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JOSIAS GUILLERMO DE TRINIDAD CASTRO M.D.
NPI 1861831646
Internal Medicine in Parlier, CA

Active since June 14, 2013PECOS Enrolled
155 S NEWMARK AVE, PARLIER, CA 93648(559) 646-1200 Get Directions Write a Review

NPPES record last updated: February 1, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 1, 2022, Apr 26, 2021, Jan 18, 2017 (3 updates tracked since 2017).

About Josias Guillermo De Trinidad Castro M.d. NPPES

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

JOSIAS GUILLERMO DE TRINIDAD CASTRO M.D. (NPI 1861831646) is an individual internal medicine provider in Parlier, California, licensed in California (C174719) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1861831646
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJOSIAS GUILLERMO DE TRINIDAD CASTROCredential: M.D.
Location Address155 S NEWMARK AVEParlier, CA 93648-2531
Mailing Address155 S Newmark AveParlier, CA 93648-2531 · (559) 646-1200
Phone(559) 646-1200
Sole ProprietorYes
Enumeration DateJune 14, 2013
Last NPPES UpdateFebruary 1, 20223 updates tracked since enumeration
NPPES CertifiedFebruary 1, 2022
✔ NPI 1861831646 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in CA · C174719✔ Licensed in TX · R0703
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.
155 S NEWMARK AVE, Parlier, CA 93648
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Josias Guillermo De Trinidad Castro M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Josias De Trinidad Castro reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Reedley Community Hospital
4.4 mi
General Acute Care Hospital
372 W. CYPRESS AVE
Reedley, CA 93654
  • Reassigned Medicare billing, California enrollment
  • 315 clinicians in this Medicare group
NPI 1336167550 (559) 638-8155

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93648 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
$133.94 typical visit price
range $58.87 – $176.60
Typical copayment $33.48 (range $14.71 – $44.15)
Most-billed visit code 99204
Established Patient
$103.36 typical visit price
range $19.28 – $144.60
Typical copayment $25.84 (range $4.82 – $36.15)
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.

Referred Medical Equipment & Supplies CMS DME claims 2

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
4 suppliers17 claims33 services$6.58 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
2 suppliers11 claims11 services$1.13 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 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. MICHELLE CADIZ RUBIO MSN, FNP-C
Nurse Practitioner (Family)
155 S NEWMARK AVE
PARLIER, CA 93648
Fresno County (559) 646-1200
DR. CARLOS F. BAYARDO MD
Family Medicine
155 S NEWMARK AVE
PARLIER, CA 93648
Fresno County (559) 646-1200

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 Josias De Trinidad Castro's NPI number?

The NPI number for Josias De Trinidad Castro is 1861831646. It was assigned to this individual provider in the NPPES registry on June 14, 2013.

Where is Josias De Trinidad Castro located?

Josias De Trinidad Castro practices at 155 S Newmark Ave, Parlier, CA 93648. The listed phone number is (559) 646-1200.

What is Josias De Trinidad Castro's specialty?

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

Is Josias De Trinidad Castro enrolled in Medicare?

Yes. Josias De Trinidad Castro is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Josias De Trinidad Castro's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Josias De Trinidad Castro reassigns Medicare benefits to Reedley Community Hospital (Reedley, CA). The 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 Josias De Trinidad Castro's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Josias De Trinidad Castro was last updated on February 1, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.