952213498.

Contact Information

Warren Leonard, MD
9000 Rockville Pike Rm 7b05,
Bethesda, MD 20892-1674
(301) 496-0098
Not Available

Map and Direction




Physician's Profile

Full NameWarren Leonard
GenderMale
SpecialityInternal Medicine - Allergy & Immunology
Location9000 Rockville Pike Rm 7b05, Bethesda, Maryland
Accepts Medicare AssignmentsDoes not participate in Medicare Program. He may not accept medicare assignment.
  NPI Data:
  • NPI Number: 1952213498
  • Provider Enumeration Date: 09/21/2026
  • Last Update Date: 09/21/2026

Medical Identifiers

Medical identifiers for Warren Leonard such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1952213498NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RA0201XInternal Medicine - Allergy & Immunology D0027344 (Maryland)Primary

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. Warren Leonard is NOT enrolled with medicare and thus cannot prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Warren Leonard, MD
9020 Burdette Rd,
Bethesda, MD 20817-2114

Ph: (202) 897-8962
Warren Leonard, MD
9000 Rockville Pike Rm 7b05,
Bethesda, MD 20892-1674

Ph: (301) 496-0098

Reviews and Comments


Internal Medicine Doctors in Bethesda, MD

Ardalan Enkeshafi, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 6410 Rockledge Dr Ste 304, Bethesda, MD 20817
Phone: 443-602-6207    
Dr. Tara Palmore, M.D.
Internal Medicine
Medicare: May Accept Medicare Assignments
Practice Location: 10 Center Dr, Msc 1888, Bethesda, MD 20892
Phone: 301-496-4000    
Dr. Cornelia Diana Cudrici, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 10 Center Drive Bld 10 Rm 6n216a, Bethesda, MD 20892
Phone: 301-443-5519    
Shanthi Murgesh Nadar,
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 8600 Old Georgetown Road, Bethesda, MD 20814
Phone: 301-896-3100    
Dr. Nicole Jeanine Gormley, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 10 Center Dr, Bldg 10, Rm 2c145, Bethesda, MD 20892
Phone: 301-496-9320    
Mr. Andrew Joseph Ullmann Jr., DO
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 8901 Rockville Pike, Bethesda, MD 20889
Phone: 908-635-6978    
Joann Marie Mican,
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 9000 Rockville Pike, Bethesda, MD 20892
Phone: 240-565-4969    

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.