John Kaczmar, MD
NPI 1134448079 · Medical Oncology Physician · Charleston, SC
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Kaczmar, MD is a Medical Oncology Physician provider in Charleston, SC (NPI 1134448079).
Provider details
- NPI number
- 1134448079
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MT197543 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 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
911 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 368 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 217 | $89 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 181 | $134 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 47 | $170 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 25 | $125 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prochlorperazine Maleate | 89 | 48 |
| Ondansetron Hcl | 81 | 46 |
| Levothyroxine Sodium | 50 | 17 |
| Oxycodone Hcl | 42 | 23 |
| Prednisone | 40 | 17 |
| Lenvatinib Mesylatebrand: Lenvima | 23 | — |
| Gabapentin | 23 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,079 across 12 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
- 2010-05-18
- Last updated
- 2022-03-10
- Certified
- 2022-03-10
Frequently asked questions
- What is John Kaczmar's NPI number?
- John Kaczmar's National Provider Identifier (NPI) is 1134448079, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Kaczmar's specialty?
- John Kaczmar is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is John Kaczmar located?
- John Kaczmar's practice location on file with NPPES is 171 Ashley Ave, Charleston, SC 29425-8908.
- What is John Kaczmar's phone number?
- The practice phone number listed in the NPPES registry for John Kaczmar is (843) 792-1414.
- Does John Kaczmar accept Medicare?
- John Kaczmar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Kaczmar's NPI active?
- Yes — John Kaczmar's NPI (1134448079) is active in the NPPES registry as of the last update on 2022-03-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.