Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

KATHLEEN SERAFICA CASTILLO MD
NPI 1891374617
Internal Medicine - Nephrology in Bowling Green, KY

Q: What is Kathleen Castillo's NPI number?

The NPI number for Kathleen Castillo is 1891374617. It was assigned to this individual provider in the NPPES registry on April 7, 2021.

Q: What is Kathleen Castillo's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for Kathleen Castillo was last updated on August 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 days 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.

Active since April 07, 2021PECOS Enrolled

720 E 2ND AVE STE 203, BOWLING GREEN, KY 42101(270) 843-5114(270) 745-1230 Get Directions Write a Review

NPPES record last updated: August 3, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 3, 2026, Mar 9, 2026, Apr 9, 2021 (3 updates tracked since 2021).

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About Kathleen Serafica Castillo Md NPPES

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

KATHLEEN SERAFICA CASTILLO MD (NPI 1891374617) is an individual nephrology provider in Bowling Green, Kentucky, licensed in Kentucky (61484) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2004).

NPPES Registry Identity

NPI1891374617

Entity TypeIndividualFemale

Primary Taxonomy207RN0300X

Provider Legal NameKATHLEEN SERAFICA CASTILLOCredential: MD

Location Address720 E 2ND AVE STE 203Bowling Green, KY 42101-1778

Mailing Address720 E 2nd Ave Ste 203Bowling Green, KY 42101-1778 · (270) 843-5114 · Fax (270) 745-1230

Phone(270) 843-5114

Fax(270) 745-1230

Sole ProprietorNo

Medical School CMSOtherGraduated 2004

Enumeration DateApril 7, 2021

Last NPPES UpdateAugust 3, 20263 updates tracked since enumeration

NPPES CertifiedAugust 3, 2026

✔ NPI 1891374617 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

Licenses✔ Licensed in KY · 61484✔ Licensed in OH · 35.153478

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

Also ListedInternal MedicineTaxonomy 207R00000X · License 35.153478 (OH)

720 E 2ND AVE STE 203, Bowling Green, KY 42101

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kathleen Serafica Castillo Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6800296740

PECOS Enrollment IDI20260327002650

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 42101 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

$122.77 typical visit price

range $52.76 – $162.27

Typical copayment $30.69 (range $13.19 – $40.56)

Most-billed visit code 99204

Established Patient

$93.94 typical visit price

range $16.53 – $131.99

Typical copayment $23.48 (range $4.13 – $32.99)

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.

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 Kathleen Castillo's NPI number?

The NPI number for Kathleen Castillo is 1891374617. It was assigned to this individual provider in the NPPES registry on April 7, 2021.

Where is Kathleen Castillo located?

Kathleen Castillo practices at 720 E 2nd Ave Ste 203, Bowling Green, KY 42101. The listed phone number is (270) 843-5114.

What is Kathleen Castillo's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Kathleen Castillo enrolled in Medicare?

Yes. Kathleen Castillo is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Kathleen Castillo was last updated on August 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 days 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.