Active NPI
Eric S Markowitz, DDS
- Dentist
- Washington, DC
National Provider Identifier
1699736306
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Dentist
- License
- 5563
- Practice address
- 1145 19TH Street NW
Suite 316
Washington, DC 20036 - Phone
- (202) 833-8240
- Fax
- (202) 331-7803
- NPI assigned
- Mar 31, 2006
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Dentist | 122300000X | 5563 | DC | Primary |
Addresses
Primary practice location
1145 19TH Street NW
Suite 316
Washington, DC 20036
Mailing address
1145 19TH Street NW
Suite 316
Washington, DC 20036
Phone (202) 833-8240
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 5563 | DC | MD | Dentist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Sidney S Markowitz DDS PC | Dentist | Past | Accepting new patients |
Organizations & group practices 1
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Dentist
- Washington, DC
- NPI 1487615159
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1143763200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1699736306",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1145 19TH STREET NW",
"address_2": "SUITE 316",
"city": "WASHINGTON",
"state": "DC",
"postal_code": "20036",
"telephone_number": "202-833-8240",
"fax_number": "202-331-7803"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1145 19TH STREET NW",
"address_2": "SUITE 316",
"city": "WASHINGTON",
"state": "DC",
"postal_code": "20036",
"telephone_number": "202-833-8240",
"fax_number": "202-331-7803"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MARKOWITZ",
"first_name": "ERIC",
"middle_name": "S",
"name_prefix": "Dr.",
"credential": "DDS",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-03-31",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "122300000X",
"taxonomy_group": "",
"desc": "Dentist",
"state": "DC",
"license": "5563",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Washington, DC
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.