Quick answers
- Does Mark L. Niemiera accept Medicare assignment?
- Medicare's clinician data says Mark L. Niemiera may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Mark L. Niemiera see?
- In 2024, CMS data shows 901 Original Medicare patients and 2,192 services for Mark L. Niemiera. This counts Original Medicare only and measures volume, not quality.
- What is Mark L. Niemiera's NPI number?
- 1780788109. 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 Mark L. Niemiera, 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 | 901 |
|---|---|
| Services billed to Medicare | 2,192 |
| Different services or procedures | 35 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)767 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)542 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)295 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)174 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)73 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%
- Arthritis57%
- Diabetes47%
- Ischemic heart disease46%
- Heart failure38%
Hospitals where Mark L. Niemiera works
Medicare's Facility Affiliation Data lists Mark L. Niemiera 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.
- Bayshore Medical CenterHolmdel, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310112
- JFK University Medical CenterEdison, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 310108
- Raritan Bay Medical CenterPerth Amboy, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310039
- Southern Ocean Medical CenterManahawkin, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310113
Practice locations
Addresses where Mark L. Niemiera is enrolled with Medicare (CMS data updated October 2, 2026).
- 26 Throckmorton LnOld Bridge, NJ 08857 (732) 679‑9950
- 530 New Brunswick AvePerth Amboy, NJ 08861 (732) 324‑5146
- 613 Amboy AvePerth Amboy, NJ 08861 (732) 442‑1441
- 613 Amboy Ave, Suite 104Perth Amboy, NJ 08861 (732) 442‑1441
Group practices
Medicare enrollment lists Mark L. Niemiera as a member of these groups (CMS data updated October 2, 2026).
- Hackensack Meridian Health Medical Group - Primary Care PC358 clinicians in the group
- RB Cardiology Reading Associates LLC7 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in New Jersey →
Other cardiologists in Old Bridge
Clinicians with the same Medicare primary specialty in Old Bridge, NJ — not a recommendation.
Other clinicians in Hackensack Meridian Health Medical Group - Primary Care PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Hahnemann University College Of Medicine |
| Graduation year | 1986 (40 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1780788109 |
| 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