Jessica Anne Vossler, 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.

• Frederick Health Hospital Hospital · Frederick, MD · listed as Frederick Health Hospital Inc
• Amedisys Home Health Home health agency · Westminster, MD

Colleagues at Privia Care Center LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 287 clinicians in the practice; 12 are shown here.

• Robin Brown, NP Adult Health Nurse Practitioner · Havre de Grace, MD
• Jody Lynn Cochran, CRNP Family Nurse Practitioner · Ijamsville, MD
• Rebecca Lynn Crowell, DO Obstetrics Physician · Oakland, MD
• Aden Farouk Physician Assistant · Princess Anne, MD
• Mrs. Deidre Ann Fisher, APRN-FNP Registered Nurse · Bethesda, MD
• Dr. Daniel Harry Gatazka, DO Student in an Organized Health Care Education/Training Program · Scranton, PA
• Lauren R. Heckhaus, PA-C Physician Assistant · Walkersville, MD
• Mrs. Karen S Levin, CRNP Family Nurse Practitioner · Rockville, MD
• Mrs. Jessica Anne McFarland, PMHNP-BC Registered Nurse · Frederick, MD
• Dr. Amandeep Singh, MD Internal Medicine Physician · Ellicott City, MD
• Dr. Usha Sivakumar, MD Internal Medicine Physician · Frederick, MD
• Yen Vo, DNP Registered Nurse · Baltimore, MD

Other providers in Gaithersburg

• Shama G Shaikh, PA-C

  Individual Physician Assistant · NPI 1972997534

  818 W Diamond Ave Ste 120, Gaithersburg, MD 20878-1450 · (301) 963-6334

• Chelsea Shakes, PA-C

  Individual Physician Assistant · NPI 1104653450

  16220 Frederick Rd Ste 213, Gaithersburg, MD 20877-4017 · (301) 963-2770

• Michelle Ekua Serwaa Tweedie, PA-C

  Individual Physician Assistant · NPI 1518646645

  7 Granite Pl Ste 14, Gaithersburg, MD 20878-6607 · (240) 631-1170

• Irene Margaret Vangsness, PA

  Individual Physician Assistant · NPI 1609810431

  803 Russell Ave Ste # 1 Smc, Gaithersburg, MD 20879-3584 · (301) 869-0700