Active NPI
Karen Sylvester, PA-C
- Physician Assistant
- Bethesda, MD
National Provider Identifier
1518899962
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Physician Assistant
- License
- C0010528
- Practice address
- 10401 Old Georgetown Rd Ste 400
Bethesda, MD 20814-1911 - Phone
- (240) 223-2639
- NPI assigned
- Jun 1, 2026
- Sex
- Female
- 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 |
|---|---|---|---|---|
| Physician Assistant | 363A00000X | C0010528 | MD | Primary |
Addresses
Primary practice location
10401 Old Georgetown Rd Ste 400
Bethesda, MD 20814-1911
Mailing address
10401 Old Georgetown Rd Ste 400
Bethesda, MD 20814-1911
Phone (240) 223-2639
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Care Compare profile
Medicare Care Compare- Specialty
- Physician Assistant
- Education
- Other, 2025
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
Practice addresses (Care Compare)
950 N Glebe Rd
Suite 700
Arlington, VA 22203-4173
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| C0010528 | MD | MD | Physician Assistant |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1780272000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1782172800000",
"number": "1518899962",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "10401 OLD GEORGETOWN RD STE 400",
"city": "BETHESDA",
"state": "MD",
"postal_code": "208141911",
"telephone_number": "240-223-2639"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "10401 OLD GEORGETOWN RD STE 400",
"city": "BETHESDA",
"state": "MD",
"postal_code": "208141911",
"telephone_number": "240-223-2639"
}
],
"practiceLocations": [],
"basic": {
"last_name": "SYLVESTER",
"first_name": "KAREN",
"credential": "PA-C",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2026-06-01",
"last_updated": "2026-06-23",
"certification_date": "2026-06-23",
"status": "A"
},
"taxonomies": [
{
"code": "363A00000X",
"taxonomy_group": "193400000X SINGLE SPECIALTY GROUP",
"desc": "Physician Assistant",
"state": "MD",
"license": "C0010528",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Bethesda, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 23, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.