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Dr. Maria L. Walker, MD

Family Medicine (Family Medicine Physician)

  • Medicare participating

At a glance

Medical school
Harvard Medical School (1982)
Years since graduation
44
In the NPI registry since
2006
Medicare patients seen, 2024
175

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

  • 1982Medical school: Harvard Medical School
  • 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

  • Family Medicine Physician primary
    GA license 025306

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

Map: Family Medicine 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
175
Services billed
631
Patients’ average age
71
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 30-39 minutes376140
Established patient office or other outpatient visit, 20-29 minutes7964
New patient office or other outpatient visit, 30-44 minutes3838
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit3131
Injection of drug or substance under skin or into muscle2916
Established patient office or other outpatient visit, 40-54 minutes2319
Urinalysis, manual test1711
X-ray of chest, 2 views1212
New patient office or other outpatient visit, 45-59 minutes1111

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, 6 companies reported 11 payments worth $237 in total to this clinician.

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 Georgia →

Other Family Medicine clinicians in Decatur

Sources

NPI registry (CMS NPPES, November 2026; record last updated December 29, 2022), 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 1548213366. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.