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ESTEBAN ALFONZO RUIZ MD,PA
NPI 1174793871
Internal Medicine in Hudson, FL

Active since March 10, 2008
13910 FIVAY RD STE 15, HUDSON, FL 34667(727) 375-1953(727) 484-6173 Get Directions Write a Review

NPPES record last updated: July 14, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 14, 2026, Jun 5, 2024 (2 updates tracked since 2024).

About Esteban Alfonzo Ruiz Md,pa NPPES

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

ESTEBAN ALFONZO RUIZ MD,PA (NPI 1174793871) is a healthcare organization registered as an internal medicine in Hudson, Florida and active in the NPI registry since March 2008. The organization lists Kelly Fox, Office Administrator, as its authorized official.

NPPES Registry Identity

NPI1174793871
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameESTEBAN ALFONZO RUIZ MD,PA
Location Address13910 FIVAY RD STE 15Hudson, FL 34667-7130
Mailing Address13910 Fivay Rd Ste 15Hudson, FL 34667-7130 · (727) 484-6169 · Fax (727) 484-6173
Phone(727) 375-1953
Fax(727) 484-6173
Organization SubpartNo
Authorized OfficialKelly FoxOffice Administrator · (727) 484-6169
Enumeration DateMarch 10, 2008
Last NPPES UpdateJuly 14, 20262 updates tracked since enumeration
NPPES CertifiedJuly 14, 2026
✔ NPI 1174793871 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 · ME53805
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.
13910 FIVAY RD STE 15, Hudson, FL 34667
Open in Google Maps ↗

Other Identifiers 1

Medicaid049101200FL

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Esteban Alfonzo Ruiz Md,pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Esteban Alfonzo Ruiz MD,pa, which bills Medicare for the services this clinician delivers.

Clinician (1)

Esteban Ruiz, MD
Internal Medicine
NPI 1740226794
13910 FIVAY RD STE 15
Hudson, FL 34667
(727) 484-6169
✔ PECOS✔ Accepts MedicareSame address

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

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 Esteban Alfonzo Ruiz Md,pa's NPI number?

The NPI number for Esteban Alfonzo Ruiz Md,pa is 1174793871. It was assigned to this organization in the NPPES registry on March 10, 2008.

Where is Esteban Alfonzo Ruiz Md,pa located?

Esteban Alfonzo Ruiz Md,pa is located at 13910 Fivay Rd Ste 15, Hudson, FL 34667. The listed phone number is (727) 375-1953.

What is Esteban Alfonzo Ruiz Md,pa's specialty?

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

Is Esteban Alfonzo Ruiz Md,pa enrolled in Medicare?

Yes. Esteban Alfonzo Ruiz Md,pa is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Esteban Alfonzo Ruiz Md,pa?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Esteban Alfonzo Ruiz Md,pa. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Esteban Alfonzo Ruiz Md,pa was last updated on July 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.