AYMARA YADIRA CHANG LOPEZ M.D.
NPI 1215257365
Internal Medicine - Infectious Disease in El Paso, TX

Active since June 10, 2010PECOS EnrolledAccepts Medicare Assignment
4801 ALBERTA AVE, EL PASO, TX 79905(915) 215-5200 Get Directions Write a Review

NPPES record last updated: June 20, 2024. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Jun 20, 2024, Nov 20, 2015 (2 updates tracked since 2015).

About Aymara Yadira Chang Lopez M.d. NPPES

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

AYMARA YADIRA CHANG LOPEZ M.D. (NPI 1215257365) is an individual infectious disease provider in El Paso, Texas, licensed in Texas (Q3493) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS, is affiliated with University Medical Center Of El Paso, and is a graduate of Other (2003).

NPPES Registry Identity

NPI1215257365
Entity TypeIndividualFemale
Primary Taxonomy207RI0200X
Provider Legal NameAYMARA YADIRA CHANG LOPEZCredential: M.D.
Location Address4801 ALBERTA AVEEl Paso, TX 79905-2707
Mailing Address4336 Donnybrook PlEl Paso, TX 79902-1312 · (713) 410-3088
Sole ProprietorNo
Medical School CMSOtherGraduated 2003
Enumeration DateJune 10, 2010
Last NPPES UpdateJune 20, 20242 updates tracked since enumeration
NPPES CertifiedJune 20, 2024
✔ NPI 1215257365 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
Licenses✔ Licensed in TX · Q3493✔ Licensed in FL · TRN19088
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
Also ListedInternal MedicineTaxonomy 207R00000X · License BP10038313 (TX)
4801 ALBERTA AVE, El Paso, TX 79905

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Aymara Yadira Chang Lopez 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 ID840429320
PECOS Enrollment IDI20151130000065
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 Aymara Chang Lopez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Pediatrics
4801 ALBERTA AVE.
El Paso, TX 79905
  • Reassigned Medicare billing, Texas enrollment
  • 856 clinicians in this Medicare group

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

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
98 services28 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
33 services33 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.
20 services20 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
19 services19 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Medical Center Of El Paso

Acute Care Hospitals · El Paso, TX
2/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number450024
Location4815 Alameda AveEl Paso, TX 79905 · El Paso County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 79905 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.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers11 claims11 services$15.47 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 suppliers11 claims11 services$70.49 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 20

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

Nurse Practitioner (Family)
4801 ALBERTA AVE
EL PASO, TX 79905
Internal Medicine (Gastroenterology)
4801 ALBERTA AVE
EL PASO, TX 79905
Student in an Organized Health Care Education/Training Program
4801 ALBERTA AVE
EL PASO, TX 79905
Nurse Practitioner (Acute Care)
4801 ALBERTA AVE
EL PASO, TX 79905
Student in an Organized Health Care Education/Training Program
4801 ALBERTA AVE
EL PASO, TX 79905
Case Manager/Care Coordinator
4801 ALBERTA AVE
EL PASO, TX 79905
Emergency Medicine
4801 ALBERTA AVE, STE. B3200
EL PASO, TX 79905
Nurse Practitioner (Acute Care)
4801 ALBERTA AVE
EL PASO, TX 79905

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 Aymara Chang Lopez's NPI number?

The NPI number for Aymara Chang Lopez is 1215257365. It was assigned to this individual provider in the NPPES registry on June 10, 2010.

Where is Aymara Chang Lopez located?

Aymara Chang Lopez practices at 4801 Alberta Ave, El Paso, TX 79905. The listed phone number is (915) 215-5200.

What is Aymara Chang Lopez's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Aymara Chang Lopez enrolled in Medicare?

Yes. Aymara Chang Lopez 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.

Which organization bills Medicare for Aymara Chang Lopez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aymara Chang Lopez reassigns Medicare benefits to Texas Tech University Health Sciences Center El Paso (El Paso, TX). 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 Aymara Chang Lopez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Aymara Chang Lopez accept?

Health plans from Blue Cross and Blue Shield of Texas, Harbor Health, Imperial Insurance Companies, Inc., UnitedHealthcare and WellPoint list Aymara Chang Lopez 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.

Is Aymara Chang Lopez affiliated with any hospitals?

According to CMS data, Aymara Chang Lopez is affiliated with University Medical Center Of El Paso.

When was this NPI record last updated?

The NPPES record for Aymara Chang Lopez was last updated on June 20, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.