Dr. Peter Anthony Walker, MD

Dr. Walker practices at Memorial Hermann Sugar Land Hospital in Sugarland, Texas, part of Memorial Hermann Health System.

Dr. Walker's NPI, 1932348232, was assigned on February 10, 2009. Dr. Walker graduated from Saint Louis University School Of Medicine in 2006. Dr. Walker's Florida license number on file is ME132404.

Dr. Walker's primary practice is Memorial Hermann Sugar Land Hospital, at 17500 W Grand Parkway South, Sugarland, TX 77479 in Fort Bend County. The practice phone is (281) 725-5000.

Dr. Walker's primary practice is Memorial Hermann Sugar Land Hospital in Sugarland, Texas, part of Memorial Hermann Health System. Dr. Walker is also affiliated with Memorial Hermann-Texas Medical Center. The medical group on file is UT Physicians.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walker practices, 2 sites in all. Vendor and product names are available with a free account.

Surgery is Dr. Walker's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Walker is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Walker's licenses on file in 2 states: Florida and Texas.

Dmand AI lists abdominal hernia repair surgery, acute gallbladder or bile duct inflammation, colon removal, esophagus, stomach, or upper small intestine surgery, gallbladder removal, groin hernia surgery, lung resection and upper GI endoscopy among the conditions Dr. Walker treats.

CMS data shows 100 Medicare services from Dr. Walker across 4 procedure codes in 2024, for 82 Medicare patients. Medicare paid $7,684 for them.

CMS counts 82 Medicare patients who saw Dr. Walker in 2026. The largest group is 65 to 74, with 37 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 26% are also on Medicaid. Their average risk score is 2.48, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Walker's median patient age at 59, with 60% women.

In 2026, Dr. Walker wrote 107 Medicare Part D claims for 44 patients. 99% of them were for generic drugs. CMS names the drug for 79 of them, across 4 drugs with 11 or more claims each, at $2,638 in total drug cost. In 2023, CMS named 61 claims across 2 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Walker for performance year 2026, reported as part of a group. Dr. Walker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 45 papers to Dr. Walker, published from 2008 to 2024. 2010 was the busiest year, with 6. The most frequent topics are Brain Injuries, Rats, Sprague-Dawley and Disease Models, Animal. Dr. Walker has published most often in Surg Endosc. Dr. Walker's most frequent co-authors are Shinil K. Shah, DO, Charles Samuel Cox, MD and Fernando Jimenez, MD.

Dmand AI links Dr. Walker to 1 clinical trial.

CMS Open Payments shows 137 general payments to Dr. Walker from 31 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 67% of the total. Medtronic, Inc. paid the most, $2,515. It also lists 2 research payments totaling $6,700 from 2016 to 2025.

Dmand AI lists 1 award for Dr. Walker.

Dr. Walker graduated from Saint Louis University School Of Medicine in 2006. Dr. Walker is a member of ACS.

Dr. Walker is in network with 22 carriers, including Elevance, Aetna and United Healthcare. HMO plans come from the most carriers, 13. Check the plan with the practice before a visit.