Dr. Elizabeth Ann Mariano, MD
- Medicare services, 2024
- 76,724
- Medicare patients, 2024
- 351
- Part D claims, 2024
- 856
- MIPS score, 2024
- 100
- Hospital affiliations
- 1
- Practice address
- 536 Saybrook Rd, Middletown, CT 06457
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Connecticut Oncology Group PC - HOPD
Acute Care Hospital outpatient department · Middletown, Connecticut
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Dr. Elizabeth Ann Mariano is a hematologist and oncologist in Middletown, Connecticut
Dr. Mariano practices at Connecticut Oncology Group PC - HOPD in Middletown, Connecticut.
Dr. Mariano's NPI, 1467659557, was assigned on July 2, 2007. Dr. Mariano holds Connecticut license 051948.
- NPI
- 1467659557NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850525510
- NPI enumeration date
- July 2, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Elizabeth Ann Mariano practices at Connecticut Oncology Group PC - HOPD in Middletown, Connecticut
Dr. Mariano's primary practice is Connecticut Oncology Group PC - HOPD, at 536 Saybrook Rd, Middletown, CT 06457.
- Connecticut Oncology Group PC - HOPD536 Saybrook Rd, Middletown, CT 06457
Source: Dmand AI Affiliation Data
Dr. Elizabeth Ann Mariano is affiliated with 3 sites of care and 1 medical group
Dr. Mariano's primary practice is Connecticut Oncology Group PC - HOPD in Middletown, Connecticut. Dr. Mariano is also affiliated with Middlesex Hospital. The medical group on file is Connecticut Oncology Group. Dmand AI also links Dr. Mariano to 1 more group practice or clinic, named with a free account. Dr. Mariano's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Elizabeth Ann Mariano's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mariano practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Connecticut Oncology Group PC - HOPD | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Elizabeth Ann Mariano is one of 175 hematologists and oncologists in Connecticut
Hematology and oncology is Dr. Mariano's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dmand AI has Dr. Mariano's licenses on file in 2 states: Connecticut and Massachusetts.
Specialties and state licenses
- Hematology and oncology, ConnecticutPrimary
- Massachusetts license
Hematologists and oncologists near Dr. Mariano
Counts of hematologists and oncologists 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. Elizabeth Ann Mariano billed Medicare for 76,724 services in 2024
CMS data shows 76,724 Medicare services from Dr. Mariano across 22 procedure codes in 2024, for 351 Medicare patients. Medicare paid $197,513 for them. Every service was in an office.
Dr. Mariano's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 15,9422024: 39,098145%
- Other services
- 2023: 19,1402024: 35,52086%
- Tests and treatments
- 2023: 1,1212024: 1,24111%
- Office and hospital visits
- 2023: 8802024: 8652%
Dr. Mariano compared with the Connecticut median for hematologists and oncologists, 2024
- Dr. Mariano
- Connecticut median
- Medicare services
- 76,724vs 541141.8 times
- Medicare patients
- 351vs 20869% above
- Part D claims
- 734vs 45163% above
Medians across 168 hematologists and oncologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Mariano'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Elizabeth Ann Mariano treated 351 Medicare patients in 2024, average age 76
CMS counts 351 Medicare patients who saw Dr. Mariano in 2024. The largest group is 75 to 84, with 143 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 18% are also on Medicaid. Their average risk score is 2.03, 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. Mariano's median patient age at 72, with 62% women.
Dr. Mariano's Medicare patients by age, 2024
Dr. Mariano's Medicare patients by sex, 2024
- Women20157%
- Men15043%
Chronic conditions among Dr. Mariano's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Cancer52%
- Arthritis46%
- Chronic kidney disease36%
- Anxiety33%
- Diabetes32%
- Ischemic heart disease30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mariano's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women62%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Elizabeth Ann Mariano wrote 856 Medicare Part D claims in 2024
In 2024, Dr. Mariano wrote 856 Medicare Part D claims for 177 patients. 77% of them were for generic drugs. CMS names the drug for 734 of them, across 17 drugs with 11 or more claims each, at $2,062,838 in total drug cost. In 2023, CMS named 767 claims across 16 drugs.
Dr. Mariano's Part D claims by kind of drug, 2024
- Generic660 claims77%
- Brand-name196 claims23%
Dr. Mariano'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 Dr. Mariano's Part D claims, 2024
- Antibiotics1%12 of 856 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7672024: 7344%
Drugs named by CMS: 17 in 2024, 16 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
Dr. Elizabeth Ann Mariano scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Mariano for performance year 2024, reported as part of a group. Dr. Mariano accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Mariano's MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Elizabeth Ann Mariano received $988 in industry payments from 2016 to 2025
CMS Open Payments shows 39 general payments to Dr. Mariano from 20 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 84% of the total. Celgene Corporation paid the most, $122.
General payments to Dr. Mariano by program year, 2016 to 2025
General payments to Dr. Mariano by kind, 2016 to 2025
- Food and beverage$82784%
- Education$16116%
Companies that paid Dr. Mariano the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Elizabeth Ann Mariano'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 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Elizabeth Ann Mariano
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. Elizabeth Ann Mariano's NPI number?
Dr. Elizabeth Ann Mariano's NPI number is 1467659557. It was assigned on July 2, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Elizabeth Ann Mariano?
Dr. Elizabeth Ann Mariano is a hematologist and oncologist in Middletown, Connecticut. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Elizabeth Ann Mariano practice?
Dr. Mariano practices at 536 Saybrook Rd, Middletown, CT 06457. Dr. Mariano's primary practice is Connecticut Oncology Group PC - HOPD in Middletown, Connecticut. Dmand AI also links Dr. Mariano to 1 group practice or clinic.
What is Dr. Elizabeth Ann Mariano's medical license number?
Dr. Mariano holds Connecticut license 051948, one of the licenses on file in 2 states.
Which states has Dr. Elizabeth Ann Mariano been licensed in?
Dmand AI has state licenses on file for Dr. Mariano in Connecticut and Massachusetts.
Which hospitals is Dr. Elizabeth Ann Mariano affiliated with?
Dr. Mariano is affiliated with Middlesex Hospital.
What medical group is Dr. Elizabeth Ann Mariano part of?
Dr. Mariano is linked to Connecticut Oncology Group.
Does Dr. Elizabeth Ann Mariano accept Medicare?
Yes. CMS data shows Dr. Mariano billed Medicare for 76,724 services in 2024, and Dr. Mariano accepts Medicare assignment.
What is Dr. Elizabeth Ann Mariano's MIPS score?
Dr. Mariano's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Elizabeth Ann Mariano see?
CMS counts 351 Medicare patients who saw Dr. Mariano in 2024, with an average age of 76.
Show 4 more questionsShow fewer questions
What services does Dr. Elizabeth Ann Mariano bill to Medicare?
In 2024, Dr. Mariano's most billed Medicare services were medicare temporary code (Q5101), injected or infused drug (J1439) and injected or infused drug (J1453).
What drugs does Dr. Elizabeth Ann Mariano prescribe most?
In 2024 Medicare Part D data, Dr. Mariano's most prescribed drugs by claims were Anastrozole, Hydroxyurea and Calquence.
Has Dr. Elizabeth Ann Mariano received payments from drug or device companies?
CMS Open Payments shows $988 in general payments to Dr. Mariano from 20 companies from 2016 to 2025. The largest total came from Celgene Corporation.
How long has Dr. Elizabeth Ann Mariano been practicing?
Dr. Mariano graduated from medical school in 2007, 19 years ago.
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