ENT

Dr. Ann M. Gillenwater, MD

Ear, nose and throat doctor in Houston, TX

Practice: Doctors at University of Texas M D Anderson

NPI 1548354350 · NPI registry · University of Virginia School of Medicine · graduated 1987

Patient experience

Not enough reviews mention specific topics yet for a breakdown.

Accepting new patients, according to Healthgrades (checked Nov 2026). Call the office to confirm.

Board certification

  • Otolaryngology · American Board of Otolaryngology
  • Otolaryngology-Head and Neck Surgery · American Board of Otolaryngology - Head and Neck Surgery

Source: Listed on Healthgrades · checked Nov 2026

Procedure experience

No Medicare procedure data. This usually means the doctor sees few Medicare patients or is newer to practice.

Source: CMS Medicare Physician & Other Practitioners, 2024. Medicare patients only; CMS hides counts under 11 · checked Nov 2026

Hospitals

  • University of Texas M D Anderson · Not rated by CMS

Source: CMS Facility Affiliation and Hospital General Information · checked Nov 2026

Texas medical license

License H5446 · Active · expires May 2028

Disciplinary status: None

Source: Texas Medical Board · checked Nov 2026

Medicare quality score

84.3 out of 100 (reported by the doctor's group)

Source: CMS Merit-based Incentive Payment System, 2024 · checked Nov 2026

Payments from drug and device companies (2025)

None reported.

Source: CMS Open Payments, 2025 · checked Nov 2026

Insurance

Plans in the insurers’ own directories

Medicare Advantage, Medicaid, CHIP and Marketplace plans from public directories run by the insurers. Employer plans are not listed here yet.

Blue Cross and Blue Shield of Texas · 19 plans

Marketplace (ACA)

  • Blue Advantage Bronze HMO 204Network: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Bronze HMO 301Network: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Bronze HMO StandardNetwork: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Gold HMO 206Network: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Gold HMO 603Network: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Gold HMO StandardNetwork: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Plus Bronze 303Network: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Plus Bronze 305Network: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Plus Bronze StandardNetwork: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Plus Gold 203Network: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Plus Gold 803Network: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Plus Gold StandardNetwork: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Plus Silver 202Network: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Plus Silver 605Network: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Plus Silver StandardNetwork: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Security HMO 200Network: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Silver HMO 205Network: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Silver HMO 801Network: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.
  • Blue Advantage Silver HMO StandardNetwork: Blue Advantage HMOLast checked Nov 1, 2026 · confirm with the office.

Blue Cross and Blue Shield of Texas last updated these listings Oct 16, 2026.

Source: Blue Cross and Blue Shield of Texas Marketplace provider file · checked Nov 2026

Insurance companies listed on Healthgrades

Listed on Healthgrades, confirm with the office.

  • AetnaElect Choice (Open Access) EPO, Managed Choice (Open Access) POS, Choice Plus POS II, Open Choice PPO
  • Blue Cross and Blue Shield of TexasBlue Essentials HMO, BestChoice PPO
  • Blue Cross Blue ShieldBlue Card PPO
  • CignaSureFit Houston, Open Access Plus, Cigna PPO
  • CurativeCurative PPO, Curative EPO, Curative PPO Plus
  • First HealthFirst Health (Coventry Health Care) PPO
  • UnitedHealthCareMedica Choice, Nexus Open Access, Options PPO, Navigate POS, Choice Plus POS, Navigate HMO

Source: Listed on Healthgrades, confirm with the office · checked Nov 2026

Where this doctor practices

Map of this doctor’s offices

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