Quick answers
- Does Theresa M. Koester accept Medicare assignment?
- Yes. Medicare's clinician data says Theresa M. Koester 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 Theresa M. Koester see?
- In 2024, CMS data shows 91 Original Medicare patients and 105 services for Theresa M. Koester. This counts Original Medicare only and measures volume, not quality.
- What is Theresa M. Koester's NPI number?
- 1962568402. 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 Theresa M. Koester, 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 patients | 91 |
|---|---|
| Services billed to Medicare | 105 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Repair of groin hernia using an endoscope (49650)33 services
- Removal of gallbladder using an endoscope (47562)11 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 cholesterol75%
- High blood pressure67%
- Arthritis45%
- Ischemic heart disease30%
- Depression23%
- Osteoporosis16%
Hospitals where Theresa M. Koester works
Medicare's Facility Affiliation Data lists Theresa M. Koester 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.
- Sibley Memorial HospitalWashington, DC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 090005
Practice locations
Addresses where Theresa M. Koester is enrolled with Medicare (CMS data updated October 2, 2026).
- 5255 Loughboro Rd NWWashington, DC 20016 (202) 660‑6500
Group practices
Medicare enrollment lists Theresa M. Koester as a member of this group (CMS data updated October 2, 2026).
- Johns Hopkins University713 clinicians in the group
Specialties
- Physician Assistantprimary
Find other clinicians: Physician Assistant, District of Columbia →
Other physician assistants in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Other clinicians in Johns Hopkins University
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| School | Rutgers New Jersey Medical School |
|---|---|
| Graduation year | 2006 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1962568402 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians