Erik Mark Massenzio, BA
- Part D claims, 2024
- 460
- Hospital affiliations
- 2
- Industry payments
- $4,670
- Medical groups
- 2
- State license
- 1
- Practice address
- 840 Walnut Street, Philadelphia, PA 19107
- Practice phone
- Call (215) 440-3150
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Erik Massenzio's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Erik Mark Massenzio is an ophthalmologist in Philadelphia, Pennsylvania
Erik Massenzio practices at Wills Eye Hospital in Philadelphia, Pennsylvania, part of City Trusts.
Erik Massenzio's NPI, 1093394769, was assigned on April 7, 2021. Erik Massenzio graduated from Jefferson Medical College of Thomas Jefferson University in 2021. Erik Massenzio holds Pennsylvania license MD489432.
- NPI
- 1093394769NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789093048
- NPI enumeration date
- April 7, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (215) 440-3150
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Erik Mark Massenzio practices at Wills Eye Hospital in Philadelphia, Pennsylvania
Erik Massenzio's primary practice is Wills Eye Hospital, at 840 Walnut Street, Philadelphia, PA 19107 in Philadelphia County. The practice phone is (215) 440-3150.
- Wills Eye Hospital840 Walnut Street, Philadelphia, PA 19107 · Philadelphia CountyPhone(215) 440-3150
Source: Dmand AI Affiliation Data
Erik Mark Massenzio is affiliated with 2 sites of care and 2 medical groups
Erik Massenzio's primary practice is Wills Eye Hospital in Philadelphia, Pennsylvania, part of City Trusts. Erik Massenzio is also affiliated with Thomas Jefferson University Hospital. Dmand AI also links Erik Massenzio to 2 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Erik Mark Massenzio's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Erik Massenzio practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Wills Eye Hospital | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across City Trusts and 6.2K+ hospitals, with verified contacts in the same login.
Erik Mark Massenzio is one of 843 ophthalmologists in Pennsylvania
Ophthalmology is Erik Massenzio's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Erik Massenzio is licensed in Pennsylvania.
Specialties and state licenses
- Ophthalmology, PennsylvaniaPrimary
Ophthalmologists near Erik Massenzio
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Erik Mark Massenzio's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Erik Massenzio's median patient age at 65, with 45% women.
Erik Massenzio's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women45%
- Men54%
Source: Dmand AI Patient Panel Data
Erik Mark Massenzio wrote 460 Medicare Part D claims in 2024
In 2024, Erik Massenzio wrote 460 Medicare Part D claims for 174 patients. 68% of them were for generic drugs. CMS names the drug for 356 of them, across 10 drugs with 11 or more claims each, at $13,748 in total drug cost.
Erik Massenzio's Part D claims by kind of drug, 2024
- Generic314 claims68%
- Brand-name146 claims32%
Erik Massenzio's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Erik Massenzio's Part D claims, 2024
- Antibiotics3%12 of 460 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Erik Mark Massenzio takes part in Medicare
Erik Massenzio accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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Erik Mark Massenzio received $4,670 in industry payments from 2024 to 2025
CMS Open Payments shows 49 general payments to Erik Massenzio from 15 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 73% of the total. Bausch & Lomb Americas Inc. paid the most, $1,939.
General payments to Erik Massenzio by program year, 2024 to 2025
General payments to Erik Massenzio by kind, 2024 to 2025
- Food and beverage$3,41873%
- Travel and lodging$1,25227%
Companies that paid Erik Massenzio the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Erik Mark Massenzio graduated from Jefferson Medical College of Thomas Jefferson University
Erik Massenzio graduated from Jefferson Medical College of Thomas Jefferson University in 2021.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Erik Mark Massenzio's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Erik Mark Massenzio
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Erik Mark Massenzio's NPI number?
Erik Mark Massenzio's NPI number is 1093394769. It was assigned on April 7, 2021, and it is active in the NPI Registry.
What does Erik Mark Massenzio specialize in?
Erik Mark Massenzio is an ophthalmologist in Philadelphia, Pennsylvania. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Erik Mark Massenzio practice?
Erik Massenzio practices at 840 Walnut Street, Philadelphia, PA 19107. Erik Massenzio's primary practice is Wills Eye Hospital in Philadelphia, Pennsylvania, part of City Trusts. Dmand AI also links Erik Massenzio to 2 medical groups.
What is Erik Mark Massenzio's office phone number?
The practice phone on file for Erik Massenzio is (215) 440-3150.
What is Erik Mark Massenzio's medical license number?
Erik Massenzio holds Pennsylvania license MD489432, one of 2 state licenses on file.
Which hospitals is Erik Mark Massenzio affiliated with?
Erik Massenzio practices at Wills Eye Hospital in Philadelphia, Pennsylvania. Erik Massenzio is also affiliated with Thomas Jefferson University Hospital.
Does Erik Mark Massenzio accept Medicare?
Yes. CMS lists Erik Massenzio as accepting Medicare assignment.
Where did Erik Mark Massenzio go to medical school?
Erik Massenzio graduated from Jefferson Medical College of Thomas Jefferson University in 2021.
What drugs does Erik Mark Massenzio prescribe most?
In 2024 Medicare Part D data, Erik Massenzio's most prescribed drugs by claims were Erythromycin, Prednisolone Acetate and Dorzolamide-Timolol.
Has Erik Mark Massenzio received payments from drug or device companies?
CMS Open Payments shows $4,670 in general payments to Erik Massenzio from 15 companies from 2024 to 2025. The largest total came from Bausch & Lomb Americas Inc.
How long has Erik Mark Massenzio been practicing?
Erik Massenzio graduated from medical school in 2021, 5 years ago.
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