JOHN ROSS WILLIAMS M.D.
NPI 1336536200
Neurological Surgery in Houston, TX
About John Ross Williams M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN ROSS WILLIAMS M.D. (NPI 1336536200) is an individual neurological surgery provider in Houston, Texas, licensed in Maryland (D94083) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Memorial Hermann - Texas Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John Ross Williams M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Memorial Hermann - Texas Medical Center
Acute Care Hospitals · Houston, TXMemorial Hermann Hospital System
Acute Care Hospitals · Houston, TXMemorial Hermann Memorial City Hospital
Acute Care Hospitals · Houston, TXMemorial Hermann Katy Hospital
Acute Care Hospitals · Katy, TXMemorial Hermann Sugar Land Hospital
Acute Care Hospitals · Sugar Land, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77030 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HOUSTON, TX 77030
HOUSTON, TX 77030
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Williams's NPI number?
The NPI number for John Williams is 1336536200. It was assigned to this individual provider in the NPPES registry on April 18, 2015.
Where is John Williams located?
John Williams practices at 6400 Fannin St Ste 2150, Houston, TX 77030. The listed phone number is (713) 486-8000.
What is John Williams's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is John Williams enrolled in Medicare?
Yes. John Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
What insurance does John Williams accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 4 other insurers list John Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is John Williams affiliated with any hospitals?
According to CMS data, John Williams is affiliated with Memorial Hermann - Texas Medical Center, Memorial Hermann Hospital System, Memorial Hermann Memorial City Hospital, Memorial Hermann Katy Hospital and Memorial Hermann Sugar Land Hospital.
When was this NPI record last updated?
The NPPES record for John Williams was last updated on June 8, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.