Dr. Ping-Hsin Chen, MD

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.

• Johns Hopkins Hospital, The Hospital · Baltimore, MD · listed as The Johns Hopkins Hospital
• Northwest Hospital Center Hospital · Randallstown, MD · listed as Northwest Hospital Center, Inc
• University Of Md St Joseph Medical Center Hospital · Towson, MD · listed as University of Maryland St Joseph Medical Center, LLC
• DaVita Baltimore County Dialysis Center Dialysis facility · Randallstown, MD · listed as Mason Dixon Dialysis Facilities Inc
• DaVita Kidney Home Center PD Dialysis facility · Windsor Mill, MD · listed as Kidney Home Center LLC
• Johns Hopkins Howard County Medical Center Hospital · Columbia, MD

Colleagues at Mid-Atlantic Nephrology Associates PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 58 clinicians in the practice; 12 are shown here.

• Dr. Hossam Abdalla, MD Nephrology Physician · Glen Burnie, MD
• Saira Amir, MDMPH Nephrology Physician · Catonsville, MD
• Freda Boateng, CRNP, FNP Family Nurse Practitioner · Lutherville, MD
• Eric M. Brown, MD Nephrology Physician · Owings Mills, MD
• Ajay Bhasker Rao Gangalam, MD Internal Medicine Physician · Catonsville, MD
• MS. Lorraine Maureen Harriott, AGAC-NP Acute Care Nurse Practitioner · Owings Mills, MD
• Shahab A Khan, MD Nephrology Physician · Glen Burnie, MD
• Dr. Leonid A Klopouh, MD Nephrology Physician · Owings Mills, MD
• Dr. Sonal Navin Korgaonkar, MD Nephrology Physician · Owings Mills, MD
• Dr. Thabiso Maseko Phiri, MD Nephrology Physician · Towson, MD
• Dr. Mary A Pieprzak, MD Nephrology Physician · Columbia, MD
• Dr. Jeffrey Posner, MD Nephrology Physician · Owings Mills, MD

Other providers in Columbia

• Dr. Ajay Kumar, MD

  Individual Nephrology Physician · NPI 1922141241

  5999 Harpers Farm Rd Ste W250, Columbia, MD 21044-3017 · (410) 772-8822

• Jia Liu, MD

  Individual Nephrology Physician · NPI 1043282544

  5999 Harpers Farm Rd Ste W250, Columbia, MD 21044-3017 · (410) 772-8822

• Dr. Tin O Maung, MD

  Individual Nephrology Physician · NPI 1033117908

  5999 Harpers Farm Rd Ste W250, Columbia, MD 21044-3017 · (410) 772-8822

• Mid-Atlantic Nephrology Associates PA

  Organization Nephrology Physician · NPI 1689423568

  5999 Harpers Farm Rd Ste W250, Columbia, MD 21044-3017 · (410) 772-8822