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Emergency Medicine

Brenda K. Oatman, MD

Works at hospitals in Chambersburg, PA · Waynesboro, PA · Pennsylvania

Summary

Dr. Brenda K. Oatman, MD is an emergency medicine doctor at 112 N 7th St, Chambersburg, PA 17201. Phone: (717) 267-7146. Accepts Medicare assignment. In 2024, Brenda K. Oatman had 406 Original Medicare patients and 442 services. NPI 1609826817. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 112 N 7th St, Chambersburg, PA 17201 · Directions (3 more locations)
  • Phone: (717) 267‑7146
  • Medicare: Accepts Medicare assignment
  • Hospitals: WellSpan Chambersburg Hospital, WellSpan Waynesboro Hospital
  • Group practice: The Chambersburg Hospital (+1 more)
  • Medical school: University Of Texas Medical School At San Antonio · graduated 1995 (31 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Brenda K. Oatman, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Brenda K. Oatman accept Medicare assignment?
Yes. Medicare's clinician data says Brenda K. Oatman accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Brenda K. Oatman see?
In 2024, CMS data shows 406 Original Medicare patients and 442 services for Brenda K. Oatman. This counts Original Medicare only and measures volume, not quality.
What is Brenda K. Oatman's NPI number?
1609826817. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Brenda K. Oatman, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients406
Services billed to Medicare442
Different services or procedures9
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)313 services
  2. Emergency department visit with moderate level of medical decision making (99284)67 services
  3. Critical care, first 30-74 minutes (99291)48 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis53%
  • Chronic kidney disease48%
  • Ischemic heart disease43%
  • Anxiety43%

Hospitals where Brenda K. Oatman works

Medicare's Facility Affiliation Data lists Brenda K. Oatman at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • WellSpan Chambersburg HospitalChambersburg, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390151
  • WellSpan Waynesboro HospitalWaynesboro, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390138

Practice locations

Addresses where Brenda K. Oatman is enrolled with Medicare (CMS data updated October 2, 2026).

  • 112 N 7th StChambersburg, PA 17201
  • 112 N 7th St, Wellspan Chambersburg ER PhysiciansChambersburg, PA 17201 (717) 267‑7146
  • 176 S Coldbrook Ave, The Chambersburg Hospital Psychiatric OutpaChambersburg, PA 17201 (717) 267‑7480
  • 501 E Main St, Hosp Emergency DeptWaynesboro, PA 17268 (717) 762‑7775

Group practices

Medicare enrollment lists Brenda K. Oatman as a member of these groups (CMS data updated October 2, 2026).

  • The Chambersburg Hospital30 clinicians in the group
  • Waynesboro Hospital29 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Pennsylvania →

Other emergency medicine doctors in Chambersburg

Clinicians with the same Medicare primary specialty in Chambersburg, PA — not a recommendation.

All emergency medicine doctors in Chambersburg →

Other clinicians in The Chambersburg Hospital

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Texas Medical School At San Antonio
Graduation year1995 (31 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1609826817
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians