Dianne Annette London, CRNP

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.

• University Of Md Baltimore Washington Medical Center Hospital · Glen Burnie, MD · listed as Baltimore Washington Medical Center
• University Of Md Capital Region Medical Center Hospital · Upper Marlboro, MD

Colleagues at Mdics at Bwmc LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 79 clinicians in the practice; 12 are shown here.

• Beza Assefa Internal Medicine Physician · Atlanta, GA
• Dr. Srinivas S Ayyala, MD Internal Medicine Physician · Columbus, OH
• Umu Kultumi Bah, PA-C Medical Physician Assistant · Newtown, CT
• Dr. Colin Bonhag, DO Internal Medicine Physician · Olney, MD
• Dr. Gagandeep Singh Dhillon, MD Internal Medicine Physician · Scranton, PA
• Dr. David Lauver, MD Internal Medicine Physician · Glen Burnie, MD
• Abdullahi Elsheikh Mahgoub, MD Student in an Organized Health Care Education/Training Program · Flint, MI
• Elisa Pratima Mohan, MD Student in an Organized Health Care Education/Training Program · Macon, GA
• Ayoku S Oketunji, MD Internal Medicine Physician · Glen Burnie, MD
• Brittany Pizzano, PA Medical Physician Assistant · Baltimore, MD
• Demetri Tsiolkas Hospitalist Physician · Glen Burnie, MD
• Deborah L Van Orden, CRNP Acute Care Nurse Practitioner · Glen Burnie, MD

Other providers in Columbia

• Payal Mecwan Christian, CRNP

  Individual Acute Care Nurse Practitioner · NPI 1871992933

  5755 Cedar Ln Howard County General Hospital, Columbia, MD 21044-2912 · (410) 740-7890

• Angela Denise Drewniak, CRNP

  Individual Acute Care Nurse Practitioner · NPI 1750539375

  10710 Charter Dr Ste 240, Columbia, MD 21044-3128 · (410) 997-7246

• Elizabeth Claire Heetderks, ACNP

  Individual Acute Care Nurse Practitioner · NPI 1285941955

  5755 Cedar Ln, Columbia, MD 21044-2912 · (410) 740-7890

• Floyd Joseph Johnson III, NP

  Individual Acute Care Nurse Practitioner · NPI 1033340799

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

• Chastity Levinia Scarlett, AGACNP-BC

  Individual Acute Care Nurse Practitioner · NPI 1881309185

  10980 Grantchester Way, Columbia, MD 21044-6097 · (410) 772-6500

• Glennda Smith, CRNP

  Individual Acute Care Nurse Practitioner · NPI 1992553747

  10710 Charter Dr Ste 130, Columbia, MD 21044-3258 · (410) 772-7000