Mark Grabarczyk, M.D.
NPI 1134168941 · Cardiovascular Disease Physician · Greenville, SC
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Grabarczyk, M.D. is a Cardiovascular Disease Physician provider in Greenville, SC (NPI 1134168941).
Provider details
- NPI number
- 1134168941
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 28576 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,735 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,088 | $119 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 461 | $8 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 430 | $13 |
| Anticoagulant Management of Patient Taking Warfarin93793 | 298 | $11 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 281 | $74 |
| Blood Test, Clotting Time85610 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 473 | 168 |
| Atorvastatin Calcium | 404 | 121 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 392 | 133 |
| Apixabanbrand: Eliquis | 370 | 95 |
| Rosuvastatin Calcium | 285 | 99 |
| Carvedilol | 282 | 83 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$957 across 37 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-06
- Last updated
- 2025-05-08
- Certified
- 2025-05-08
Frequently asked questions
- What is Mark Grabarczyk's NPI number?
- Mark Grabarczyk's National Provider Identifier (NPI) is 1134168941, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Grabarczyk's specialty?
- Mark Grabarczyk is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Grabarczyk located?
- Mark Grabarczyk's practice location on file with NPPES is 2 Innovation Dr, Greenville, SC 29607-5261.
- What is Mark Grabarczyk's phone number?
- The practice phone number listed in the NPPES registry for Mark Grabarczyk is (864) 235-7665.
- Does Mark Grabarczyk accept Medicare?
- Mark Grabarczyk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Grabarczyk's NPI active?
- Yes — Mark Grabarczyk's NPI (1134168941) is active in the NPPES registry as of the last update on 2025-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.