KATHERINE ELIZABETH TWOMBLEY M.D.
NPI 1356532311
Pediatrics - Pediatric Nephrology in Jacksonville, FL

Q: What is Katherine Twombley's NPI number?

The NPI number for Katherine Twombley is 1356532311. It was assigned to this individual provider in the NPPES registry on August 6, 2007.

Q: What is Katherine Twombley's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Nephrology, with taxonomy code 2080P0210X.

Active since August 06, 2007PECOS Enrolled

807 CHILDRENS WAY, JACKSONVILLE, FL 32207(904) 697-3600(904) 687-3927 Get Directions Write a Review

NPPES record last updated: November 12, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Katherine Elizabeth Twombley M.d. NPPES

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

KATHERINE ELIZABETH TWOMBLEY M.D. (NPI 1356532311) is an individual pediatric nephrology provider in Jacksonville, Florida, licensed in Florida (ME175490) and active in the NPI registry since August 2007. She is enrolled in Medicare PECOS, is affiliated with Musc Medical Center, and is a graduate of Medical University Of South Carolina College Of Medicine (2004).

NPPES Registry Identity

NPI1356532311

Entity TypeIndividualFemale

Primary Taxonomy2080P0210X

Provider Legal NameKATHERINE ELIZABETH TWOMBLEYCredential: M.D.

Location Address807 CHILDRENS WAYJacksonville, FL 32207-8426

Mailing Address10140 Centurion Pkwy NJacksonville, FL 32256-0532 · (904) 697-4100

Phone(904) 697-3600

Fax(904) 687-3927

Sole ProprietorNo

Medical School CMSMedical University Of South Carolina College Of MedicineGraduated 2004

Enumeration DateAugust 6, 2007

Last NPPES UpdateNovember 12, 2025

NPPES CertifiedNovember 12, 2025

✔ NPI 1356532311 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code2080P0210X

Licenses✔ Licensed in FL · ME175490✔ Licensed in TX · N6732✔ Licensed in SC · 34967

Definition

A pediatrician who deals with the normal and abnormal development and maturation of the kidney and urinary tract, the mechanisms by which the kidney can be damaged, the evaluation and treatment of renal diseases, fluid and electrolyte abnormalities, hypertension and renal replacement therapy.

807 CHILDRENS WAY, Jacksonville, FL 32207

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include First Choice Next, Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company).Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Katherine Elizabeth Twombley M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7618000555

PECOS Enrollment IDI20260420002729

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

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

The Nemours Foundation

Same address

Multi-Specialty

807 CHILDRENS WAY
Jacksonville, FL 32207

Reassigned Medicare billing, Florida enrollment
703 clinicians in this Medicare group

NPI 1265585806 (904) 697-3600

University Medical Associates

197 mi

Multi-Specialty

2125 CHARLIE HALL BLVD, SUITE 100
Charleston, SC 29414

Reassigned Medicare billing, South Carolina enrollment
Medicare enrollment name: University Medical Associates Of The Medical University Of South Carol
2,594 clinicians in this Medicare group

NPI 1760413835 (843) 792-1414

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

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Musc Medical Center

Acute Care Hospitals · Charleston, SC

2/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number420004

Location169 Ashley AveCharleston, SC 29425 · Charleston County

Emergency services Birthing friendly

Referred Medical Equipment & Supplies CMS DME claims 5

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tacrolimus, immediate release, oral, 1 mg J7507

Treatment-Treatment - Miscellaneous · category RX029N

3 suppliers78 claims9,990 services$0.29 avg. paid by Medicare

Prednisone, immediate release or delayed release, oral, 1 mg J7512

Treatment-Treatment - Miscellaneous · category RX029N

3 suppliers23 claims4,480 services$0.01 avg. paid by Medicare

Mycophenolate mofetil, oral, 250 mg J7517

Treatment-Treatment - Miscellaneous · category RX029N

3 suppliers38 claims7,060 services$0.17 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511

Treatment-Chemotherapy · category RH012N

3 suppliers54 claims54 services$17.85 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512

Treatment-Chemotherapy · category RH012N

3 suppliers111 claims130 services$11.85 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

DR. KENNETH FRANZ-JOSEPH HEARN MD

Pediatrics

807 CHILDRENS WAY
JACKSONVILLE, FL 32207

Duval County (904) 697-3600

MR. HUGH E. GRIFFENKRANZ PA-C

Physician Assistant

807 CHILDRENS WAY
JACKSONVILLE, FL 32207

Duval County (904) 390-3737

JACQUELINE M NOE

Physician Assistant

807 CHILDRENS WAY, NEMOURS CHILDRENS CLINIC, JACKSONVILLE
JACKSONVILLE, FL 32207

Duval County (904) 697-3600

ERIC P. SHERLIN R.PH

Pharmacist

807 CHILDRENS WAY
JACKSONVILLE, FL 32207

Duval County (904) 390-3601

KELLY MARIE SUMMERS ARNP

Nurse Practitioner

807 CHILDRENS WAY
JACKSONVILLE, FL 32207

Duval County (904) 697-3600

ROBERT C SPRECHER MD

Otolaryngology (Pediatric Otolaryngology)

807 CHILDRENS WAY, NEMOURS CHILDRENS CLINIC, JACKSONVILLE
JACKSONVILLE, FL 32207

Duval County (904) 697-3694

DR. DOREEN RADJENOVIC ARNP

Nurse Practitioner

807 CHILDRENS WAY
JACKSONVILLE, FL 32207

Duval County (904) 390-3759

GRACE ELIZABETH ALLEMAN SLP

Speech-Language Pathologist

807 CHILDRENS WAY
JACKSONVILLE, FL 32207

Duval County (907) 697-3600

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 Twombley's NPI number?

The NPI number for Katherine Twombley is 1356532311. It was assigned to this individual provider in the NPPES registry on August 6, 2007.

Where is Katherine Twombley located?

Katherine Twombley practices at 807 Childrens Way, Jacksonville, FL 32207. The listed phone number is (904) 697-3600.

What is Katherine Twombley's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Nephrology, with taxonomy code 2080P0210X.

Is Katherine Twombley enrolled in Medicare?

Yes. Katherine Twombley is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Katherine Twombley's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Twombley reassigns Medicare benefits to 2 organizations: The Nemours Foundation (Jacksonville, FL) and University Medical Associates (Charleston, SC). 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 Twombley's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Katherine Twombley accept?

Health plans from First Choice Next, Florida Blue (BlueCross BlueShield FL) and Florida Blue HMO (a BlueCross BlueShield FL company) list Katherine Twombley as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Katherine Twombley affiliated with any hospitals?

According to CMS data, Katherine Twombley is affiliated with Musc Medical Center.

When was this NPI record last updated?

The NPPES record for Katherine Twombley was last updated on November 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.