Mary Massa, MD
NPI 1336159839 · Dermatology Physician · Westmont, IL
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Massa, MD is a Dermatology Physician provider in Westmont, IL (NPI 1336159839).
Provider details
- NPI number
- 1336159839
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$116 across 5 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
- 2006-08-08
- Last updated
- 2007-07-09
Frequently asked questions
- What is Mary Massa's NPI number?
- Mary Massa's National Provider Identifier (NPI) is 1336159839, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Massa's specialty?
- Mary Massa is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Massa located?
- Mary Massa's practice location on file with NPPES is 6319 Fairview Ave, Westmont, IL 60559-2888.
- What is Mary Massa's phone number?
- The practice phone number listed in the NPPES registry for Mary Massa is (630) 968-4500.
- Does Mary Massa accept Medicare?
- Mary Massa is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Massa's NPI active?
- Yes — Mary Massa's NPI (1336159839) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.