Individual provider Active NPI

Katherine Libertini Serio, NP

  • Family Nurse Practitioner
  • Timonium, MD
National Provider Identifier
1427614353
Registry record updated Nov 25, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Nurse PractitionerTaxonomy code 363LF0000X
License
R205386 Issued in MD
Practice address
1734 York Rd
Timonium, MD 21093-5606
Phone
(410) 252-2273
Fax
(443) 275-5941
NPI assigned
May 16, 2019
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Nov 25, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Nurse Practitioner 363LF0000X R205386 MD Primary

Addresses

Primary practice location

1734 York Rd
Timonium, MD 21093-5606

Mailing address

220 Rodgers Forge Rd Apt D
Baltimore, MD 21212-1323
Phone (443) 610-8917

Electronic endpoints 1

TypeEndpointUseAffiliation
SOAP URL https://careepiceast.kp.org:14430/Interconnect-prodmam/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/ceq Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD, DC2 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20190710000551 MD Practitioner - Nurse Practitioner 3072848324 Reassigns benefits to 4 organizations
I20230227000011 DC Practitioner - Nurse Practitioner 3072848324 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Maryland Family Care IncGroup PAC ID 5092629394, 157 clinicians

Practice addresses (Care Compare)

1734 York Rd
Lutherville, MD 21093-5606
Phone (410) 252-2273

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
R205386MDMDFamily Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc Family Medicine CurrentSince Feb 13, 2023 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Feb 13, 2023 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Feb 13, 2023 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Feb 13, 2023 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Feb 13, 2023 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Feb 13, 2023 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Feb 13, 2023 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc Current Accepting new patients
Maryland Family Care, Inc. Family Medicine CurrentSince Jul 3, 2023 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Feb 13, 2023 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Feb 13, 2023 Accepting new patients

Locations

7070 Samuel Morse Dr
Columbia, MD 21046
Phone (410) 309-4600

7190 Crestwood Blvd
Frederick, MD 21703
Phone (240) 529-1700

1701 Twin Springs Rd
Halethorpe, MD 21227
Phone (410) 737-5000

10810 Connecticut Ave
Kensington, MD 20895
Phone (301) 929-7100

1221 Mercantile Ln
Fl 3
Largo, MD 20774
Phone (301) 618-5500

655 Watkins Mill Rd
Montgomery Village, MD 20879
Phone (301) 929-7100

7602 Belair Rd
Nottingham, MD 21236
Phone (410) 332-9654

2101 E Jefferson St
#4E
Rockville, MD 20852

2101 E Jefferson St
Ste 6WPPQA
Rockville, MD 20852
Phone (301) 816-5853

2101 E Jefferson St
Ste 4EPFS
Rockville, MD 20852

1734 York Rd
Timonium, MD 21093
Phone (410) 252-2273

2391 Greenspring Dr
Timonium, MD 21093
Phone (410) 847-3000

6701 N Charles St
Towson, MD 21204
Phone (443) 849-2000

1221 Mercantile Ln
Upper Marlboro, MD 20774
Phone (301) 618-5500

8008 Westpark Dr
Tysons Corner, VA 22102
Phone (703) 287-6400

Interoperability endpoints

  • Direct secure messaging: kserio95405@direct.mdmercy.com

Organizations & group practices 11

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.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1557964800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764028800000",
    "number": "1427614353",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "220 RODGERS FORGE RD APT D",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212121323",
            "telephone_number": "443-610-8917"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1734 YORK RD",
            "city": "TIMONIUM",
            "state": "MD",
            "postal_code": "210935606",
            "telephone_number": "410-252-2273",
            "fax_number": "443-275-5941"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SERIO",
        "first_name": "KATHERINE",
        "middle_name": "LIBERTINI",
        "credential": "NP",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2019-05-16",
        "last_updated": "2025-11-25",
        "certification_date": "2025-11-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "MD",
            "license": "R205386",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepiceast.kp.org:14430/Interconnect-prodmam/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/ceq",
            "affiliation": "N",
            "endpointDescription": "Carequality",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "9 Schilling Rd Ste 102",
            "city": "Hunt Valley",
            "state": "MD",
            "country_code": "US",
            "postal_code": "210318611",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Timonium, MD

Sources for this page

Verify at the official NPI Registry.