Haytham Allaham

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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.

• University Of Maryland Medical Center Hospital · Baltimore, MD

Colleagues at University of Maryland Physicians PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 390 clinicians in the practice; 12 are shown here.

• Neil Kumar Agarwal, MD Internal Medicine Physician · Baltimore, MD
• Hiba Ahmed, MD Nephrology Physician · Baltimore, MD
• Ashley Helen Barnes, MD Infectious Disease Physician · Baltimore, MD
• Preeti Chandra, MD Nephrology Physician · Baltimore, MD
• Dr. Joel Villanueva Chua Infectious Disease Physician · Baltimore, MD
• Erica H Cole, CRNP Acute Care Nurse Practitioner · Baltimore, MD
• Hyun Ji, MD Internal Medicine Physician · Rochester, MN
• Poonam Mathur, DO Infectious Disease Physician · Baltimore, MD
• Samuel A. Patteson, CRNP Critical Care Medicine Nurse Practitioner · Baltimore, MD
• Dr. Nitin Seam, MD Critical Care Medicine (Internal Medicine) Physician · Washington, DC
• Selina Su, PA-C Physician Assistant · Baltimore, MD
• Kerin Alice Webber Physician Assistant · Baltimore, MD

Other providers in Baltimore

• Syed Saad Ali, MD

  Individual Internal Medicine Physician · NPI 1235661810

  201 E University Pkwy Dept OF Medicine, Baltimore, MD 21218-2829 · (410) 554-2284

• Malaz Alissa, MD

  Individual Internal Medicine Physician · NPI 1790163202

  201 E University Pkwy Dept OF Medicine, Baltimore, MD 21218 · (410) 554-2284

• Zakari Aliyu, MD

  Individual Internal Medicine Physician · NPI 1679539464

  6340 Security Blvd Ste 100, Baltimore, MD 21207-5284 · (410) 368-3120

• Bargas Alkhzouz, MD

  Individual Internal Medicine Physician · NPI 1730756214

  201 E University Pkwy Dept OF Medicine, Baltimore, MD 21218 · (410) 554-2284

• Rakesh Allamneni, MD

  Individual Internal Medicine Physician · NPI 1902330350

  201 E University Pkwy Dept OF Medicine, Baltimore, MD 21218-2829 · (410) 554-2284

• Allan H Macht PA

  Organization Internal Medicine Physician · NPI 1194512863

  575 S Charles St Ste 200, Baltimore, MD 21201-2482 · (410) 727-3615

• Dr. Gregory Maness Allen, MD

  Individual Internal Medicine Physician · NPI 1376986331

  600 N Wolfe St, Baltimore, MD 21287-0005 · (410) 955-7911

• John C. Allen, MD

  Individual Internal Medicine Physician · NPI 1023436839

  22 S Greene St, Baltimore, MD 21201 · (672) 141-5156