Dr. Jillian Lee Marousek, MD
- Medicare services, 2024
- 110
- Medicare patients, 2024
- 229
- Hospital affiliations
- 1
- Industry payments
- $179
- Medical groups
- 2
- Practice address
- 5 Perryridge Rd, Greenwich, CT 06830
- Practice phone
- Call (203) 863-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Marousek'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. Jillian Lee Marousek is an anesthesiologist in Greenwich, Connecticut
Dr. Marousek practices at Greenwich Hospital in Greenwich, Connecticut, part of Yale New Haven Health System.
Dr. Marousek's NPI, 1639347115, was assigned on February 18, 2008. Dr. Marousek graduated from University of Virginia School of Medicine in 2003. Dr. Marousek holds Connecticut license 045071.
- NPI
- 1639347115NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850449844
- NPI enumeration date
- February 18, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 863-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jillian Lee Marousek practices at Greenwich Hospital in Greenwich, Connecticut
Dr. Marousek's primary practice is Greenwich Hospital, at 5 Perryridge Rd, Greenwich, CT 06830 in Fairfield County. The practice phone is (203) 863-3000.
- Greenwich Hospital5 Perryridge Rd, Greenwich, CT 06830 · Fairfield CountyPhone(203) 863-3000
Source: Dmand AI Affiliation Data
Dr. Jillian Lee Marousek is affiliated with 2 sites of care and 2 medical groups
Dr. Marousek's primary practice is Greenwich Hospital in Greenwich, Connecticut, part of Yale New Haven Health System. The medical group on file is Greenwich Anesthesiology Associates. Dmand AI also links Dr. Marousek to 1 more group practice or clinic and 1 medical group, 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. Jillian Lee Marousek's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marousek practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Greenwich Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jillian Lee Marousek is one of 654 anesthesiologists in Connecticut
Anesthesiology is Dr. Marousek's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dmand AI has Dr. Marousek's licenses on file in 2 states: Connecticut and New York.
Specialties and state licenses
- Anesthesiology, ConnecticutPrimary
- New York license
Anesthesiologists near Dr. Marousek
Counts of anesthesiologists 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. Jillian Lee Marousek billed Medicare for 110 services in 2024
CMS data shows 110 Medicare services from Dr. Marousek across 4 procedure codes in 2024, for 229 Medicare patients. Medicare paid $5,837 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Marousek's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 802024: 9924%
- Surgery
- 2023: 122024: 118%
Dr. Marousek compared with the Connecticut median for anesthesiologists, 2024
- Dr. Marousek
- Connecticut median
- Medicare services
- 110vs 8924% above
- Medicare patients
- 229vs 16043% above
Medians across 636 anesthesiologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Marousek'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. Marousek?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Marousek and other anesthesiologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jillian Lee Marousek treated 229 Medicare patients in 2024, average age 76
CMS counts 229 Medicare patients who saw Dr. Marousek in 2024. The largest group is 75 to 84, with 99 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.17, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Marousek's median patient age at 61, with 50% women.
Dr. Marousek's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Marousek's Medicare patients by sex, 2024
- Women12555%
- Men10445%
Chronic conditions among Dr. Marousek's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Cancer25%
- Ischemic heart disease23%
- Diabetes22%
- Anxiety19%
- Mood disorders19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marousek's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women50%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Jillian Lee Marousek takes part in Medicare
Dr. Marousek 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. Jillian Lee Marousek received $179 in industry payments from 2017 to 2024
CMS Open Payments shows 4 general payments to Dr. Marousek from 2 drug and device companies from 2017 to 2024. Consulting fees make up the largest share, 53% of the total. Pacira Pharmaceuticals Incorporated paid the most, $95.
General payments to Dr. Marousek by program year, 2017 to 2024
General payments to Dr. Marousek by kind, 2017 to 2024
- Consulting fees$9553%
- Food and beverage$8447%
Companies that paid Dr. Marousek the most, 2017 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jillian Lee Marousek graduated from University of Virginia School of Medicine
Dr. Marousek graduated from University of Virginia School of Medicine in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jillian Lee Marousek'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) |
| 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. Jillian Lee Marousek
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. Jillian Lee Marousek's NPI number?
Dr. Jillian Lee Marousek's NPI number is 1639347115. It was assigned on February 18, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Jillian Lee Marousek?
Dr. Jillian Lee Marousek is an anesthesiologist in Greenwich, Connecticut. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Jillian Lee Marousek practice?
Dr. Marousek practices at 5 Perryridge Rd, Greenwich, CT 06830. Dr. Marousek's primary practice is Greenwich Hospital in Greenwich, Connecticut, part of Yale New Haven Health System. Dmand AI also links Dr. Marousek to 1 group practice or clinic and 1 medical group.
What is Dr. Jillian Lee Marousek's office phone number?
The practice phone on file for Dr. Marousek is (203) 863-3000.
What is Dr. Jillian Lee Marousek's medical license number?
Dr. Marousek holds Connecticut license 045071, one of the licenses on file in 2 states.
Which states has Dr. Jillian Lee Marousek been licensed in?
Dmand AI has state licenses on file for Dr. Marousek in Connecticut and New York.
Which hospitals is Dr. Jillian Lee Marousek affiliated with?
Dr. Marousek practices at Greenwich Hospital in Greenwich, Connecticut.
What medical group is Dr. Jillian Lee Marousek part of?
Dr. Marousek is linked to Greenwich Anesthesiology Associates. Dmand AI links Dr. Marousek to 1 more medical group.
Does Dr. Jillian Lee Marousek accept Medicare?
Yes. CMS data shows Dr. Marousek billed Medicare for 110 services in 2024, and Dr. Marousek accepts Medicare assignment.
How many Medicare patients does Dr. Jillian Lee Marousek see?
CMS counts 229 Medicare patients who saw Dr. Marousek in 2024, with an average age of 76.
Show 4 more questionsShow fewer questions
What services does Dr. Jillian Lee Marousek bill to Medicare?
In 2024, Dr. Marousek's most billed Medicare services were anesthesia (00142), anesthesia (00731) and anesthesia (00811).
Where did Dr. Jillian Lee Marousek go to medical school?
Dr. Marousek graduated from University of Virginia School of Medicine in 2003.
Has Dr. Jillian Lee Marousek received payments from drug or device companies?
CMS Open Payments shows $179 in general payments to Dr. Marousek from 2 companies from 2017 to 2024. The largest total came from Pacira Pharmaceuticals Incorporated.
How long has Dr. Jillian Lee Marousek been practicing?
Dr. Marousek graduated from medical school in 2003, 23 years ago.
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