KRISTA NICOLE GRENNAN MD
NPI 1093418428
Internal Medicine in Jacksonville, FL

Q: What is Krista Grennan's NPI number?

The NPI number for Krista Grennan is 1093418428. It was assigned to this individual provider in the NPPES registry on March 24, 2023.

Q: What is Krista Grennan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Krista Grennan was last updated on June 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since March 24, 2023PECOS Enrolled

4500 SAN PABLO RD S, JACKSONVILLE, FL 32224(904) 953-2000 Get Directions Write a Review

NPPES record last updated: June 12, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 6, 2023, Mar 24, 2023 (2 updates tracked since 2023).

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About Krista Nicole Grennan Md NPPES

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

KRISTA NICOLE GRENNAN MD (NPI 1093418428) is an individual internal medicine provider in Jacksonville, Florida, licensed in Florida (ME170196) and active in the NPI registry since March 2023. She is enrolled in Medicare PECOS, is affiliated with Mayo Clinic, and is a graduate of Univ Of Central Florida, College Of Medicine (2023).

NPPES Registry Identity

NPI1093418428

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameKRISTA NICOLE GRENNANCredential: MD

Location Address4500 SAN PABLO RD SJacksonville, FL 32224-1865

Mailing Address4500 San Pablo Rd SJacksonville, FL 32224-1865

Phone(904) 953-2000

Sole ProprietorNo

Medical School CMSUniv Of Central Florida, College Of MedicineGraduated 2023

Enumeration DateMarch 24, 2023

Last NPPES UpdateJune 12, 20262 updates tracked since enumeration

NPPES CertifiedJune 12, 2026

✔ NPI 1093418428 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in FL · ME170196

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

4500 SAN PABLO RD S, Jacksonville, FL 32224

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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)

Krista Nicole Grennan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4385003649

PECOS Enrollment IDI20260714001510

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.

Hospital Affiliations CMS Care Compare

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

Mayo Clinic

Acute Care Hospitals · Jacksonville, FL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number100151

Location4500 San Pablo RdJacksonville, FL 32224 · Duval County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 32224 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

$130.04 typical visit price

range $56.00 – $171.84

Typical copayment $32.51 (range $14.00 – $42.96)

Most-billed visit code 99204

Established Patient

$99.16 typical visit price

range $17.57 – $139.16

Typical copayment $24.79 (range $4.39 – $34.79)

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.

KATHERINE L WALSH PA-C/MPH

Physician Assistant