Allergy & Immunology

Dr. Christopher R. Collaco, MD

Allergist and immunologist in Houston, TX

Advanced Asthma and Allergy Center3914 Gramercy St A Ste AHouston, TX 77025(713) 888-0881Listed on Healthgrades, WebMD, Medicare and the NPI registry

NPI 1982622510 · NPI registry · University of Texas Medical Branch at Galveston · graduated 1999

Patient experience

Healthgrades4.9 out of 5 from 28 ratings7 written reviews · latest Apr 2026Read the reviews on Healthgradeschecked Nov 2026
WebMD5.0 out of 5 from 20 ratingsNo written reviewsRead the reviews on WebMDchecked Nov 2026

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

Allergy and Immunology · American Board of Allergy and Immunology

Source: American Board of Allergy and Immunology lookup, matched by name · checked Nov 2026

Procedure experience

Allergy skin testing: 1,772 times for Medicare patients
Allergy shots (immunotherapy): 787 times for Medicare patients

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

Hospitals

No hospital affiliations reported to Medicare.

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

Texas medical license

License L3266 · Active · expires Aug 2028

Disciplinary status: None

Source: Texas Medical Board · checked Nov 2026

Payments from drug and device companies (2025)

$10,003 across 44 payments

ARS Pharmaceuticals Operations, Inc.: $7,864
Galderma Laboratories, L.P.: $402
Genzyme Corporation: $260

Many of these payments are small, such as meals. A payment does not mean wrongdoing.

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

Community Health Choice · 16 plans

Marketplace (ACA)

Community Premier Bronze 003 HSALast checked Nov 1, 2026 · confirm with the office.
Community Premier Bronze 018 HSALast checked Nov 1, 2026 · confirm with the office.
Community Premier Gold 001 Off-ExchangeLast checked Nov 1, 2026 · confirm with the office.
Community Premier Gold 005Last checked Nov 1, 2026 · confirm with the office.
Community Premier Gold 021Last checked Nov 1, 2026 · confirm with the office.
Community Premier Silver 012Last checked Nov 1, 2026 · confirm with the office.
Community Premier Silver 012 Off-ExchangeLast checked Nov 1, 2026 · confirm with the office.
Community Premier Silver 020Last checked Nov 1, 2026 · confirm with the office.
Community Premier Silver 020 Off-ExchangeLast checked Nov 1, 2026 · confirm with the office.
Community Select Bronze 016 HSALast checked Nov 1, 2026 · confirm with the office.
Community Select Gold 022Last checked Nov 1, 2026 · confirm with the office.
Community Select Gold 022 Fort BendLast checked Nov 1, 2026 · confirm with the office.
Community Select Silver 019Last checked Nov 1, 2026 · confirm with the office.
Community Select Silver 019 Fort BendLast checked Nov 1, 2026 · confirm with the office.
Community Select Silver 019 Fort Bend Off-ExchangeLast checked Nov 1, 2026 · confirm with the office.
Community Select Silver 019 Off-ExchangeLast checked Nov 1, 2026 · confirm with the office.

Community Health Choice last updated these listings Sep 1, 2026.

Source: Community Health Choice Marketplace provider file · checked Nov 2026

UnitedHealthcare · 16 plans

Medicare Advantage

AARP Medicare Advantage from UHC TX-0006 (PPO)Last checked Oct 5, 2026 · confirm with the office.
AARP Medicare Advantage from UHC TX-0009 (HMO-POS)Last checked Oct 5, 2026 · confirm with the office.
AARP Medicare Advantage from UHC TX-0015 (HMO-POS)Last checked Oct 5, 2026 · confirm with the office.
AARP Medicare Advantage from UHC TX-001P (HMO-POS)Last checked Oct 5, 2026 · confirm with the office.
AARP Medicare Advantage from UHC TX-4P (HMO-POS)Last checked Oct 5, 2026 · confirm with the office.
AARP Medicare Advantage Giveback from UHC TX-31 (PPO)Last checked Oct 5, 2026 · confirm with the office.
AARP Medicare Advantage Patriot No Rx TX-MA01 (HMO-POS)Last checked Oct 5, 2026 · confirm with the office.
AARP Medicare Advantage Patriot No Rx TX-MA05 (PPO)Last checked Oct 5, 2026 · confirm with the office.
UHC Complete Care Support TX-1A (Regional PPO C-SNP)Last checked Oct 5, 2026 · confirm with the office.
UHC Complete Care TX-29 (Regional PPO C-SNP)Last checked Oct 5, 2026 · confirm with the office.
UHC Complete Care TX-2P (HMO-POS C-SNP)Last checked Oct 5, 2026 · confirm with the office.
UHC Dual Complete TX-D01P (HMO-POS D-SNP)Last checked Oct 5, 2026 · confirm with the office.
UHC Dual Complete TX-S001 (Regional PPO D-SNP)Last checked Oct 5, 2026 · confirm with the office.
UHC Dual Complete TX-V01P (HMO-POS D-SNP)Last checked Oct 5, 2026 · confirm with the office.
UHC Medicare Advantage TX-0030 (Regional PPO)Last checked Oct 5, 2026 · confirm with the office.
UHC Nursing Home Plan TX-F001 (PPO I-SNP)Last checked Oct 5, 2026 · confirm with the office.

Source: UnitedHealthcare provider directory · checked Oct 2026

Insurance companies listed on Healthgrades

Listed on Healthgrades, confirm with the office.

AetnaWhole Health - Memorial Hermann HMO, Open Choice PPO, Managed Choice (Open Access) POS, Choice Plus POS II, Premier Care Network Plus - Innovation Health, Elect Choice (Open Access) EPO
Blue Cross and Blue Shield of TexasBestChoice PPO, Blue Essentials HMO
Blue Cross Blue ShieldBlue Card PPO, Blue Card High Performance Network HPN
CignaCigna PPO, SureFit Houston, Open Access Plus
CurativeCurative EPO, Curative PPO Plus, Curative PPO
First HealthFirst Health (Coventry Health Care) PPO
HumanaNational POS, Choice Care Network PPO, Choice POS, Choice Care PPO, Preferred PPO, HMO Premier HMO
Humana Health Plan of TexasHouston Area HMO-Standard
UnitedHealthCareNavigate POS, Choice Plus POS, Medica Choice, Options PPO, Navigate HMO, Nexus Open Access

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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