Active NPI
Alexander Aaron Bleiweis, LMSW
- Clinical Social Worker
- Olney, MD
National Provider Identifier
1205421682
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- 0904017002
- Practice address
- 4241 Bar Harbor PL
Olney, MD 20832-2964 - Phone
- (914) 261-9337
- NPI assigned
- Mar 7, 2021
- Last updated
- Mar 19, 2026
- Sex
- Male
- Sole proprietor
- Yes
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 |
|---|---|---|---|---|
| Clinical Social Worker | 1041C0700X | 0904017002 | VA | Primary |
Addresses
Primary practice location
4241 Bar Harbor PL
Olney, MD 20832-2964
Mailing address
4241 Bar Harbor PL
Olney, MD 20832-2964
Phone (914) 261-9337
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Opted out of Medicare
- Yes, effective Feb 7, 2024 through Feb 7, 2028
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 0904017002 | VA | MD | Clinical Social Worker |
| 27217 | MD | MD | Physical Therapist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1615075200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1773878400000",
"number": "1205421682",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "4241 BAR HARBOR PL",
"city": "OLNEY",
"state": "MD",
"postal_code": "208322964",
"telephone_number": "914-261-9337"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "4241 BAR HARBOR PL",
"city": "OLNEY",
"state": "MD",
"postal_code": "208322964",
"telephone_number": "914-261-9337"
}
],
"practiceLocations": [],
"basic": {
"last_name": "BLEIWEIS",
"first_name": "ALEXANDER",
"middle_name": "AARON",
"name_prefix": "Mr.",
"credential": "LMSW",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2021-03-07",
"last_updated": "2026-03-19",
"certification_date": "2026-03-19",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "VA",
"license": "0904017002",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Olney, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 19, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Opt Out Affidavits.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.