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Dr. Mara D. Chambers, MD

Hematology & Oncology (Hematology & Oncology Physician)

740 S Limestone
Lexington, KY 40536

Who else practices at this address →

Fayette County includes mental health (15% of residents) shortage areas. About shortage areas

Call (859) 323-5661

  • Medicare participating

At a glance

Years since graduation
33
In the NPI registry since
2006
Medicare patients seen, 2024
162

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 1993Medical school: University of Louisville School of Medicine
  • 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Hematology & Oncology Physician primary
    KY license 31021
  • Internal Medicine Physician
    KY license 31021
  • Medical Oncology Physician
    KY license 31021

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Hematology & Oncology per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
162
Services billed
276
Patients’ average age
70
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 30-39 minutes12079
Established patient office or other outpatient visit, 40-54 minutes11043
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes1818
New patient office or other outpatient visit, 45-59 minutes1717
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes1515
New patient office or other outpatient visit, 60-74 minutes1313

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Payments from drug and device companies

In 2025, 1 companies reported 1 payments worth $66.18 in total to this clinician.

By company
Spr Therapeutics, Inc$66.18
By type
Food and Beverage$66.18

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Kentucky →

Industry-funded research

Named as a principal investigator on 2 industry-funded studies in 2025, from 2 companies. The companies reported $24,299 in research payments for these studies, mostly to the institutions running them.

From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.

Other Hematology & Oncology clinicians in Lexington

Sources

NPI registry (CMS NPPES, November 2026; record last updated December 10, 2012), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1639180680. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.