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Dr. Robert A. Wiznia, MD
NPI1811957640
- Medicare services, 2024
- 711
- Medicare patients, 2024
- 73
- Part D claims, 2024
- 346
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 130 Division St, Derby, CT 06418
- Practice phone
- Call (203) 732-7500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Robert A. Wiznia is an ophthalmologist in Derby, Connecticut
Dr. Wiznia practices at Griffin Hospital in Derby, Connecticut, part of Griffin Hospital.
Dr. Wiznia's NPI, 1811957640, was assigned on March 24, 2006. Dr. Wiznia graduated from New York University Grossman School of Medicine in 1969. Dr. Wiznia holds Connecticut license 015545.
NPI and contact details
- NPI
- 1811957640NPI Registry (opens in a new tab)
- NPI enumeration date
- March 24, 2006
- NPI status
- Active
- Practice phone
- (203) 732-7500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 83
- Medical school graduation
- 1969
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Robert A. Wiznia practices at 2 locations in Derby, Connecticut
Dr. Wiznia's primary practice is Griffin Hospital, at 130 Division St, Derby, CT 06418 in New Haven County. The practice phone is (203) 732-7500. Dr. Wiznia also practices at Griffin Hospital, 144 Division St, Derby, CT 06418.
- Griffin HospitalPrimary130 Division St, Derby, CT 06418 · New Haven CountyPhone(203) 732-7500
- Griffin Hospital144 Division St, Derby, CT 06418 · Naugatuck Vly CountyPhone(203) 732-7360
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Robert A. Wiznia is affiliated with 1 site of care
Dr. Wiznia's primary practice is Griffin Hospital in Derby, Connecticut, part of Griffin Hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Robert A. Wiznia's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wiznia practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Griffin Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Robert A. Wiznia is one of 259 ophthalmologists in Connecticut
Ophthalmology is Dr. Wiznia's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Wiznia is licensed in Connecticut.
Specialties and state licenses
- Ophthalmology, ConnecticutPrimary
Ophthalmologists near Dr. Wiznia
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
Dr. Robert A. Wiznia billed Medicare for 711 services in 2024
CMS data shows 711 Medicare services from Dr. Wiznia across 7 procedure codes in 2024, for 73 Medicare patients. Medicare paid $187,638 for them. Every service was in an office.
Medicare services, 2024711
Medicare patients73
Paid by Medicare$187,638
Procedure codes7
Dr. Wiznia's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 2742024: 24212%
- Tests and treatments
- 2023: 3112024: 24123%
- Surgery
- 2023: 1392024: 1306%
- Office and hospital visits
- 2023: 1592024: 9838%
Dr. Wiznia compared with the Connecticut median for ophthalmologists, 2024
- Dr. Wiznia
- Connecticut median
- Medicare services
- 711vs 1,15038% below
- Medicare patients
- 73vs 47285% below
- Part D claims
- 277vs 66458% below
Medians across 287 ophthalmologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Wiznia's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Wiznia?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Wiznia and other ophthalmologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert A. Wiznia treated 73 Medicare patients in 2024, average age 78
CMS counts 73 Medicare patients who saw Dr. Wiznia in 2024. The largest group is 85 and over, with 25 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 29% are also on Medicaid. Their average risk score is 1.65, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Wiznia's median patient age at 71, with 49% women.
Medicare patients, 202473
Average age78
Average risk score1.65
Also on Medicaid29%
Dr. Wiznia's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Wiznia's Medicare patients by sex, 2024
- Women4359%
- Men3041%
Chronic conditions among Dr. Wiznia's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes58%
- Arthritis40%
- Chronic kidney disease33%
- Ischemic heart disease29%
- Anxiety25%
- Heart failure25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Wiznia's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women49%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Robert A. Wiznia wrote 346 Medicare Part D claims in 2024
In 2024, Dr. Wiznia wrote 346 Medicare Part D claims for 64 patients. 73% of them were for generic drugs. CMS names the drug for 277 of them, across 8 drugs with 11 or more claims each, at $7,648 in total drug cost. In 2023, CMS named 301 claims across 10 drugs.
Part D claims, 2024346
Drugs named by CMS8
Total drug cost$7,648
Part D patients64
Dr. Wiznia's Part D claims by kind of drug, 2024
- Generic254 claims73%
- Brand-name92 claims27%
Dr. Wiznia'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3012024: 2778%
Drugs named by CMS: 8 in 2024, 10 in 2023.
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
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Dr. Robert A. Wiznia has 1 publication on record
Dmand AI links 1 paper to Dr. Wiznia. Dr. Wiznia's most frequent co-author is Sushma K. Vance, MD.
Papers1
Dr. Wiznia's most frequent co-authors
Recent publications by Dr. Wiznia
See who Dr. Wiznia researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Wiznia works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Robert A. Wiznia received $439 in industry payments from 2017 to 2019
CMS Open Payments shows 4 general payments to Dr. Wiznia from 4 drug and device companies from 2017 to 2019. Food and beverage make up the largest share, 100% of the total. Carl Zeiss Meditec, Inc. paid the most, $137.
General payments to Dr. Wiznia by program year, 2017 to 2019
Companies that paid Dr. Wiznia the most, 2017 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert A. Wiznia graduated from New York University Grossman School of Medicine
Dr. Wiznia graduated from New York University Grossman School of Medicine in 1969.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert A. Wiznia'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 Dr. Robert A. Wiznia
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Robert A. Wiznia's NPI number?
Dr. Robert A. Wiznia's NPI number is 1811957640. It was assigned on March 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert A. Wiznia?
Dr. Robert A. Wiznia is an ophthalmologist in Derby, Connecticut. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Robert A. Wiznia practice?
Dr. Wiznia practices at 130 Division St, Derby, CT 06418. Dr. Wiznia also practices at 144 Division St, Derby, CT 06418. Dr. Wiznia's primary practice is Griffin Hospital in Derby, Connecticut, part of Griffin Hospital.
What is Dr. Robert A. Wiznia's office phone number?
The practice phone on file for Dr. Wiznia is (203) 732-7500.
What is Dr. Robert A. Wiznia's medical license number?
Dr. Wiznia holds Connecticut license 015545.
Which hospitals is Dr. Robert A. Wiznia affiliated with?
Dr. Wiznia practices at Griffin Hospital in Derby, Connecticut.
Does Dr. Robert A. Wiznia accept Medicare?
Yes. CMS data shows Dr. Wiznia billed Medicare for 711 services in 2024.
How many Medicare patients does Dr. Robert A. Wiznia see?
CMS counts 73 Medicare patients who saw Dr. Wiznia in 2024, with an average age of 78.
What services does Dr. Robert A. Wiznia bill to Medicare?
In 2024, Dr. Wiznia's most billed Medicare services were injected or infused drug (J0178), eye exam or test (92134) and surgery: eye (67028).
Where did Dr. Robert A. Wiznia go to medical school?
Dr. Wiznia graduated from New York University Grossman School of Medicine in 1969.
Show 5 more questionsShow fewer questions
What drugs does Dr. Robert A. Wiznia prescribe most?
In 2024 Medicare Part D data, Dr. Wiznia's most prescribed drugs by claims were Latanoprost, Timolol Maleate and Ketorolac Tromethamine.
Has Dr. Robert A. Wiznia received payments from drug or device companies?
CMS Open Payments shows $439 in general payments to Dr. Wiznia from 4 companies from 2017 to 2019. The largest total came from Carl Zeiss Meditec, Inc.
How long has Dr. Robert A. Wiznia been practicing?
Dr. Wiznia graduated from medical school in 1969, 57 years ago.
Does Dr. Robert A. Wiznia do research?
Dmand AI links 1 publication to Dr. Wiznia.
Who does Dr. Robert A. Wiznia publish with?
Dr. Wiznia's most frequent co-authors are Sushma K. Vance, MD (1 shared paper).
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