Mary C. Massa, MD
Dermatology Physician · Westmont, IL
Mary C. Massa, MD is a dermatology physician with a practice address in Westmont, Illinois, and NPI 1336159839, issued on Aug 8, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mary C. Massa
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- Practice location
- 6319 Fairview Ave, Westmont, IL 60559
- Phone
- (630) 968-4500
- Enumerated
- Aug 8, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (630) 968-4420
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 647 in Illinois → Look up another NPI →
Verify Mary C. Massa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average dermatology physician in 2024
15 Medicare Part D claims, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.
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: $116.42
5 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,250 providers of this specialty with any payment received $8,544.61 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.
Mary C. Massa among 647 dermatology physician records in Illinois
Mary C. Massa, MD is one of 647 dermatology physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 65% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2007 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in Illinois
There are 647 dermatology physician records in Illinois.
All 647 in Illinois → Every provider in Westmont → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Valerie Laniosz, M.D., PHDDarien, IL 605611699064824
- Joshua Podjasek, M.D.Darien, IL 605611245496850
- Elizabeth Zanone, PADarien, IL 605611982172599
- Ahmad Amin, M.D.Naperville, IL 605631609037357
- Moira Ariano, M.D.Naperville, IL 605631396740981
- Shraddha Desai, M.D.Naperville, IL 605631831498401
- Andrew Johnson, M.D.Naperville, IL 605631619310232
- Colleen Keegan, D.O.Naperville, IL 605631497937106
Common questions
What is Mary C. Massa, MD's NPI number?
Mary C. Massa, MD's National Provider Identifier (NPI) is 1336159839, issued on Aug 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary C. Massa, MD located?
The NPPES record lists a practice address at 6319 Fairview Ave, Westmont, IL, 60559. Phone: (630) 968-4500. Providers update this record themselves, so call before visiting.
How can I verify Mary C. Massa, MD's license?
Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary C. Massa, MD prescribe under Medicare Part D?
In 2024, Mary C. Massa, MD had 15 Medicare Part D claims; the average among dermatology physician prescribers was 797. 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.