Quick answers
- Does McKenzie L. Griffo accept Medicare assignment?
- Yes. Medicare's clinician data says McKenzie L. Griffo 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 McKenzie L. Griffo see?
- In 2024, CMS data shows 76 Original Medicare patients and 137 services for McKenzie L. Griffo. This counts Original Medicare only and measures volume, not quality.
- What is McKenzie L. Griffo's NPI number?
- 1104571413. 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 McKenzie L. Griffo, 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 | 76 |
|---|---|
| Services billed to Medicare | 137 |
| Different services or procedures | 16 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Prosthetic repair of shoulder joint, total shoulder (23472)33 services
- Release of tendon connecting biceps muscle and shoulder using an endoscope (29828)26 services
- Shaving of part of shoulder bone and repair of ligament using an endoscope (29826)24 services
- Repair of shoulder rotator cuff using an endoscope (29827)18 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%
- Arthritis75%
- High blood pressure74%
- Diabetes33%
- Depression26%
- Anxiety26%
Hospitals where McKenzie L. Griffo works
Medicare's Facility Affiliation Data lists McKenzie L. Griffo 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.
- Riverside Doctors' Hospital of WilliamsburgWilliamsburg, VA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 490143
- Riverside Regional Medical CenterNewport News, VA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 490052
Practice locations
Addresses where McKenzie L. Griffo is enrolled with Medicare (CMS data updated October 2, 2026).
- 12200 Warwick BlvdNewport News, VA 23601
- 1500 Commonwealth AveWilliamsburg, VA 23185 (757) 585‑2250
- 3700 Battery BlvdWilliamsburg, VA 23185
- 856 J Clyde Morris BlvdNewport News, VA 23601
- 856 J Clyde Morris Blvd ANewport News, VA 23601
Group practices
Medicare enrollment lists McKenzie L. Griffo as a member of this group (CMS data updated October 2, 2026).
- Riverside Physician Services Inc797 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Newport News
Clinicians with the same Medicare primary specialty in Newport News, VA — not a recommendation.
Other clinicians in Riverside Physician Services Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104571413 |
| 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