Ramesh V Nathan, 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.

• Adventist Health Simi Valley Hospital · Simi Valley, CA · listed as Simi Valley Hospital & Health Care Services
• Los Robles Hospital & Medical Center Hospital · Thousand Oaks, CA · listed as Los Robles Hospital and Medical Center
• Angels Of Summit Home Health Home health agency · Simi Valley, CA · listed as Summit Home Health, Inc
• Assisted Home Care Home health agency · Mission Hills, CA · listed as Assisted Home Care, Inc
• Northridge Hospital Medical Center Hospital · Northridge, CA
• Access Tlc Home Health Care Home health agency · San Fernando, CA

Colleagues at Mark H Mazur MD and Barry Statner MD a Professional Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 15 clinicians in the practice; 8 are shown here.

• Fides D Antonio, NP Nurse Practitioner · Walnut Creek, CA
• Chantel Bachman, FNP Family Nurse Practitioner · Davis, CA
• Mr. Andre Cristian De Jesus, RN, FNP, MBA Family Nurse Practitioner · Murrieta, CA
• Sujay Dutta, MD Infectious Disease Physician · Thousand Oaks, CA
• Carolyn Downey Kelly, FNP Family Nurse Practitioner · Saint Louis, MO
• Andrew MA, MD Infectious Disease Physician · Thousand Oaks, CA
• Nancy Moua Family Nurse Practitioner · San Jose, CA
• Bharathi Rasagolla, FNP Family Nurse Practitioner · Irvine, CA

Other providers in Thousand Oaks

• Andrew MA, MD

  Individual Infectious Disease Physician · NPI 1528299708

  2220 Lynn Rd Ste 301, Thousand Oaks, CA 91360-8005 · (805) 495-1073

• Mark H Mazur MD & Barry Statner MD a Professional Corporation

  Organization Infectious Disease Physician · NPI 1376631341

  375 Rolling Oaks Dr Ste 210, Thousand Oaks, CA 91361-1028 · (805) 495-1073

• Mark H Mazur, MD

  Individual Infectious Disease Physician · NPI 1245328228

  2220 Lynn Rd Ste 301, Thousand Oaks, CA 91360 · (805) 495-1073

• Philip James McDonald, MD

  Individual Infectious Disease Physician · NPI 1952644122

  375 Rolling Oaks Dr Ste 210, Thousand Oaks, CA 91361-1028 · (805) 495-1073