Quick answers
- Does Linda J. Groiss accept Medicare assignment?
- Yes. Medicare's clinician data says Linda J. Groiss 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 Linda J. Groiss see?
- In 2024, CMS data shows 333 Original Medicare patients and 549 services for Linda J. Groiss. This counts Original Medicare only and measures volume, not quality.
- What is Linda J. Groiss's NPI number?
- 1356441679. 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 Linda J. Groiss, 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 | 333 |
|---|---|
| Services billed to Medicare | 549 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)293 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)144 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)58 services
- Injection into tendon or ligament (20550)14 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 pressure61%
- Arthritis59%
- High cholesterol57%
- Depression26%
- Anxiety26%
- Diabetes21%
Hospitals where Linda J. Groiss works
Medicare's Facility Affiliation Data lists Linda J. Groiss 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.
- Cheshire Medical CenterKeene, NH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 300019
- Mary Hitchcock Memorial HospitalLebanon, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 300003
- Monadnock Community HospitalPeterborough, NH · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 301309
Practice locations
Addresses where Linda J. Groiss is enrolled with Medicare (CMS data updated October 2, 2026).
- 580 Court StKeene, NH 03431
Group practices
Medicare enrollment lists Linda J. Groiss as a member of this group (CMS data updated October 2, 2026).
- Cheshire Medical Center61 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Keene
Clinicians with the same Medicare primary specialty in Keene, NH — not a recommendation.
Other clinicians in Cheshire Medical Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 1986 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1356441679 |
| 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