Quick answers
- Does Clarissa L. Harrington accept Medicare assignment?
- Yes. Medicare's clinician data says Clarissa L. Harrington 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 Clarissa L. Harrington see?
- In 2024, CMS data shows 165 Original Medicare patients and 1,041 services for Clarissa L. Harrington. This counts Original Medicare only and measures volume, not quality.
- What is Clarissa L. Harrington's NPI number?
- 1033818869. 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 Clarissa L. Harrington, 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 | 165 |
|---|---|
| Services billed to Medicare | 1,041 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)424 services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)376 services
- Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes (99305)108 services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes (99307)41 services
- Nursing facility discharge day management, 30 minutes or less (99315)25 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%
- Arthritis63%
- Diabetes59%
- Chronic kidney disease52%
- Ischemic heart disease50%
Hospitals where Clarissa L. Harrington works
Medicare's Facility Affiliation Data lists Clarissa L. Harrington 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.
- Mercy Catholic Medical Center- Mercy FitzgeraldDarby, PA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 390156
Practice locations
Addresses where Clarissa L. Harrington is enrolled with Medicare (CMS data updated October 2, 2026).
- 1501 Lansdowne Ave, Suite 303Darby, PA 19023 (484) 494‑8646
- 2230 S Broad StPhiladelphia, PA 19145 (215) 334‑3869
Group practices
Medicare enrollment lists Clarissa L. Harrington as a member of this group (CMS data updated October 2, 2026).
- PA Rehab Associates PC3 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Darby
Clinicians with the same Medicare primary specialty in Darby, PA — not a recommendation.
Other clinicians in PA Rehab Associates PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033818869 |
| 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