MARY ISABEL ALEJO AGACNP-BC
NPI 1245170406
Nurse Practitioner - Critical Care Medicine in Houston, TX
About Mary Isabel Alejo Agacnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY ISABEL ALEJO AGACNP-BC (NPI 1245170406) is an individual critical care medicine provider in Houston, Texas, licensed in Texas (1230494) and active in the NPI registry since March 2026. She is enrolled in Medicare PECOS, maintains a secondary practice location in Houston, and is a graduate of Other (2025).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mary Isabel Alejo Agacnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Alejo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 2,554 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77030 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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 Mary Alejo's NPI number?
The NPI number for Mary Alejo is 1245170406. It was assigned to this individual provider in the NPPES registry on March 30, 2026.
Where is Mary Alejo located?
Mary Alejo practices at 6720 Bertner Ave, Houston, TX 77030. The listed phone number is (713) 798-2222.
What is Mary Alejo's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Critical Care Medicine, with taxonomy code 363LC0200X.
Is Mary Alejo enrolled in Medicare?
Yes. Mary Alejo is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Alejo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Alejo reassigns Medicare benefits to Baylor College Of Medicine (Houston, 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 Mary Alejo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Alejo accept?
Health plans from Blue Cross and Blue Shield of Texas list Mary Alejo 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 Mary Alejo was last updated on June 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Mary Isabel Alejo, AGACNP-BC · NPI 1245170406
Critical Care Medicine physician in Houston, Texas. Individual provider, active in the CMS NPPES registry since March 30, 2026.
## Identity
- **NPI:** 1245170406 (Entity type: Individual)
- **Enumerated:** March 30, 2026
- **Primary specialty:** Nurse Practitioner - Critical Care Medicine · taxonomy 363LC0200X
- **State license:** 1230494 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 6720 BERTNER AVE, Houston, TX 77030-2604
- **Phone:** (713) 798-2222
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Baylor College Of Medicine (NPI 1881026664, Houston, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** June 19, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1245170406) · Data from the CMS NPPES public registry.