Quick answers
- Does Sheffey N. Massey Iii accept Medicare assignment?
- Yes. Medicare's clinician data says Sheffey N. Massey Iii 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 Sheffey N. Massey Iii see?
- In 2024, CMS data shows 176 Original Medicare patients and 205 services for Sheffey N. Massey Iii. This counts Original Medicare only and measures volume, not quality.
- What is Sheffey N. Massey Iii's NPI number?
- 1609834365. 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 Sheffey N. Massey Iii, 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 | 176 |
|---|---|
| Services billed to Medicare | 205 |
| Different services or procedures | 32 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Emergency department visit with moderate level of medical decision making (99284)61 services
- Emergency department visit with high level of medical decision making (99285)51 services
- Emergency department visit with low level of medical decision making (99283)30 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)17 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 pressure70%
- High cholesterol64%
- Arthritis41%
- Anxiety38%
- Depression36%
- Chronic kidney disease35%
Hospitals where Sheffey N. Massey Iii works
Medicare's Facility Affiliation Data lists Sheffey N. Massey Iii 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.
- Gov Juan F Luis Hospital & Medical CenterSt Croix, VI · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 480002
- Hudson HospitalHudson, WI · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 521335
- Lakeview Memorial HospitalStillwater, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240066
- Regions HospitalSaint Paul, MN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 240106
Practice locations
Addresses where Sheffey N. Massey Iii is enrolled with Medicare (CMS data updated October 2, 2026).
- 15350 English AveApple Valley, MN 55124 (952) 431‑8500
- 205 Wabasha Ave SSaint Paul, MN 55107
- 2500 Como AveSaint Paul, MN 55108
- 3930 Northwood DrArden Hills, MN 55112
- 8600 Nicollet AveBloomington, MN 55420
Group practices
Medicare enrollment lists Sheffey N. Massey Iii as a member of this group (CMS data updated October 2, 2026).
- Group Health Inc1,638 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Apple Valley
Clinicians with the same Medicare primary specialty in Apple Valley, MN — not a recommendation.
Other clinicians in Group Health Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Des Moines University Of Osteopathic Medicine And Health Sciences |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1609834365 |
| 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