Quick answers
- Does Susan M. Ludwig accept Medicare assignment?
- Yes. Medicare's clinician data says Susan M. Ludwig 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 Susan M. Ludwig see?
- In 2024, CMS data shows 42 Original Medicare patients and 134 services for Susan M. Ludwig. This counts Original Medicare only and measures volume, not quality.
- What is Susan M. Ludwig's NPI number?
- 1679873145. 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 Susan M. Ludwig, 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 | 42 |
|---|---|
| Services billed to Medicare | 134 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 66 |
Most frequent services
- Testing for presence of drug, by chemistry analyzers (80307)37 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)36 services
- Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms (G0482)22 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)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).
- Anxiety75%
- High blood pressure62%
- High cholesterol60%
- Depression55%
- Alzheimer's disease or dementia45%
- Arthritis43%
Hospitals where Susan M. Ludwig works
Medicare's Facility Affiliation Data lists Susan M. Ludwig 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.
- Melrosewakefield HealthcareMelrose, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220070
Practice locations
Addresses where Susan M. Ludwig is enrolled with Medicare (CMS data updated October 2, 2026).
- 170 Governors AveMedford, MA 02155 (781) 306‑6000
Group practices
Medicare enrollment lists Susan M. Ludwig as a member of this group (CMS data updated October 2, 2026).
- Massachusetts Acute Care Specialists PC43 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Medford
Clinicians with the same Medicare primary specialty in Medford, MA — not a recommendation.
Other clinicians in Massachusetts Acute Care Specialists PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| School | University Of Massachusetts Medical School |
| Graduation year | 2010 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1679873145 |
| 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