Dr. William Robert Maron II, MD
- Medicare services, 2024
- 558
- Medicare patients, 2024
- 239
- Part D claims, 2024
- 1,099
- Hospital affiliations
- 1
- Industry payments
- $4,750
- Practice address
- 21 Woodland St, Hartford, CT 06105
- Practice phone
- Call (860) 522-5215
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
William R. Maron MD
Hartford, Connecticut
Find Dr. Maron'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.
Dr. William Robert Maron II is an ophthalmologist in Hartford, Connecticut
Dr. Maron practices at William R. Maron MD in Hartford, Connecticut.
Dr. Maron's NPI, 1942646898, was assigned on May 20, 2013. Dr. Maron graduated from Albany Medical College of Union University in 2017. Dr. Maron holds Connecticut license 56631.
- NPI
- 1942646898NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1951673136
- NPI enumeration date
- May 20, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (860) 522-5215
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Robert Maron II practices at William R. Maron MD in Hartford, Connecticut
Dr. Maron's primary practice is William R. Maron MD, at 21 Woodland St, Hartford, CT 06105 in Capitol County. The practice phone is (860) 522-5215.
- William R. Maron MD21 Woodland St, Hartford, CT 06105 · Capitol CountyPhone(860) 522-5215
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William Robert Maron II is affiliated with 4 sites of care and 2 medical groups
Dr. Maron's primary practice is William R. Maron MD in Hartford, Connecticut. Dr. Maron is also affiliated with Hartford Hospital. The medical group on file is Hartford Hospital. Dmand AI also links Dr. Maron to 1 more physician office, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William Robert Maron II's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maron practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| William R. Maron MD | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Robert Maron II is one of 259 ophthalmologists in Connecticut
Ophthalmology is Dr. Maron's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Maron is licensed in Connecticut.
Specialties and state licenses
- Ophthalmology, ConnecticutPrimary
Ophthalmologists near Dr. Maron
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. William Robert Maron II billed Medicare for 558 services in 2024
CMS data shows 558 Medicare services from Dr. Maron across 8 procedure codes in 2024, for 239 Medicare patients. Medicare paid $36,116 for them. Every service was in an office.
Dr. Maron's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 5852024: 43825%
- Office and hospital visits
- 2023: 2152024: 12044%
Dr. Maron compared with the Connecticut median for ophthalmologists, 2024
- Dr. Maron
- Connecticut median
- Medicare services
- 558vs 1,15051% below
- Medicare patients
- 239vs 47249% below
- Part D claims
- 973vs 66447% above
Medians across 287 ophthalmologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Maron'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. Maron?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Maron and other ophthalmologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Robert Maron II treated 239 Medicare patients in 2024, average age 76
CMS counts 239 Medicare patients who saw Dr. Maron in 2024. The largest group is 65 to 74, with 86 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 36% are also on Medicaid. Their average risk score is 1.34, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Maron's median patient age at 69, with 52% women.
Dr. Maron's Medicare patients by age, 2024
Dr. Maron's Medicare patients by sex, 2024
- Women13356%
- Men10644%
Chronic conditions among Dr. Maron's Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Diabetes35%
- Arthritis34%
- Chronic kidney disease28%
- Ischemic heart disease25%
- Heart failure20%
- Mood disorders20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Maron's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Robert Maron II wrote 1,099 Medicare Part D claims in 2024
In 2024, Dr. Maron wrote 1,099 Medicare Part D claims for 301 patients. 47% of them were for generic drugs. CMS names the drug for 973 of them, across 18 drugs with 11 or more claims each, at $369,433 in total drug cost. In 2023, CMS named 1,059 claims across 22 drugs.
Dr. Maron's Part D claims by kind of drug, 2024
- Generic513 claims47%
- Brand-name586 claims53%
Dr. Maron'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: 1,0592024: 9738%
Drugs named by CMS: 18 in 2024, 22 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
How Dr. William Robert Maron II takes part in Medicare
Dr. Maron 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)
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Dr. William Robert Maron II received $4,750 in industry payments from 2017 to 2025
CMS Open Payments shows 121 general payments to Dr. Maron from 18 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 67% of the total. TissueTech, Inc. paid the most, $1,538.
General payments to Dr. Maron by program year, 2017 to 2025
General payments to Dr. Maron by kind, 2017 to 2025
- Food and beverage$3,20667%
- Travel and lodging$1,29627%
- Education$2495%
Companies that paid Dr. Maron the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Robert Maron II graduated from Albany Medical College of Union University
Dr. Maron graduated from Albany Medical College of Union University in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Robert Maron II'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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 Dr. William Robert Maron II
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. William Robert Maron II's NPI number?
Dr. William Robert Maron II's NPI number is 1942646898. It was assigned on May 20, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. William Robert Maron II?
Dr. William Robert Maron II is an ophthalmologist in Hartford, Connecticut. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. William Robert Maron II practice?
Dr. Maron practices at 21 Woodland St, Hartford, CT 06105. Dr. Maron's primary practice is William R. Maron MD in Hartford, Connecticut. Dmand AI also links Dr. Maron to 1 physician office, 1 group practice or clinic and 1 medical group.
What is Dr. William Robert Maron II's office phone number?
The practice phone on file for Dr. Maron is (860) 522-5215.
What is Dr. William Robert Maron II's medical license number?
Dr. Maron holds Connecticut license 56631.
Which hospitals is Dr. William Robert Maron II affiliated with?
Dr. Maron is affiliated with Hartford Hospital.
What medical group is Dr. William Robert Maron II part of?
Dr. Maron is linked to Hartford Hospital. Dmand AI links Dr. Maron to 1 more medical group.
Does Dr. William Robert Maron II accept Medicare?
Yes. CMS data shows Dr. Maron billed Medicare for 558 services in 2024, and Dr. Maron accepts Medicare assignment.
How many Medicare patients does Dr. William Robert Maron II see?
CMS counts 239 Medicare patients who saw Dr. Maron in 2024, with an average age of 76.
What services does Dr. William Robert Maron II bill to Medicare?
In 2024, Dr. Maron's most billed Medicare services were eye exam or test (92014), eye exam or test (92250) and office visit, established patient (99213).
Show 4 more questionsShow fewer questions
Where did Dr. William Robert Maron II go to medical school?
Dr. Maron graduated from Albany Medical College of Union University in 2017.
What drugs does Dr. William Robert Maron II prescribe most?
In 2024 Medicare Part D data, Dr. Maron's most prescribed drugs by claims were Latanoprost, Vyzulta and Timolol Maleate.
Has Dr. William Robert Maron II received payments from drug or device companies?
CMS Open Payments shows $4,750 in general payments to Dr. Maron from 18 companies from 2017 to 2025. The largest total came from TissueTech, Inc.
How long has Dr. William Robert Maron II been practicing?
Dr. Maron graduated from medical school in 2017, 9 years ago.
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