Active NPI
Markus Olin-Fahle, LMSW
- Clinical Social Worker
- Annapolis, MD
National Provider Identifier
1740914449
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- 26666
- Practice address
- 2002 Medical Pkwy Ste 460
Annapolis, MD 21401-3263 - Phone
- (443) 590-3224
- NPI assigned
- Jul 11, 2022
- 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 |
|---|---|---|---|---|
| Clinical Social Worker | 1041C0700X | 26666 | MD | Primary |
Addresses
Primary practice location
2002 Medical Pkwy Ste 460
Annapolis, MD 21401-3263
Mailing address
2600 Solomons Island Rd
Edgewater, MD 21037-1102
Phone (443) 590-3224
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 |
|---|---|---|---|
| 26666 | MD | MD | Clinical Social Worker |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1657497600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1765497600000",
"number": "1740914449",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2600 SOLOMONS ISLAND RD",
"city": "EDGEWATER",
"state": "MD",
"postal_code": "210371102",
"telephone_number": "443-590-3224",
"fax_number": "443-594-7818"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2002 MEDICAL PKWY STE 460",
"city": "ANNAPOLIS",
"state": "MD",
"postal_code": "214013263",
"telephone_number": "443-590-3224"
}
],
"practiceLocations": [],
"basic": {
"last_name": "OLIN-FAHLE",
"first_name": "MARKUS",
"name_prefix": "Mr.",
"credential": "LMSW",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2022-07-11",
"last_updated": "2025-12-12",
"certification_date": "2025-12-12",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "MD",
"license": "26666",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Annapolis, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 12, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.