Quick answers
- Does Andrew W. Messenger accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew W. Messenger 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 Andrew W. Messenger see?
- In 2024, CMS data shows 761 Original Medicare patients and 4,728 services for Andrew W. Messenger. This counts Original Medicare only and measures volume, not quality.
- What is Andrew W. Messenger's NPI number?
- 1073543666. 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 Andrew W. Messenger, 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 | 761 |
|---|---|
| Services billed to Medicare | 4,728 |
| Different services or procedures | 125 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, methylprednisolone acetate, 1 mg (J1010)1,640 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)657 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)619 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)344 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)120 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 pressure69%
- High cholesterol68%
- Arthritis44%
- Diabetes28%
- Depression24%
- Ischemic heart disease23%
Hospitals where Andrew W. Messenger works
Medicare's Facility Affiliation Data lists Andrew W. Messenger 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.
- Edward W Sparrow HospitalLansing, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230230
- McLaren Greater LansingLansing, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230167
- MyMichigan Medical Center MidlandMidland, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 230222
- University of Michigan Health- Sparrow ClintonSaint Johns, MI · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 231326
- University of Michigan Health-Sparrow CarsonCarson City, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230208
Practice locations
Addresses where Andrew W. Messenger is enrolled with Medicare (CMS data updated October 2, 2026).
- 1005 S US Hwy 27, Suite 100Saint Johns, MI 48879 (989) 224‑3000
- 1005 S US Hwy 27, Suite 200Saint Johns, MI 48879 (989) 224‑6897
- 1505 Waterford Pkwy, Clinton County Medical Center PsychSaint Johns, MI 48879 (989) 292‑3572
- 724 E Superior StAlma, MI 48801 (989) 796‑4555
Group practices
Medicare enrollment lists Andrew W. Messenger as a member of these groups (CMS data updated October 2, 2026).
- Clinton County Medical Center PC25 clinicians in the group
- Clinton County Medical Center Psychological Services PLLC16 clinicians in the group
- Outpatient Urgent Care Healthcenter11 clinicians in the group
Specialties
- Family Practiceprimary
- General Practicealso
Other family doctors in Saint Johns
Clinicians with the same Medicare primary specialty in Saint Johns, MI — not a recommendation.
Other clinicians in Clinton County Medical Center PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Michigan State University College Of Osteopathic Medicine |
| Graduation year | 1977 (49 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1073543666 |
| 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