Mary Barker Barton is a Internal Medicine Physician practicing in Washington, District Of Columbia. The National Provider Identifier (NPI) is #1225971526, which was assigned on April 11, 2026, and the registration record was last updated on April 11, 2026. The practitioner's main practice location is at 2333 Ontario Rd Nw, Washington, DC 20009-2627; the contact telephone number is 8447962797. The primary taxonomy of Mary Barker Barton is Internal Medicine Physician (207R00000X). Mary Barker Barton is licensed to practice in the state of District Of Columbia (#MD500003440).
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
| NPI | 1225971526 |
| Entity Type | Individual |
| Provider Name | DR. MARY BARKER BARTON |
| Gender | Female |
| Credential | MD, MPP |
| Practice Address |
2333 Ontario Rd Nw Washington DC 20009-2627 |
| Practice Telephone | 8447962797 |
| Mailing Address |
6306 Broad Branch Rd Chevy Chase MD 20815-3342 |
| Certification Date | 2026-04-11 |
| Enumeration Date | 2026-04-11 |
| Last Update Date | 2026-04-11 |
| Is Sole Proprietor | N |
| Primary | Code | Classification | Specialization | Taxonomy Group | License Number | License State |
|---|---|---|---|---|---|---|
| Y | 207R00000X | Internal Medicine | MD500003440 | DC |
| Code | 207R00000X |
| Taxonomy | Internal Medicine Physician |
| Classification | Internal Medicine |
| Grouping | Allopathic & Osteopathic Physicians |
| Definition: A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. |
| Notes: Source: American Board of Medical Specialties, 2007. www.abms.org [7/1/2007: added definition, added source; 7/1/2011: modified source] Additional Resources: American Board of Internal Medicine, 2007. http://www.abim.org/. American Osteopathic Board of Internal Medicine, 2007. http://www.osteopathic.org/certification Board certification for Medical Doctors (MDs) is provided by the American Board of Internal Medicine. Board certification for Doctors of Osteopathy (DOs) is provided by the American Osteopathic Board of Internal Medicine. |
| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Iman Muhammad Tahir · Iman Tahir | 4439 State Route 159 Ste 150, Chillicothe, OH 45601-7833 | Internal Medicine Physician | 2026-04-09 |
| Chahil Medical Associates | 3632 W Packwood Ave, Visalia, CA 93277-5033 | Internal Medicine Physician | 2026-04-08 |
| Ochsner Clinic LLC | 150 Hall St, Luling, LA 70070-4418 | Internal Medicine Physician | 2026-04-08 |
| Suzete Nascimento Farias Da Guarda | 653 W 8th St # L18, Jacksonville, FL 32209-6511 | Internal Medicine Physician | 2026-04-09 |
| Lamya Alzabidi | 100 Baldwin Rd, Hempstead, NY 11550-6844 | Internal Medicine Physician | 2026-04-09 |
| Sk Medical Services P.A. | 5187 Delphi Woods Ct, Lakeland, FL 33812-5256 | Internal Medicine Physician | 2026-04-09 |
| Crs Wellness LLC | 3865 Red Maple Dr, Conway, AR 72034-3549 | Internal Medicine Physician | 2026-04-08 |
| Southern Puji Medical Center PC | 13847 E 14th St Ste 113, San Leandro, CA 94578-2625 | Internal Medicine Physician | 2026-04-08 |
| Umme Kulsum | 1500 S Fairfield Ave, Chicago, IL 60608-1782 | Internal Medicine Physician | 2026-04-11 |
| June Medical Group Inc. | 1580 W El Camino Real Ste 7, Mountain View, CA 94040-2462 | Internal Medicine Physician | 2026-04-08 |
| Find all providers with the same taxonomy | |||
| Street Address |
2333 ONTARIO RD NW |
| City | WASHINGTON |
| State | DC |
| Zip Code | 20009-2627 |
| Country | US |
| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Mylz Taylor | 2333 Ontario Rd Nw, Washington, DC 20009-2627 | Mental Health Counselor | 2022-10-24 |
| Andreas Thomas Gambardello | 2333 Ontario Rd Nw, Washington, DC 20009-2627 | Family Nurse Practitioner | 2025-12-02 |
| Sandra Milena Alsakir | 2333 Ontario Rd Nw, Washington, DC 20009-2627 | Clinical Social Worker | 2022-10-21 |
| Bianca Jerlisa Collins | 2333 Ontario Rd Nw, Washington, DC 20009-2627 | Social Worker | 2025-07-30 |
| Elizabeth Bumpas | 2333 Ontario Rd Nw, Washington, DC 20009-2627 | Advanced Practice Midwife | 2026-01-02 |
| Alexandra Patricia Fuentes | 2333 Ontario Rd Nw, Washington, DC 20009-2627 | Mental Health Counselor | 2025-12-23 |
| Meaghon Omobude | 2333 Ontario Rd Nw, Washington, DC 20009-2627 | Mental Health Counselor | 2023-01-04 |
| Shelby Hettenbach | 2333 Ontario Rd Nw, Washington, DC 20009-2627 | Social Worker | 2020-09-02 |
| Mary's Center for Maternal & Child Care, Inc - Ob/Gyn Services | 2333 Ontario Rd Nw, Washington, DC 20009-2627 | Obstetrics & Gynecology Physician | 2020-05-06 |
| Hebron Habtamu Kelecha | 2333 Ontario Rd Nw, Washington, DC 20009-2627 | Obstetrics & Gynecology Physician | 2021-03-25 |
| Find all providers in the same location | |||
| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Mary's Center for Maternal and Child Care, Inc | 2333 Ontario Rd. Nw, Washington, DC 20009-2627 | Case Management Agency | 2007-03-26 |
| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Adriana Rossel | 2020 19th St Nw, Washington, DC 20009-1308 | Clinical Social Worker | 2018-09-27 |
| Kyle Costenbader | 1731 Willard St Nw Apt 201, Washington, DC 20009-1704 | Student in an Organized Health Care Education/Training Program | 2020-03-26 |
| On The Move Pt PLLC | 1755 Willard St Nw Apt 3, Washington, DC 20009-1722 | Physical Therapy Clinic/Center | 2026-01-14 |
| The Board of Directors and Managers of The Momentum Health Development Corporation | 1309 5th Street, Washington, DC 20009 | Community/Behavioral Health Agency | 2025-08-05 |
| Velora Care Inc | 1930 18th St Nw, Washington, DC 20009-1796 | Pediatric Skilled Nursing Facility | 2025-12-04 |
| Helen West | 1912 Biltmore Street Nw, Washington, DC 20009 | Psychologist | 2025-08-08 |
| Damazhae William Neal | 1106 Columbia Rd Nw, Washington, DC 20009 | Personal Care Attendant | 2025-08-06 |
| Medstar Urgent Care LLC | 1805 Columbia Rd Nw, Washington, DC 20009-2001 | General Practice Physician | 2024-01-08 |
| Stephanie Fleur-Aime | 1930 18th St Nw, Suite B2 Pmb2376, Washington, DC 20009 | Doula | 2025-04-28 |
| Miraf Mesaye | 2001 15th St Nw, Apt 803, Washington, DC 20009 | Personal Care Attendant | 2026-04-03 |
| Find all providers in the same zip code | |||
| Provider Name | Address | Taxonomy | Enumeration Date |
|---|---|---|---|
| Mary Helen Barker | 710 S Holly St Ste 10, Siloam Springs, AR 72761-3304 | Social Worker | 2025-09-15 |
| Laura Barton · Lori Barton | 170 Twinbrook Ln Unit 2, Corbin, KY 40701-2802 | Case Manager/Care Coordinator | 2026-01-10 |
| Ian Barton May | 624 E Front Ave, Spokane, WA 99202-2139 | Internal Medicine Physician | 2013-04-18 |
| Nathalia Barker Barker | 2390 Wedgewood Dr # 650, Akron, OH 44312-2499 | Behavior Technician | 2025-09-25 |
| Cameron James Koenig-Barker · Laura Jane Koenig, Koenig-Barker | 4545 Dodge St, Omaha, NE 68132-3232 | Mental Health Counselor | 2021-06-09 |
| Mary Barker | 104 S Front Ave, Prestonsburg, KY 41653-1614 | Mental Health Counselor | 2025-10-01 |
| Sarah Barker | 1301 E Arlington Blvd, Greenville, NC 27858-5868 | Physical Therapist | 2025-11-14 |
| Ashley Barker Sugg | 8000 Wolf River Blvd Ste 200, Germantown, TN 38138-1755 | Certified Registered Nurse Anesthetist | 2014-06-04 |
| Angela R Barton-Scherder · Angela Barton | 818 W Champ Clark Dr, Bowling Green, MO 63334-2034 | Professional Counselor | 2006-07-25 |
| Ellen Barton Blackmon · Ellen Huston Barton | 810 St Vincents Drive, Birmingham, AL 35205-1601 | Diagnostic Radiology Physician | 2007-04-27 |
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This dataset includes over five million health care providers who are assigned National Provider Identifier (NPI) in the National Plan and Provider Enumeration System (NPPES), developed by the Centers for Medicare & Medicaid Services (CMS). Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under Health Insurance Portability and Accountability Act (HIPAA). Each provider is registered with the NPI, full name, status, address, taxonomy, other identifiers, etc.
| Subject | Transparency and Disclosure |
| Jurisdiction | Federal |
| Data Provider | National Plan and Provider Enumeration System (NPPES), by the Centers for Medicare & Medicaid Services (CMS) |
| Source | download.cms.gov |
The National Provider Identifier (NPI) is a Health Insurance Portability and Accountability Act (HIPAA) Administrative Simplification Standard. The NPI is a unique identification number for covered health care providers and all health plans and health care clearinghouses, who must use the NPIs in the administrative and financial transactions adopted under HIPAA. The NPI is a 10-position, intelligence-free numeric identifier (10-digit number). All health care providers who are HIPAA-covered entities, whether individuals or organizations, must get an NPI. A HIPAA-covered entity is a health care provider that conducts certain transactions in electronic form, or a health care clearinghouse, or a health plan (including commercial plans, Medicare, and Medicaid). Centers for Medicare & Medicaid Services (CMS) has developed the National Plan and Provider Enumeration System (NPPES) to assign unique identifiers to health care providers. The National Provider Indentifier (NPI) has been the standard identifier for all HIPAA-covered entities (health care providers) since May 23, 2007. Small health plans were required to obtain and use an NPI by May 23, 2008. This dataset includes over five million health care providers (individuals and organizations) who are assigned NPI. The provider data elements are disclosed to the public by the Centers for Medicare & Medicaid Services (CMS) under the Freedom of Information Act (FOIA), as listed in the NPPES Data Dissemination Notice (CMS-6060-N). The NPI final rules define the following elements which required to be disclosed as determined by Department of Health & Human Services (HHS): NPI, Entity Type, Provider Name, Credential, Business Mailing Address, Business Location Address, Healthcare Provider Taxonomy Code, Other Provider Identifier, Provider Enumeration Date, NPI Deactivation Date, Provider License Number, Authorized Official Name and Contact Information. |