Quick answers
- Does Kristin Hennessey accept Medicare assignment?
- Medicare's clinician data says Kristin Hennessey may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Kristin Hennessey see?
- In 2024, CMS data shows 204 Original Medicare patients and 644 services for Kristin Hennessey. This counts Original Medicare only and measures volume, not quality.
- What is Kristin Hennessey's NPI number?
- 1851643969. 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 Kristin Hennessey, 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 | 204 |
|---|---|
| Services billed to Medicare | 644 |
| Different services or procedures | 44 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)150 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)119 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)80 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)33 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)23 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 pressure65%
- Arthritis44%
- Anxiety32%
- Chronic kidney disease26%
- Diabetes23%
Hospitals where Kristin Hennessey works
Medicare's Facility Affiliation Data lists Kristin Hennessey 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.
- Lahey Hospital & Medical Center, BurlingtonBurlington, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220171
- Winchester HospitalWinchester, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220105
Practice locations
Addresses where Kristin Hennessey is enrolled with Medicare (CMS data updated October 2, 2026).
- 1021 Main St, Suite 203Winchester, MA 01890
- 161 Jackson StLowell, MA 01852
- 41 Mall RdBurlington, MA 01805
- 701 Edgewater Dr, Suite 420Wakefield, MA 01880
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Winchester
Clinicians with the same Medicare primary specialty in Winchester, MA — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2015 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1851643969 |
| 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