Mr. Zakary P Walker, PA-C

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

• Suburban Hospital Hospital · Bethesda, MD
• Adventist Healthcare Shady Grove Medical Center Hospital · Rockville, MD
• Adventist Healthcare White Oak Medical Center Hospital · Silver Spring, MD

Colleagues at Usacs Integrated Acute Care Services of Maryland LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 182 clinicians in the practice; 12 are shown here.

• Iyad Aljadba, MD Internal Medicine Physician · Johnstown, PA
• Prisca Anyeh, PA Physician Assistant · Lanham, MD
• Dr. Emmanuel K. Fai, PA-C, PHD Physician Assistant · Lanham, MD
• Bishal Gauchan, PA-C Physician Assistant · Hanover, MD
• Dr. Milan Guragain, MD Student in an Organized Health Care Education/Training Program · Jersey City, NJ
• Tesfay Mezgebe Hailu Physician Assistant · Peoria, AZ
• Moad Radaideh, MD Internal Medicine Physician · Rochester, NY
• Dr. Amin Fawaz Saad, MD Internal Medicine Physician · Cheverly, MD
• Preetinder Singh Sandhu, MD Internal Medicine Physician · Baltimore City, MD
• Mr. Dale Ramchan Jr Seepersad, MD Internal Medicine Physician · Cumberland, MD
• Dr. Swati Singh, MD Internal Medicine Physician · Takoma Park, MD
• Dr. Usha Kiran Yenigalla, MD Family Medicine Physician · Rockville, MD

Other providers in Rockville

• Robert Ryan

  Individual Medical Physician Assistant · NPI 1750306049

  9901 Medical Center Dr, Rockville, MD 20850-3357 · (301) 279-6550

• Jennifer Leigh Schaeffer, PA-C

  Individual Medical Physician Assistant · NPI 1881149847

  9601 Blackwell Rd Ste 275, Rockville, MD 20850-3472 · (301) 545-5512

• Mr. Warren Schmidt, PA-C

  Individual Medical Physician Assistant · NPI 1326362104

  121 Congressional Ln #409, Rockville, MD 20852-1542 · (301) 881-0230

• Paul Thorn, PA-C

  Individual Medical Physician Assistant · NPI 1992816482

  15225 Shady Grove Rd Ste 102, Rockville, MD 20850-3254 · (301) 330-0661

• Jason L Wright, PA-C

  Individual Medical Physician Assistant · NPI 1952422834

  14995 Shady Grove Rd Ste 350, Rockville, MD 20850-8726 · (301) 251-1433

• Annemarie Zabbara, PA-C

  Individual Medical Physician Assistant · NPI 1508044926

  15225 Shady Grove Rd Ste 102, Rockville, MD 20850-3254 · (301) 330-0661