Dr. Isaac A. Castillo MD
Resident
He is located at 301 University Boulevard in Galveston, TX 77555. His National Provider Identifier (NPI) number is 1114547841. Appointment can be made via the phone number (409) 747-5727.
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Isaac A. Castillo as in-network for the following 2026 plans.
Health plans
Oscar Insurance Company
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 12 plans from Oscar Insurance Company
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Bronze Classic 4700 | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Classic Standard | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Elite + PCP Saver Plus | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Breathe Easy with Enhanced COPD Benefits | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Chronic Care CKM | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Diabetes | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Gold Classic | EPO · Gold | Preferred | Accepting new patients |
| Gold Classic Standard | EPO · Gold | Preferred | Accepting new patients |
| Gold Elite | EPO · Gold | Preferred | Accepting new patients |
| Silver Classic | EPO · Silver | Preferred | Accepting new patients |
| Silver Classic Standard | EPO · Silver | Preferred | Accepting new patients |
| Silver Simple PCP Saver | EPO · Silver | Preferred | Accepting new patients |
WellPoint
Network data as of Sep 10, 2026, as reported by the insurer.
Show all 21 plans from WellPoint
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Wellpoint Essential Bronze 4000 HSA (+ Incentives) | HMO · Expanded Bronze | Participating | Accepting new patients |
| Wellpoint Essential Bronze 6000 ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Expanded Bronze | Participating | Accepting new patients |
| Wellpoint Essential Bronze 6000 Adult Dental/Vision ($0 Virtual PCP+$0 Select Drugs) | HMO · Expanded Bronze | Participating | Accepting new patients |
| Wellpoint Essential Bronze 7500 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Expanded Bronze | Participating | Accepting new patients |
| Wellpoint Essential Bronze POS 4500 ($0 Virtual PCP + $0 Select Drugs + Incentives) | POS · Expanded Bronze | Participating | Accepting new patients |
| Wellpoint Essential Bronze POS 5500 ($0 Virtual PCP + $0 Select Drugs + Incentives) | POS · Expanded Bronze | Participating | Accepting new patients |
| Wellpoint Essential Bronze POS 7500 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) | POS · Expanded Bronze | Participating | Accepting new patients |
| Wellpoint Essential Catastrophic (+ Incentives) | HMO · Catastrophic | Participating | Accepting new patients |
| Wellpoint Essential Gold 1500 ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Gold | Participating | Accepting new patients |
| Wellpoint Essential Gold 2000 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Gold | Participating | Accepting new patients |
| Wellpoint Essential Gold 800 ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Gold | Participating | Accepting new patients |
| Wellpoint Essential Gold POS 1000 ($0 Virtual PCP + $0 Select Drugs + Incentives) | POS · Gold | Participating | Accepting new patients |
| Wellpoint Essential Gold POS 2000 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) | POS · Gold | Participating | Accepting new patients |
| Wellpoint Essential Gold POS 700 ($0 Virtual PCP + $0 Select Drugs + Incentives) | POS · Gold | Participating | Accepting new patients |
| Wellpoint Essential Silver 1850 ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Silver | Participating | Accepting new patients |
| Wellpoint Essential Silver 3500 ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Silver | Participating | Accepting new patients |
| Wellpoint Essential Silver 3500 Adult Dental/Vision ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Silver | Participating | Accepting new patients |
| Wellpoint Essential Silver 6000 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) | HMO · Silver | Participating | Accepting new patients |
| Wellpoint Essential Silver POS 2500 ($0 Virtual PCP + $0 Select Drugs + Incentives) | POS · Silver | Participating | Accepting new patients |
| Wellpoint Essential Silver POS 4000 ($0 Virtual PCP + $0 Select Drugs + Incentives) | POS · Silver | Participating | Accepting new patients |
| Wellpoint Essential Silver POS 6000 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) | POS · Silver | Participating | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Isaac A. Castillo is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Isaac A. Castillo is enrolled to bill Medicare as a Order And Referring Only - Orthopedic Surgery (also registered under: Practitioner - Orthopedic Surgery) .
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Looking for more Residents?
Out of the 101 residents in this region, here are 10 randomly selected ones for you to explore.
- Gender: Male
- Address: 6431 Fannin Street Suite Msb 2116 Houston, 77030, TX
- Gender: Male
- Address: 301 University Boulevard Galveston, 77555, TX
- Gender: Female
- Address: 100 Sweetbriar Drive Columbus, 78934, TX
- Gender: Female
- Address: 301 University Boulevard Galveston, 77555, TX
- Gender: Female
- Address: 1028 Old Cedar Bluff Road Knoxville, 37923, TN
- Gender: Female
- Address: 300 University Boulevard Galveston, 77555, TX
- Gender: Male
- Address: 301 University Boulevard Galveston, 77555, TX
- Gender: Female
- Address: 55 Fruit Street Boston, 2114, MA
- Gender: Male
- Address: 455 School Street Suite 49 Tomball, 77375, TX
- Gender: Female
- Address: 301 University Boulevard Galveston, 77555, TX
Questions & Answers
Where can you meet with Dr. Isaac Anthony Castillo?
Dr. Isaac Anthony Castillo's office is located at 301 University Boulevard in Galveston, TX 77555.
Does Dr. Isaac Anthony Castillo accept insurance?
Dr. Isaac Anthony Castillo is listed in-network for 33 ACA Marketplace (Obamacare/HealthCare.gov) plans from Oscar Insurance Company, WellPoint. See the Marketplace plans section for details.