1. Home
  2. Directory
  3. California
  4. Victorville
  5. Internal Medicine
  6. NPI Profile

ESTHER A FERMIN MD INC
NPI 1851618326
Internal Medicine - Hematology in Victorville, CA

Active since April 23, 2010
15203 11TH STREET, SUITE A, VICTORVILLE, CA 92395(760) 245-6455(760) 245-6455 Get Directions Write a Review

NPPES record last updated: October 12, 2011. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Esther A Fermin Md Inc NPPES

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

ESTHER A FERMIN MD INC (NPI 1851618326) is a healthcare organization registered as a hematology in Victorville, California and active in the NPI registry since April 2010. The organization lists Esther A Fermin, Md, as its authorized official.

NPPES Registry Identity

NPI1851618326
Entity TypeOrganization
Primary Taxonomy207RH0000X
Legal Business NameESTHER A FERMIN MD INC
Location Address15203 11TH STREET, SUITE AVictorville, CA 92395
Mailing AddressPo Box 1280Victorville, CA 92393-1280 · (760) 245-6455 · Fax (760) 245-6455
Phone(760) 245-6455
Fax(760) 245-6455
Organization SubpartNo
Authorized OfficialEsther A FerminMd · (760) 245-6455
Enumeration DateApril 23, 2010
Last NPPES UpdateOctober 12, 2011
✔ NPI 1851618326 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · HematologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0000X
License✔ Licensed in CA · A25858
Definition
An internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, clotting disorders, sickle cell disease, hemophilia, leukemia and lymphoma.
15203 11TH STREET, Victorville, CA 92395
Open in Google Maps ↗

Other Identifiers 2

Medicare PIN00A258580CA
Medicare UPINA86985CA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Esther A Fermin Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by January 31, 2027

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20100917000941Non-DME Part B · Clinic/Group PracticeDue dateJanuary 31, 2027
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Esther A Fermin MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Esther Fermin, MD
Internal Medicine
NPI 1013018514
15203 11TH ST STE A
Victorville, CA 92395
(760) 245-6455
✔ PECOS3.3 mi

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 Esther A Fermin MD Inc's NPI number?

The NPI number for Esther A Fermin MD Inc is 1851618326. It was assigned to this organization in the NPPES registry on April 23, 2010.

Where is Esther A Fermin MD Inc located?

Esther A Fermin MD Inc is located at 15203 11th Street Suite A, Victorville, CA 92395. The listed phone number is (760) 245-6455.

What is Esther A Fermin MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology, with taxonomy code 207RH0000X.

Is Esther A Fermin MD Inc enrolled in Medicare?

Yes. Esther A Fermin MD Inc is registered in the Medicare PECOS enrollment system.

When is Esther A Fermin MD Inc's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by January 31, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Esther A Fermin MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Esther A Fermin MD Inc. 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 Esther A Fermin MD Inc was last updated on October 12, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years 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.