Stephen Mark Chrzanowski, PHD
Neurology Physician · Worcester, MA
Stephen Mark Chrzanowski, PHD is a neurology physician with a practice address in Worcester, Massachusetts, and NPI 1427552835, issued on Mar 20, 2018. Check the license (Massachusetts 291047, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Stephen Mark Chrzanowski
- Credential
- PHD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 291047 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Lake Ave N, Worcester, MA 01655
- Phone
- (774) 441-7615
- Enumerated
- Mar 20, 2018
- Record last updated
- Jun 3, 2024
- Fax
- (508) 856-4287
- Medicare enrollment
- Enrolled (PECOS I20240710001019); accepts Medicare assignment
- Medical or professional school
- University Of Florida College Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 964 in Massachusetts → Look up another NPI →
Also registered at 55 Lake Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mary-Alice Abbott, MDClinical Genetics (M.D.) Physician1982799417
Verify Stephen Mark Chrzanowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 291047Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average neurology physician in 2024
175 Medicare Part D claims for 26 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Prednisone47 claims
- Mycophenolate Mofetil25 claims
- Pyridostigmine Bromide16 claims
- Glycopyrrolate12 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.
Industry payments in 2024: $61.93
1 payment: food and beverage; the largest payer was NS Pharma, Inc. The 10,858 providers of this specialty with any payment received $8,318.07 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 one group practice
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Mark Chrzanowski among 964 neurology physician records in Massachusetts
Stephen Mark Chrzanowski, PHD is one of 964 neurology physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 85% of them.
- NPI issued2018 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2018 · median 2006 among the 612 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Massachusetts
There are 964 neurology physician records in Massachusetts.
All 964 in Massachusetts → Every provider in Worcester → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Seema Adhami, M.D.Worcester, MA 016551639169063
- Isabelita Bella, MDWorcester, MA 016551871577924
- Sheldon Benjamin, M.D.Worcester, MA 016551952375248
- David Chad, MDWorcester, MA 016551477537520
- Nancy Fontneau, MDWorcester, MA 016551073597993
- Edward Ginns, M.D. PHD.Worcester, MA 016551588646905
- Wiley Hall, M.D.Worcester, MA 016551275516296
- Lawrence Hayward, M.D.Worcester, MA 016551104807767
Common questions
What is Stephen Mark Chrzanowski, PHD's NPI number?
Stephen Mark Chrzanowski, PHD's National Provider Identifier (NPI) is 1427552835, issued on Mar 20, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Mark Chrzanowski, PHD located?
The NPPES record lists a practice address at 55 Lake Ave N, Worcester, MA, 01655. Phone: (774) 441-7615. Providers update this record themselves, so call before visiting.
How can I verify Stephen Mark Chrzanowski, PHD's license?
NPPES lists Massachusetts license number 291047, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephen Mark Chrzanowski, PHD prescribe under Medicare Part D?
In 2024, Stephen Mark Chrzanowski, PHD had 175 Medicare Part D claims for 26 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
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.