Quick answers
- Does Marisa A. Spencer accept Medicare assignment?
- Yes. Medicare's clinician data says Marisa A. Spencer 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 Marisa A. Spencer see?
- In 2024, CMS data shows 309 Original Medicare patients and 11,548 services for Marisa A. Spencer. This counts Original Medicare only and measures volume, not quality.
- What is Marisa A. Spencer's NPI number?
- 1053637223. 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 Marisa A. Spencer, 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 | 309 |
|---|---|
| Services billed to Medicare | 11,548 |
| Different services or procedures | 62 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Injection, vedolizumab, intravenous, 1 mg (J3380)5,100 services
- Injection, infliximab, excludes biosimilar, 10 mg (J1745)2,070 services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)275 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)89 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)61 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 pressure63%
- High cholesterol59%
- Arthritis40%
- Diabetes31%
- Anxiety30%
- Depression28%
Hospitals where Marisa A. Spencer works
Medicare's Facility Affiliation Data lists Marisa A. Spencer 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.
- Allina United HospitalSaint Paul, MN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 240038
- M Health Fairview St John's HospitalMaplewood, MN · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 240210
- M Health Fairview Woodwinds HospitalWoodbury, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240213
- St Croix Regional Medical CenterSaint Croix Falls, WI · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 521337
Practice locations
Addresses where Marisa A. Spencer is enrolled with Medicare (CMS data updated October 2, 2026).
- 237 Radio Dr, Suite 210Woodbury, MN 55125 (612) 871‑1145
- 2651 Hillcrest Dr, Suite 302Hudson, WI 54016 (612) 871‑1145
Group practices
Medicare enrollment lists Marisa A. Spencer as a member of this group (CMS data updated October 2, 2026).
- Mngi Digestive Health PA277 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Woodbury
Clinicians with the same Medicare primary specialty in Woodbury, MN — not a recommendation.
Other clinicians in Mngi Digestive Health PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Virginia School Of Medicine |
| Graduation year | 2010 (16 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1053637223 |
| 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