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● Active Type 1 · Individual

Alyssa Cirilo Estill, CRNA

Nurse Anesthetist, Certified Registered·Houston, TX· NPI 1003306903 · Enumerated 2018 · 8 years on NPI
Estill is 1 of 1,161 nurse anesthetist, certified registered providers in Houston and 1 of 6,765 in Texas.
NPI age
8 years
Enumerated 2018-05-16
Primary specialty
Nurse Anesthetist, Certified Registered
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2026-09-24
Source: CMS NPPES provider record
Sole proprietor
No
May be part of a larger org

How this provider compares

Across 6765 active nurse anesthetist, certified registered providers in Texas.

NPI age
8 years
↓ 5 yr below median (13 yr)
State licenses
1 state
17% of peers hold multiple states
Subspecialties
0
35% of peers hold subspecialties

NPI lifetime · 2018 → 2026

2018-05Enumerated in NPPES
2026-09Middle name changed
2018 2026

Where they practice

Practice location
1500 Citywest Blvd Ste 300
Houston, TX 77042
📞 7136204000
Mailing address
11511 Shadow Creek Pkwy, Credentialing Services
Pearland, TX 775847298
📞 7134420000

Additional practice locations

1 secondary location on file with NPPES.

Location 2
22407 Holzwarth Rd
Spring, TX 773891933
📞 3466744000

Specialties

  • Nurse Anesthetist, Certified Registered Primary
    (1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in...
    TX license #AP137700 taxonomy 367500000X

Medicare directory context

Attributes below come from the CMS Doctors & Clinicians dataset used by Medicare Care Compare, retrieved 2026-10-12. They apply only to this clinician's public Medicare listing.

Medicare specialties
Certified Registered Nurse Anesthetist (crna)
Largest Medicare group
2750 members
Largest listed enrollment group

Facility affiliations reported by CMS

  • U S Anesthesia Partners Of Texas, PA

Medicare listing data does not guarantee that a clinician is accepting new patients or that a service is covered. View the CMS dataset →

Change history (from NPPES delta log)

  1. 2026-09-28
    Middle name: CIRILO

Practice context

Part of a multi-provider practice. 301 other active providers share this practice address in NPPES.

Recently enumerated nearby: 9 new nurse anesthetist, certified registered providers have been added in Houston in the last 180 days. See all →
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How to verify this provider

  1. Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
  2. Check the state license is currently active.State licensing boards publish current status; NPPES does not.
  3. Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.

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