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KATHERINE LIBERTINI SERIO NP
NPI 1427614353
Nurse Practitioner - Family in Timonium, MD

Active since May 16, 2019PECOS EnrolledAccepts Medicare Assignment
1734 YORK RD, TIMONIUM, MD 21093(410) 252-2273(443) 275-5941 Get Directions Write a Review

NPPES record last updated: November 25, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 25, 2025, Aug 7, 2025, Feb 13, 2023 and 1 more (4 updates tracked since 2019).

About Katherine Libertini Serio Np NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KATHERINE LIBERTINI SERIO NP (NPI 1427614353) is an individual family provider in Timonium, Maryland, licensed in Maryland (R205386) and active in the NPI registry since May 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2018).

NPPES Registry Identity

NPI1427614353
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameKATHERINE LIBERTINI SERIOCredential: NP
Location Address1734 YORK RDTimonium, MD 21093-5606
Mailing Address220 Rodgers Forge Rd Apt DBaltimore, MD 21212-1323 · (443) 610-8917
Phone(410) 252-2273
Fax(443) 275-5941
Sole ProprietorYes
Medical School CMSOtherGraduated 2018
Enumeration DateMay 16, 2019
Last NPPES UpdateNovember 25, 20254 updates tracked since enumeration
NPPES CertifiedNovember 25, 2025
✔ NPI 1427614353 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in MD · R205386
1734 YORK RD, Timonium, MD 21093
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Katherine Libertini Serio Np is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3072848324
PECOS Enrollment IDI20190710000551
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Katherine Serio reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc
1.7 mi
Ambulatory Surgical
2391 GREENSPRING DRIVE
Timonium, MD 21093
NPI 1457023616 (301) 816-2424
Maryland Family Care, Inc.
9.4 mi
Family Medicine
301 SAINT PAUL PL, 12TH FLOOR MCAULEY TOWER
Baltimore, MD 21202
  • Reassigned Medicare billing, Maryland enrollment
  • 257 clinicians in this Medicare group
NPI 1598718256 (410) 500-5500

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
122 services81 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
74 services60 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
43 services42 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
18 services18 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
16 services16 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21093 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.08 typical visit price
range $60.73 – $183.44
Typical copayment $23.52 (range $15.18 – $45.86)
Most-billed visit code 99203
Established Patient
$106.59 typical visit price
range $19.60 – $149.17
Typical copayment $26.64 (range $4.90 – $37.29)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ROWEN OPHTHLMOLOGY PC
Ophthalmology
1734 YORK RD
LUTHERVILLE, MD 21093
Baltimore County (410) 332-9500
NUTRITION CONNECTION, LLC
Dietitian, Registered
1734 YORK RD
TIMONIUM, MD 21093
Baltimore County (410) 252-2273
ST PAUL PLACE SPECIALISTS, INC.
Surgery
1734 YORK RD
LUTHERVILLE, MD 21093
Baltimore County (410) 332-9000
FOOT CENTERS OF MARYLAND, LLC
Podiatrist (Foot & Ankle Surgery)
1734 YORK RD
LUTHERVILLE, MD 21093
Baltimore County (410) 661-3338
LUTHERVILLE HEMATOLOGY AND ONCOLOGY SERVICES
Internal Medicine (Hematology & Oncology)
1734 YORK RD
LUTHERVILLE, MD 21093
Baltimore County (410) 494-9099
MARYLAND FAMILY CARE, INC.
Internal Medicine
1734 YORK RD
LUTHERVILLE, MD 21093
Baltimore County (410) 252-2273
MARYLAND SPINE CENTER CHARTERED
Orthopaedic Surgery (Orthopaedic Surgery of the Spine)
1734 YORK RD
LUTHERVILLE, MD 21093
Baltimore County (410) 539-3434
VASCULAR SPECIALTY SERVICES, LLC
Surgery (Vascular Surgery)
1734 YORK RD
LUTHERVILLE, MD 21093
Baltimore County (410) 332-9404

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Katherine Serio's NPI number?

The NPI number for Katherine Serio is 1427614353. It was assigned to this individual provider in the NPPES registry on May 16, 2019.

Where is Katherine Serio located?

Katherine Serio practices at 1734 York Rd, Timonium, MD 21093. The listed phone number is (410) 252-2273.

What is Katherine Serio's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Katherine Serio enrolled in Medicare?

Yes. Katherine Serio is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Katherine Serio's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Serio reassigns Medicare benefits to 2 organizations: Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Timonium, MD) and Maryland Family Care, Inc. (Baltimore, MD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Katherine Serio's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Katherine Serio was last updated on November 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.