Dr. Elizabeth C. Riordan, MD
- Medicare services, 2024
- 236
- Medicare patients, 2024
- 163
- Part D claims, 2024
- 14
- Hospital affiliations
- 2
- Industry payments
- $2,346
- Practice address
- 71 Haynes St, Manchester, CT 06040
- Practice phone
- Call (860) 647-4780
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Riordan's professional email, personal email and mobile number
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Dr. Elizabeth C. Riordan is a general surgeon in Manchester, Connecticut
Dr. Riordan practices at Manchester Memorial Hospital in Manchester, Connecticut, part of Hartford HealthCare.
Dr. Riordan's NPI, 1528078995, was assigned on August 9, 2006. Dr. Riordan graduated from University of Connecticut in 1991. Dr. Riordan holds Connecticut license 045438.
- NPI
- 1528078995NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234223306
- NPI enumeration date
- August 9, 2006
- NPI status
- Active
- Practice phone
- (860) 647-4780
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Elizabeth C. Riordan practices at Manchester Memorial Hospital in Manchester, Connecticut
Dr. Riordan's primary practice is Manchester Memorial Hospital, at 71 Haynes St, Manchester, CT 06040 in Hartford County. The practice phone is (860) 647-4780.
- Manchester Memorial Hospital71 Haynes St, Manchester, CT 06040 · Hartford CountyPhone(860) 647-4780
Source: Dmand AI Affiliation Data
Dr. Elizabeth C. Riordan is affiliated with 5 sites of care and 4 medical groups
Dr. Riordan's primary practice is Manchester Memorial Hospital in Manchester, Connecticut, part of Hartford HealthCare. Dr. Riordan is also affiliated with UConn Health Waterbury Hospital. The medical group on file is Hartford HealthCare Medical Group Specialists. Dmand AI also links Dr. Riordan to 3 more group practices and clinics and 3 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 Dr. Elizabeth C. Riordan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Riordan practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Manchester Memorial Hospital | Available with a free account |
| +4 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Elizabeth C. Riordan is one of 303 general surgeons in Connecticut
Surgery is Dr. Riordan's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Riordan is licensed in Connecticut.
Specialties and state licenses
- Surgery, ConnecticutPrimary
General surgeons near Dr. Riordan
Counts of general surgeons 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 C. Riordan billed Medicare for 236 services in 2024
CMS data shows 236 Medicare services from Dr. Riordan across 2 procedure codes in 2024, all of them office visits, for 163 Medicare patients. Medicare paid $22,818 for them. Every service was in an office.
Dr. Riordan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2582024: 2369%
Dr. Riordan compared with the Connecticut median for general surgeons, 2024
- Dr. Riordan
- Connecticut median
- Medicare services
- 236vs 1092.2 times
- Medicare patients
- 163vs 9572% above
- Part D claims
- 16vs 2536% below
Medians across 295 general surgeons in Connecticut with Dmand AI profiles that report each measure.
Dr. Riordan'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 C. Riordan treated 163 Medicare patients in 2024, average age 76
CMS counts 163 Medicare patients who saw Dr. Riordan in 2024. The largest group is 75 to 84, with 77 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 13% are also on Medicaid. Their average risk score is 1.00, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Riordan's median patient age at 59, with 96% women.
Dr. Riordan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Riordan's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Cancer71%
- Arthritis50%
- Osteoporosis30%
- Anxiety23%
- Diabetes18%
- Mood disorders16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Riordan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women96%
- Men2%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Elizabeth C. Riordan wrote 14 Medicare Part D claims in 2024
In 2024, Dr. Riordan wrote 14 Medicare Part D claims for 11 patients. 86% of them were for generic drugs. They cover 1 drug, with $82 in total drug cost. In 2018, CMS named 30 claims across 1 drug.
Dr. Riordan's Part D claims by kind of drug, 2024
- Generic12 claims86%
- Brand-name and other2 claims14%
Dr. Riordan's most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 302019: 1647%
Drugs named by CMS: 1 in 2019, 1 in 2018.
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. Elizabeth C. Riordan takes part in Medicare
Mastectomy: 1 to 10 procedures (CMS shows small counts as a range)
Source: Doctors and Clinicians Utilization Data (CMS)
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Dr. Elizabeth C. Riordan received $2,346 in industry payments from 2019 to 2025
CMS Open Payments shows 32 general payments to Dr. Riordan from 11 drug and device companies from 2019 to 2025. Travel and lodging make up the largest share, 53% of the total. Carl Zeiss Meditec, Inc. paid the most, $1,408.
General payments to Dr. Riordan by program year, 2019 to 2025
General payments to Dr. Riordan by kind, 2019 to 2025
- Travel and lodging$1,23453%
- Food and beverage$1,11247%
Companies that paid Dr. Riordan the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Elizabeth C. Riordan graduated from University of Connecticut
Dr. Riordan graduated from University of Connecticut in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Elizabeth C. Riordan'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 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 Utilization Data (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. Elizabeth C. Riordan
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 C. Riordan's NPI number?
Dr. Elizabeth C. Riordan's NPI number is 1528078995. It was assigned on August 9, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Elizabeth C. Riordan?
Dr. Elizabeth C. Riordan is a general surgeon in Manchester, Connecticut. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Elizabeth C. Riordan practice?
Dr. Riordan practices at 71 Haynes St, Manchester, CT 06040. Dr. Riordan's primary practice is Manchester Memorial Hospital in Manchester, Connecticut, part of Hartford HealthCare. Dmand AI also links Dr. Riordan to 3 group practices and clinics and 3 medical groups.
What is Dr. Elizabeth C. Riordan's office phone number?
The practice phone on file for Dr. Riordan is (860) 647-4780.
What is Dr. Elizabeth C. Riordan's medical license number?
Dr. Riordan holds Connecticut license 045438.
Which hospitals is Dr. Elizabeth C. Riordan affiliated with?
Dr. Riordan practices at Manchester Memorial Hospital in Manchester, Connecticut. Dr. Riordan is also affiliated with UConn Health Waterbury Hospital.
What medical group is Dr. Elizabeth C. Riordan part of?
Dr. Riordan is linked to Hartford HealthCare Medical Group Specialists. Dmand AI links Dr. Riordan to 3 more medical groups.
Does Dr. Elizabeth C. Riordan accept Medicare?
Yes. CMS data shows Dr. Riordan billed Medicare for 236 services in 2024.
How many Medicare patients does Dr. Elizabeth C. Riordan see?
CMS counts 163 Medicare patients who saw Dr. Riordan in 2024, with an average age of 76.
What services does Dr. Elizabeth C. Riordan bill to Medicare?
In 2024, Dr. Riordan's most billed Medicare services were office visit, established patient (99214) and office visit, established patient (99215).
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Where did Dr. Elizabeth C. Riordan go to medical school?
Dr. Riordan graduated from University of Connecticut in 1991.
What drugs does Dr. Elizabeth C. Riordan prescribe most?
In 2019 Medicare Part D data, Dr. Riordan's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. Elizabeth C. Riordan received payments from drug or device companies?
CMS Open Payments shows $2,346 in general payments to Dr. Riordan from 11 companies from 2019 to 2025. The largest total came from Carl Zeiss Meditec, Inc.
How long has Dr. Elizabeth C. Riordan been practicing?
Dr. Riordan graduated from medical school in 1991, 35 years ago.
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