Jan Ryszkowski, M.D.
NPI 1134304512 · Nuclear Medicine Physician · Little Rock, AR
Enrolled with Medicare as Practitioner - Nuclear Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jan Ryszkowski, M.D. is a Nuclear Medicine Physician provider in Little Rock, AR (NPI 1134304512).
Provider details
- NPI number
- 1134304512
- Entity type
- Individual
- Primary specialty
- Nuclear Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301091356 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
- General Practice Physician208D00000X
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 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
2,762 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) |
|---|---|---|
| Removal of Skin and Tissue, 20.0 Sq Cm Or Less11042 | 1,106 | $54 |
| 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 | 446 | $15 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 425 | $60 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 374 | $86 |
| Removal of Skin and Tissue, Each Additional 20.0 Sq Cm Or Less11045 | 231 | $22 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Hyclate | 142 | 94 |
| Levofloxacin | 44 | 26 |
| Pentoxifylline | 41 | 14 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 40 | 28 |
| Clindamycin Hcl | 39 | 34 |
| Cephalexin | 32 | 26 |
| Collagenase Clostridium Hist.brand: Santyl | 28 | 19 |
| Minocycline Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$640 across 23 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
- 2008-01-04
- Last updated
- 2025-09-19
- Certified
- 2025-09-19
Frequently asked questions
- What is Jan Ryszkowski's NPI number?
- Jan Ryszkowski's National Provider Identifier (NPI) is 1134304512, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jan Ryszkowski's specialty?
- Jan Ryszkowski is listed in the NPPES registry with a primary specialty of Nuclear Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jan Ryszkowski located?
- Jan Ryszkowski's practice location on file with NPPES is 316 Commentry Way, Little Rock, AR 72223-4598.
- What is Jan Ryszkowski's phone number?
- The practice phone number listed in the NPPES registry for Jan Ryszkowski is (501) 352-7043.
- Does Jan Ryszkowski accept Medicare?
- Jan Ryszkowski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jan Ryszkowski's NPI active?
- Yes — Jan Ryszkowski's NPI (1134304512) is active in the NPPES registry as of the last update on 2025-09-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.