Quick answers
- Does Megan Zemrose accept Medicare assignment?
- Yes. Medicare's clinician data says Megan Zemrose 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 Megan Zemrose see?
- In 2024, CMS data shows 132 Original Medicare patients and 173 services for Megan Zemrose. This counts Original Medicare only and measures volume, not quality.
- What is Megan Zemrose's NPI number?
- 1134462401. 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 Megan Zemrose, 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 | 132 |
|---|---|
| Services billed to Medicare | 173 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)82 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)47 services
- Evaluation of single, dual, multiple lead or leadless pacemaker system (93288)16 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%
- Ischemic heart disease75%
- Atrial fibrillation70%
- Heart failure60%
- Arthritis53%
Hospitals where Megan Zemrose works
Medicare's Facility Affiliation Data lists Megan Zemrose 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.
- Frederick Health HospitalFrederick, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210005
- MedStar Washington Hospital CenterWashington, DC · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 090011
- Meritus Medical CenterHagerstown, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210001
Practice locations
Addresses where Megan Zemrose is enrolled with Medicare (CMS data updated October 2, 2026).
- 163 Thomas Johnson DrFrederick, MD 21702 (202) 877‑7685
- 29955 Three Notch Rd, 100 Mmg at Charlotte HallCharlotte Hall, MD 20622 (301) 290‑5300
- 400 W 7th StFrederick, MD 21701 (240) 566‑3300
Group practices
Medicare enrollment lists Megan Zemrose as a member of this group (CMS data updated October 2, 2026).
- MedStar Medical Group II LLC3,767 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Frederick
Clinicians with the same Medicare primary specialty in Frederick, MD — not a recommendation.
Other clinicians in MedStar Medical Group II LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2013 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1134462401 |
| 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