Sien Chen, M.D.

Primary specialty

Glaucoma Specialist (Ophthalmology) PhysicianTaxonomy code 207WX0009X

License

303514 Issued in NY

Practice address

3551 Roger Brooke Dr
Fort Sam Houston, TX 78234-4504

Phone

(210) 539-9582

NPI assigned

Jun 18, 2014

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in TX

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Radiology Associates of Southwest Louisiana

  • Diagnostic Radiology Physician
  • Alexandria, LA
  • NPI 1033215710
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1403049600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770249600000",
    "number": "1326452210",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3551 ROGER BROOKE DR",
            "city": "FORT SAM HOUSTON",
            "state": "TX",
            "postal_code": "782344504",
            "telephone_number": "210-539-9582"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3551 ROGER BROOKE DR",
            "city": "FORT SAM HOUSTON",
            "state": "TX",
            "postal_code": "782344504",
            "telephone_number": "210-539-9582"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1100 Wilford Hall Loop Bldg 4554",
            "address_purpose": "LOCATION",
            "city": "Jbsa Lackland",
            "state": "TX",
            "postal_code": "782365638",
            "country_code": "US",
            "telephone_number": "210-539-9582",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHEN",
        "first_name": "SIEN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-06-18",
        "last_updated": "2026-02-05",
        "certification_date": "2026-02-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "NE",
            "license": "28779",
            "primary": false
        },
        {
            "code": "207WX0009X",
            "taxonomy_group": "",
            "desc": "Ophthalmology, Glaucoma Specialist",
            "state": "NY",
            "license": "303514",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Michael Chatterton, PSYD
• Nhat B Chau, MD
• Jayanta Krishna Chaudhuri, M.D.
• Avinash Chaurasia, MD
• Adriana Hwa Cheever, D.O.
• Steve Ifan Chen, MD
• Wan Pin Chen, PMHNP
• Anna Chevez, LCSW
• Megan Childs, MD
• Daniel Preston Chiles, D.O.

• Glaucoma Specialist (Ophthalmology) Physician in Fort Sam Houston, TX
• Providers in Fort Sam Houston, TX by specialty
• Glaucoma Specialist (Ophthalmology) Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 5, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.