Jan Ryszkowski, M.D.
Nuclear Medicine Physician · Little Rock, AR
Jan Ryszkowski, M.D. is a nuclear medicine physician with a practice address in Little Rock, Arkansas, and NPI 1134304512, issued on Jan 4, 2008. Check the license (Arkansas E-5892, as entered in NPPES) on the Arkansas State Medical Board; the Medicare figures below come from public CMS files.
- Name
- Jan Ryszkowski
- Credential
- M.D.
- Primary taxonomy
- Nuclear Medicine Physician 207U00000X
- License numbers
- E-5892 AR
4301091356 MI
Self-reported in NPPES; status is on the state search - Practice location
- 316 Commentry Way, Little Rock, AR 72223
- Phone
- (501) 352-7043
- Enumerated
- Jan 4, 2008
- Record last updated
- Sep 19, 2025
- Medicaid ID
- 174688001 AR
- Medicare enrollment
- Enrolled (PECOS I20081211000058); accepts Medicare assignment
- Entity
- Type 1 · individual
3 nearest nuclear medicine physician records → All 4 in Arkansas → Look up another NPI →
Verify Jan Ryszkowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArkansas State Medical Board
Search for license E-5892Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% more Medicare Part D claims than the average nuclear medicine physician in 2024
562 Medicare Part D claims for 198 beneficiaries, against an average of 285 among the 75 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Doxycycline Hyclate142 claims
- Levofloxacin44 claims
- Pentoxifylline41 claims
- Sulfamethoxazole-Trimethoprim40 claims
- Clindamycin Hcl39 claims
- Cephalexin32 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 90.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $640.36
23 payments; by number, the most common kind was food and beverage; the largest payer was Paratek Pharmaceuticals, Inc. The 172 providers of this specialty with any payment received $4,384.46 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- ArcareJacksonville, AR
- Healogics Specialty Physicians OF Arkansas, PLLCFayetteville, AR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nuclear Medicine Physician providers in Arkansas
There are 4 nuclear medicine physician records in Arkansas.
All 4 in Arkansas → Every provider in Little Rock → Nuclear Medicine Physician nationwide →
The 3 nuclear medicine physician records with the nearest ZIP codes
- Tracy Yarbrough, MD PHDLittle Rock, AR 722231275670358
- Samuel Bezold, D.O.Little Rock, AR 722051194068676
- Rylen Stratford, DOLittle Rock, AR 722051598349946
Common questions
What is Jan Ryszkowski, M.D.'s NPI number?
Jan Ryszkowski, M.D.'s National Provider Identifier (NPI) is 1134304512, issued on Jan 4, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Jan Ryszkowski, M.D. located?
The NPPES record lists a practice address at 316 Commentry Way, Little Rock, AR, 72223. Phone: (501) 352-7043. Providers update this record themselves, so call before visiting.
How can I verify Jan Ryszkowski, M.D.'s license?
NPPES lists Arkansas license number E-5892, as entered by the provider. Search the Arkansas State Medical Board at https://armedicalboard.adh.arkansas.gov/public/verify/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jan Ryszkowski, M.D. prescribe under Medicare Part D?
In 2024, Jan Ryszkowski, M.D. had 562 Medicare Part D claims for 198 beneficiaries; the average among nuclear medicine physician prescribers was 285. Part D covers Medicare prescriptions only.
What is Jan Ryszkowski, M.D.'s MIPS final score?
The 2023 MIPS final score is 90.4 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.