John Emil Zawidniak, M.D.
Rheumatology Physician · New Britain, CT
John Emil Zawidniak, M.D. is a rheumatology physician with a practice address in New Britain, Connecticut, and NPI 1932544749, issued on May 7, 2013. Check the license (Connecticut 57290, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John Emil Zawidniak
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 57290 CT
Self-reported in NPPES; status is on the state search - Practice location
- 183 N Mountain RD Ste 207, New Britain, CT 06053
- Phone
- (860) 524-2610
- Enumerated
- May 7, 2013
- Record last updated
- May 28, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (860) 524-2615
- Medicare enrollment
- Enrolled (PECOS I20180717000383); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 145 in Connecticut → Look up another NPI →
Also registered at 183 N Mountain RD Ste 207
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelly Smyth, PA-CSurgical Physician Assistant1730634791
Verify John Emil Zawidniak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 57290Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% more Medicare Part D claims than the average rheumatology physician in 2024
3,108 Medicare Part D claims for 561 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone1,024 claims
- Methylprednisolone301 claims
- Methotrexate285 claims
- Allopurinol202 claims
- Hydroxychloroquine Sulfate184 claims
- Humira(Cf) Pen130 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 practice group's MIPS final score for 2023 (Medicare payment program): 84.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Hartford Healthcare Medical Group Specialists PLLCNew Britain, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Emil Zawidniak among 145 rheumatology physician records in Connecticut
John Emil Zawidniak, M.D. is one of 145 rheumatology physician records with a practice address in Connecticut. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 76% of them.
- NPI issued2013 · 76% of these records are older, 22% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2013 · median 2004 among the 94 with a school on file
- Record last updated2019 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Connecticut
There are 145 rheumatology physician records in Connecticut.
All 145 in Connecticut → Every provider in New Britain → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Edward Feinglass, M.D.New Britain, CT 060511871595157
- Melanie GraberNew Britain, CT 060501740714047
- Paul Gibilisco, MDNorfolk, CT 060581013040401
- Barbara Kage, MDManchester, CT 060401427043538
- Sandra Apenteng, MDGlastonbury, CT 060331801359138
- Christopher Scola, M.D.Glastonbury, CT 060331386625432
- Ioana Stanescu, MDGlastonbury, CT 060331780625418
- Ralph Stocker, M.D.Glastonbury, CT 060331053410712
Common questions
What is John Emil Zawidniak, M.D.'s NPI number?
John Emil Zawidniak, M.D.'s National Provider Identifier (NPI) is 1932544749, issued on May 7, 2013. An NPI identifies a provider in billing; it is not a license.
Where is John Emil Zawidniak, M.D. located?
The NPPES record lists a practice address at 183 N Mountain RD Ste 207, New Britain, CT, 06053. Phone: (860) 524-2610. Providers update this record themselves, so call before visiting.
How can I verify John Emil Zawidniak, M.D.'s license?
NPPES lists Connecticut license number 57290, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Emil Zawidniak, M.D. prescribe under Medicare Part D?
In 2024, John Emil Zawidniak, M.D. had 3,108 Medicare Part D claims for 561 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is John Emil Zawidniak, M.D.'s MIPS final score?
The 2023 MIPS final score is 84.5 of 100, reported for the practice group. 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.