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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CARLOS LUIS ALEJOS MD
NPI 1083302681
Internal Medicine in Harlingen, TX

Active since May 01, 2023PECOS Enrolled
2101 PEASE ST, HARLINGEN, TX 78550(956) 389-6565 Get Directions Write a Review

NPPES record last updated: August 19, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Aug 19, 2026, May 1, 2023 (2 updates tracked since 2023).

About Carlos Luis Alejos Md NPPES

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

CARLOS LUIS ALEJOS MD (NPI 1083302681) is an individual internal medicine provider in Harlingen, Texas, licensed in Texas (W4408) and active in the NPI registry since May 2023. He is enrolled in Medicare PECOS and is a graduate of Other (2026).

NPPES Registry Identity

NPI1083302681
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameCARLOS LUIS ALEJOSCredential: MD
Location Address2101 PEASE STHarlingen, TX 78550-8307
Mailing AddressPo Box 5730Belfast, ME 04915-5700 · (888) 402-7256
Phone(956) 389-6565
Sole ProprietorNo
Medical School CMSOtherGraduated 2026
Enumeration DateMay 1, 2023
Last NPPES UpdateAugust 19, 20262 updates tracked since enumeration
NPPES CertifiedAugust 19, 2026
✔ NPI 1083302681 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 · W4408
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.
2101 PEASE ST, Harlingen, TX 78550
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Carlos Luis Alejos Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9537626718
PECOS Enrollment IDI20260806004938
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78550 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.

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.

HELEN DELORES PADGETT CRNA
Nurse Anesthetist, Certified Registered
2101 PEASE ST
HARLINGEN, TX 78550
Cameron County (956) 389-1100
YAHYA DANESHBOD MD
Pathology (Anatomic Pathology & Clinical Pathology)
2101 PEASE ST
HARLINGEN, TX 78550
Cameron County (956) 389-6565
MRS. MARY PETERS-BENITEZ O.T.
Occupational Therapist
2101 PEASE ST
HARLINGEN, TX 78550
Cameron County (956) 389-1690
JANETLY LUCIA REINOSO JIMENEZ
Student in an Organized Health Care Education/Training Program
2101 PEASE ST
HARLINGEN, TX 78550
Cameron County (956) 454-0568
SABINO VEGA JR. MSN, NP
Nurse Practitioner (Family)
2101 PEASE ST
HARLINGEN, TX 78550
Cameron County (956) 389-5000
DR. JESUS GUZMAN JR. DO
Hospitalist
2101 PEASE ST
HARLINGEN, TX 78550
Cameron County (956) 389-1100
ROBIN MELINDA WOODARD CRNA
Nurse Anesthetist, Certified Registered
2101 PEASE ST
HARLINGEN, TX 78550
Cameron County (956) 389-1100
LUIS PABLO LEE M.D.
Pediatrics (Pediatric Critical Care Medicine)
2101 PEASE ST
HARLINGEN, TX 78550
Cameron County (956) 389-1100

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 Carlos Alejos's NPI number?

The NPI number for Carlos Alejos is 1083302681. It was assigned to this individual provider in the NPPES registry on May 1, 2023.

Where is Carlos Alejos located?

Carlos Alejos practices at 2101 Pease St, Harlingen, TX 78550. The listed phone number is (956) 389-6565.

What is Carlos Alejos's specialty?

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

Is Carlos Alejos enrolled in Medicare?

Yes. Carlos Alejos is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Carlos Alejos was last updated on August 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 49 days 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.