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MR. TARCISIO CALIBO DIAZ MD
NPI 1346379583
Internal Medicine - Endocrinology, Diabetes & Metabolism in Corona, CA

Active since March 05, 2007PECOS EnrolledAccepts Medicare AssignmentCLIA 05D0944331 · Waiver
900 S MAIN ST, SUITE 100, CORONA, CA 92882(951) 738-9081(951) 738-9081 Get Directions Write a Review

NPPES record last updated: January 13, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 22, 2023, Apr 4, 2023 (2 updates tracked since 2023).

About Mr. Tarcisio Calibo Diaz Md NPPES

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

MR. TARCISIO CALIBO DIAZ MD (NPI 1346379583) is an individual endocrinology, diabetes & metabolism provider in Corona, California, licensed in California (A46295) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through February 21, 2027, and is a graduate of Perelman School Of Med At The University Of Pennsylvania (1989).

NPPES Registry Identity

NPI1346379583
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameMR. TARCISIO CALIBO DIAZCredential: MD
Location Address900 S MAIN ST, SUITE 100Corona, CA 92882-3401
Mailing Address900 S Main Street, Suite 100Corona, CA 92882-3554 · (951) 738-9081 · Fax (951) 738-9081
Phone(951) 738-9081
Fax(951) 738-9081
Sole ProprietorYes
Medical School CMSPerelman School Of Med At The University Of PennsylvaniaGraduated 1989
Enumeration DateMarch 5, 2007
Last NPPES UpdateJanuary 13, 20252 updates tracked since enumeration
NPPES CertifiedJanuary 13, 2025
✔ NPI 1346379583 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · A46295
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
900 S MAIN ST, Corona, CA 92882
Open in Google Maps ↗

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, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mr. Tarcisio Calibo Diaz Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6406740117
PECOS Enrollment IDI20040212000530
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D0944331

Tarcisio C Diaz MD · Corona, CA
Active · expires Feb 21, 2027
CLIA Number05D0944331
Laboratory TypePhysician Office
Certificate Effective DateFebruary 22, 2025
Certificate Expiration DateFebruary 21, 2027
Laboratory DirectorTarcisio C. Diaz
Laboratory Phone(951) 738-9081
Laboratory LocationTarcisio C Diaz MD900 S Main Street, Suite 100, Corona, CA 92882
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
159 services69 patients
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with provider supplied equipment 95250
This process involves a tiny sensor placed under your skin that checks your blood sugar levels in tissue fluid regularly. The sensor sends these readings to a device, allowing you to track your levels in real-time. This is provided by your healthcare provider.
141 services52 patients
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 95251
This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.
139 services52 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
136 services71 patients
Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow G0181
This service involves a physician overseeing your care while you receive Medicare-covered services from a home health agency. The care you're receiving is complex and involves various disciplines. The physician isn't physically present but regularly supervises your treatment to ensure optimal health outcomes.
31 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92882 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
$136.04 typical visit price
range $59.60 – $179.42
Typical copayment $34.01 (range $14.90 – $44.85)
Most-billed visit code 99204
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
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 12

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

Supplies for maintenance of insulin infusion catheter, per week A4224
DME-Other DME · category DE017N
7 suppliers32 claims636 services$16.83 avg. paid by Medicare
Supplies for external insulin infusion pump, syringe type cartridge, sterile, each A4225
DME-Other DME · category DE017N
7 suppliers32 claims1,145 services$2.36 avg. paid by Medicare
Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
10 suppliers29 claims86 services$5.83 avg. paid by Medicare
Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466
DME-Other DME · category DE005N
1 supplier12 claims12 services$780.96 avg. paid by Medicare
External ambulatory infusion pump, insulin E0784
DME-Other DME · category DE017N
2 suppliers24 claims24 services$328.78 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
4 suppliers30 claims30 services$69.27 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 8

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

DR. NEUNG SOO KIM M.D.
Radiology (Radiation Oncology)
900 S MAIN ST, SUITE 111
CORONA, CA 92882
Riverside County (951) 973-7380
WOMEN'S INSTITUTE FOR INTERTILITY AND REPRODUCTIVE MEDICNE
Obstetrics & Gynecology (Gynecology)
900 S MAIN ST, SUITE 102
CORONA, CA 92882
Riverside County (951) 279-8600
EVE SUMMERS PNP
Nurse Practitioner (Pediatrics)
900 S MAIN ST
CORONA, CA 92882
Riverside County (951) 734-5450
DR. THOMAS JOHN CACHUR JR. D.O.
Obstetrics & Gynecology
900 S MAIN ST, SUITE 209
CORONA, CA 92882
Riverside County (951) 735-6969
MRS. KAYLA MARIE YINGER N.P.
Nurse Practitioner (Women's Health)
900 S MAIN ST, SUITE 102
CORONA, CA 92882
Riverside County (951) 279-8600
DR. CHRISTINE MICHAEL LAUTFY D.C.
Chiropractor
900 S MAIN ST, SUITE 110
CORONA, CA 92882
Riverside County (951) 372-9441
TARCISIO C. DIAZ, M.D. A MEDICAL CORPORATION
Internal Medicine (Endocrinology, Diabetes & Metabolism)
900 S MAIN ST, SUITE 100
CORONA, CA 92882
Riverside County (951) 738-9081
KAYLA M. YINGER N.P., INC.
Nurse Practitioner (Obstetrics & Gynecology)
900 S MAIN ST, SUITE 102
CORONA, CA 92882
Riverside County (951) 279-8600

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 Tarcisio Diaz's NPI number?

The NPI number for Tarcisio Diaz is 1346379583. It was assigned to this individual provider in the NPPES registry on March 5, 2007.

Where is Tarcisio Diaz located?

Tarcisio Diaz practices at 900 S Main St Suite 100, Corona, CA 92882. The listed phone number is (951) 738-9081.

What is Tarcisio Diaz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Tarcisio Diaz enrolled in Medicare?

Yes. Tarcisio Diaz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Does Tarcisio Diaz hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0944331) is associated with this NPI, valid through February 21, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Tarcisio Diaz was last updated on January 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.