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GREGORIO JOEL ASUNCION CASTILLO M.D.
NPI 1184695488
Internal Medicine in El Paso, TX

Active since January 27, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 45D1055230 · Waiver
10501 VISTA DEL SOL DR, SUITE 200, EL PASO, TX 79925(915) 592-8880(915) 592-8883 Get Directions Write a Review

NPPES record last updated: November 7, 2011. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Gregorio Joel Asuncion Castillo M.d. NPPES

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

GREGORIO JOEL ASUNCION CASTILLO M.D. (NPI 1184695488) is an individual internal medicine provider in El Paso, Texas, licensed in Texas (J8950) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through June 12, 2028, and is a graduate of Other (1990).

NPPES Registry Identity

NPI1184695488
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameGREGORIO JOEL ASUNCION CASTILLOCredential: M.D.
Location Address10501 VISTA DEL SOL DR, SUITE 200El Paso, TX 79925-7940
Mailing Address10501 Vista Del Sol Dr, Suite 200El Paso, TX 79925-7940 · (915) 592-8880 · Fax (915) 592-8883
Phone(915) 592-8880
Fax(915) 592-8883
Sole ProprietorYes
Medical School CMSOtherGraduated 1990
Enumeration DateJanuary 27, 2006
Last NPPES UpdateNovember 7, 2011
✔ NPI 1184695488 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TX · J8950
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.
10501 VISTA DEL SOL DR, El Paso, TX 79925
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Other Identifiers 2

Medicare UPING10718TX
Medicare PIN8C2256TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, UnitedHealthcare.Insurance ›

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

Gregorio Joel Asuncion Castillo M.d. 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 ID42288128
PECOS Enrollment IDI20040917000519
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 45D1055230

Gregorio Joel Castillo MD PA · El Paso, TX
Active · expires Jun 12, 2028
CLIA Number45D1055230
Laboratory TypePhysician Office
Certificate Effective DateJune 13, 2026
Certificate Expiration DateJune 12, 2028
Laboratory DirectorGregorio Joel A. Castillo
Laboratory Phone(915) 592-8880
Laboratory LocationGregorio Joel Castillo MD PA10501 Vista Del Sol Suite 200, El Paso, TX 79925
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 4

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 low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
150 services87 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
47 services47 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.
33 services24 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
18 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 79925 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
$126.40 typical visit price
range $54.84 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
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
7 suppliers17 claims44 services$5.41 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
2 suppliers13 claims13 services$53.87 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Patient Reviews User submitted

Reviews are submitted by site visitors and approved by a human moderator before publication.

Review by Carlos ***** November 6, 2023

5/5
Dr Castillo is a great doctor BUT his office staff is worst I have seen in my 82 years as only if I am not sick and have an appointment I can see the Dr. If I go in sick, I cannot see Dr or he is out of town!! I had Covid and could not see my Dr because they do not see sick patients controlled by office staff. BEwARE/ Do Not COME IN SICK!!!!!!
Provider 5/5 Office Staff 1/5
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Other Providers at the Same Location NPPES 3

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

GREGORIO JOEL CASTILLO, M.D. P.A.
Clinic/Center (Primary Care)
10501 VISTA DEL SOL DR, SUITE 200
EL PASO, TX 79925
El Paso County (915) 592-8880
SRINIVAS REDDY CHITTI M.D.,
Internal Medicine (Nephrology)
10501 VISTA DEL SOL DR, SUITE 210
EL PASO, TX 79925
El Paso County (915) 633-9317
SRINIVAS REDDY CHITTI MD PA
Internal Medicine (Nephrology)
10501 VISTA DEL SOL DR, SUITE 210
EL PASO, TX 79925
El Paso County (915) 633-9317

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 Gregorio Joel Castillo's NPI number?

The NPI number for Gregorio Joel Castillo is 1184695488. It was assigned to this individual provider in the NPPES registry on January 27, 2006.

Where is Gregorio Joel Castillo located?

Gregorio Joel Castillo practices at 10501 Vista Del Sol Dr Suite 200, El Paso, TX 79925. The listed phone number is (915) 592-8880.

What is Gregorio Joel Castillo's specialty?

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

Is Gregorio Joel Castillo enrolled in Medicare?

Yes. Gregorio Joel Castillo 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 Gregorio Joel Castillo hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 45D1055230) is associated with this NPI, valid through June 12, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Gregorio Joel Castillo accept?

Health plans from Blue Cross and Blue Shield of Texas and UnitedHealthcare list Gregorio Joel Castillo as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Gregorio Joel Castillo was last updated on November 7, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.