NPIMap

Individual provider Active NPI

John Ross Williams, M.D.

  • Neurological Surgery Physician
  • Houston, TX
National Provider Identifier
1336536200
Registry record updated Jun 8, 2023
On this page

Key facts

NPPES NPI Registry
Primary specialty
Neurological Surgery PhysicianTaxonomy code 207T00000X
License
D94083 Issued in MD
Practice address
6400 Fannin St Ste 2150
Houston, TX 77030-1524
Phone
(713) 486-8000
NPI assigned
Apr 18, 2015
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 8, 2023

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Neurological Surgery Physician 207T00000X D94083 MD Primary

Addresses

Primary practice location

6400 Fannin St Ste 2150
Houston, TX 77030-1524

Mailing address

6400 Fannin St Ste 2070
Houston, TX 77030-1541
Phone (713) 486-7747

Other practice location 1

325 9th Ave Dept Of
Box 359924
Seattle, WA 98104-2420
Phone (206) 744-9389

Other practice location 2

600 N Wolfe Street
meyer 7-113
Baltimore, MD 21287-2128
Phone (410) 955-4424

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20230706002132 TX Practitioner - Neurosurgery 5799087730 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Neurosurgery
Education
Other, 2015
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Ut PhysiciansGroup PAC ID 2961732193, 206 clinicians

Practice addresses (Care Compare)

6400 Fannin St
Suite 2150
Houston, TX 77030-1524
Phone (713) 486-8100

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
84.63 of 100Reported as group
Quality
68.75
Promoting interoperability
100
Improvement activities
40
Cost
72.66

Procedures performed for Medicare patients

ProcedureNumber of procedures
Spinal fusion64
Laminectomy or laminotomy (partial removal of spine bones)30
Removal of tissue1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Ut Physicians Neurological Surgery CurrentSince May 15, 2023 Accepting new patients
Memorial Hermann Health System Past Accepting new patients

Locations

6410 Fannin St
Ste LL135
Houston, TX 77030
Phone (832) 325-6543

6400 Fannin St
Ste 2150
Houston, TX 77030
Phone (713) 486-8100

11920 Astoria Blvd
Ste 292
Houston, TX 77089
Phone (713) 486-7970

6400 Fannin St
Ste 2070
Houston, TX 77030
Phone (713) 704-6731

Organizations & group practices 2

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.

Hospital & facility affiliations 18

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

View all 18

NPI Registry JSON

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

{
    "created_epoch": "1429315200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1686182400000",
    "number": "1336536200",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6400 FANNIN ST STE 2070",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770301541",
            "telephone_number": "713-486-7747"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6400 FANNIN ST STE 2150",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770301524",
            "telephone_number": "713-486-8000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "325 9th Ave Dept Of",
            "address_2": "Box 359924",
            "address_purpose": "LOCATION",
            "city": "Seattle",
            "state": "WA",
            "postal_code": "981042420",
            "country_code": "US",
            "telephone_number": "206-744-9389",
            "fax_number": "206-744-9942",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "600 N WOLFE STREET",
            "address_2": "meyer 7-113",
            "address_purpose": "LOCATION",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212872128",
            "country_code": "US",
            "telephone_number": "410-955-4424",
            "fax_number": "410-502-3399",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "JOHN",
        "middle_name": "ROSS",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-04-18",
        "last_updated": "2023-06-08",
        "certification_date": "2023-06-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "MD",
            "license": "D94083",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Houston, TX

Sources for this page

Verify at the official NPI Registry.