Quick answers
- Does Timothy J. Wymer accept Medicare assignment?
- Yes. Medicare's clinician data says Timothy J. Wymer 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 Timothy J. Wymer see?
- In 2024, CMS data shows 1,714 Original Medicare patients and 3,039 services for Timothy J. Wymer. This counts Original Medicare only and measures volume, not quality.
- What is Timothy J. Wymer's NPI number?
- 1376937268. 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 Timothy J. Wymer, 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 | 1,714 |
|---|---|
| Services billed to Medicare | 3,039 |
| Different services or procedures | 56 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)832 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)574 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)245 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)241 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)217 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 pressure75%
- High cholesterol75%
- Ischemic heart disease52%
- Chronic kidney disease48%
- Arthritis47%
- Heart failure46%
Hospitals where Timothy J. Wymer works
Medicare's Facility Affiliation Data lists Timothy J. Wymer 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.
- Lowell General HospitalLowell, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220063
- Tufts Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220116
Practice locations
Addresses where Timothy J. Wymer is enrolled with Medicare (CMS data updated October 2, 2026).
- 14 Research Pl, Suite 3North Chelmsford, MA 01863 (978) 256‑6607
- 295 Varnum AveLowell, MA 01854
Group practices
Medicare enrollment lists Timothy J. Wymer as a member of this group (CMS data updated October 2, 2026).
- LGH Merrimack Valley Cardiology Associates, LLC22 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in North Chelmsford
Clinicians with the same Medicare primary specialty in North Chelmsford, MA — not a recommendation.
Other clinicians in LGH Merrimack Valley Cardiology Associates, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Maryland School Of Medicine |
| Graduation year | 2015 (11 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1376937268 |
| 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