Dr. Catherine Elisabeth Hylwa, MD
- Medicare services, 2024
- 836
- Medicare patients, 2024
- 203
- Part D claims, 2024
- 8,874
- MIPS score, 2024
- 94
- Hospital affiliations
- 4
- Practice address
- 163 Broadway St, Colchester, CT 06415
- Practice phone
- Call (860) 972-9033
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Hartford Healthcare Medical Group
Colchester, Connecticut
Find Dr. Hylwa'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. Catherine Elisabeth Hylwa is an internist in Colchester, Connecticut
Dr. Hylwa practices at Hartford Healthcare Medical Group in Colchester, Connecticut.
Dr. Hylwa's NPI, 1124092515, was assigned on February 14, 2006. Dr. Hylwa holds Connecticut license 39118.
- NPI
- 1124092515NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022159466
- NPI enumeration date
- February 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (860) 972-9033
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Catherine Elisabeth Hylwa practices at Hartford Healthcare Medical Group in Colchester, Connecticut
Dr. Hylwa's primary practice is Hartford Healthcare Medical Group, at 163 Broadway St, Colchester, CT 06415 in Capitol County. The practice phone is (860) 972-9033.
- Hartford Healthcare Medical Group163 Broadway St, Colchester, CT 06415 · Capitol CountyPhone(860) 972-9033
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Catherine Elisabeth Hylwa is affiliated with 9 sites of care and 2 medical groups
Dr. Hylwa's primary practice is Hartford Healthcare Medical Group in Colchester, Connecticut. Dr. Hylwa is also affiliated with Lawrence + Memorial Hospital. The medical group on file is Hartford HealthCare Medical Group. Dmand AI also links Dr. Hylwa to 3 more hospitals, 2 group practices and clinics, 1 home health agency, 1 hospice 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. Catherine Elisabeth Hylwa's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hylwa practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hartford Healthcare Medical Group | Available with a free account |
| +8 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Catherine Elisabeth Hylwa is one of 2,189 internists in Connecticut
Internal medicine is Dr. Hylwa's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Hylwa is licensed in Connecticut.
Specialties and state licenses
- Internal medicine, ConnecticutPrimary
Internists near Dr. Hylwa
Counts of internists 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. Catherine Elisabeth Hylwa billed Medicare for 836 services in 2024
CMS data shows 836 Medicare services from Dr. Hylwa across 13 procedure codes in 2024, for 203 Medicare patients. Medicare paid $73,424 for them. Every service was in an office.
Dr. Hylwa's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5002024: 498No change
- Other services
- 2023: 1192024: 20673%
- Tests and treatments
- 2023: 1082024: 8719%
- Lab and pathology
- 2023: 1022024: 4556%
Dr. Hylwa compared with the Connecticut median for internists, 2024
- Dr. Hylwa
- Connecticut median
- Medicare services
- 836vs 3902.1 times
- Medicare patients
- 203vs 17218% above
- Part D claims
- 8,125vs 34323.7 times
Medians across 2,185 internists in Connecticut with Dmand AI profiles that report each measure.
Dr. Hylwa'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. Hylwa?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hylwa and other internists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Catherine Elisabeth Hylwa treated 203 Medicare patients in 2024, average age 73
CMS counts 203 Medicare patients who saw Dr. Hylwa in 2024. The largest group is 65 to 74, with 73 patients. 70% of them have high blood pressure, and 69% have high cholesterol. 35% are also on Medicaid. Their average risk score is 1.10, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hylwa's median patient age at 62, with 62% women.
Dr. Hylwa's Medicare patients by age, 2024
Dr. Hylwa's Medicare patients by sex, 2024
- Women11858%
- Men8542%
Chronic conditions among Dr. Hylwa's Medicare patients, 2024
- High blood pressure70%
- High cholesterol69%
- Arthritis34%
- Anxiety29%
- Diabetes28%
- Mood disorders25%
- Ischemic heart disease22%
- Depression21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hylwa's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
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. Catherine Elisabeth Hylwa wrote 8,874 Medicare Part D claims in 2024
In 2024, Dr. Hylwa wrote 8,874 Medicare Part D claims for 697 patients. 90% of them were for generic drugs. CMS names the drug for 8,125 of them, across 146 drugs with 11 or more claims each, at $489,766 in total drug cost. In 2023, CMS named 7,976 claims across 148 drugs.
Dr. Hylwa's Part D claims by kind of drug, 2024
- Generic7,943 claims90%
- Brand-name852 claims10%
- Other79 claims1%
Dr. Hylwa'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. Hylwa's Part D claims, 2024
- Opioids9%806 of 8,874 claims
- Antibiotics1%121 of 8,874 claims
- Antipsychotics, patients 65 and over0%41 of 8,874 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: 7,9762024: 8,1252%
Drugs named by CMS: 146 in 2024, 148 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. Catherine Elisabeth Hylwa scored 94 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Hylwa for performance year 2024, reported through an alternative payment model (APM). Dr. Hylwa accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Hylwa as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Hylwa's MIPS scores, performance year 2024
- 94of 100Final score
- 83.4of 100Quality
- 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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Catherine Elisabeth Hylwa received $96 in industry payments from 2016 to 2025
CMS Open Payments shows 4 general payments to Dr. Hylwa from 2 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Exact Sciences Corporation paid the most, $66.
General payments to Dr. Hylwa by program year, 2016 to 2025
Companies that paid Dr. Hylwa 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. Catherine Elisabeth Hylwa's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Catherine Elisabeth Hylwa
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. Catherine Elisabeth Hylwa's NPI number?
Dr. Catherine Elisabeth Hylwa's NPI number is 1124092515. It was assigned on February 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Catherine Elisabeth Hylwa?
Dr. Catherine Elisabeth Hylwa is an internist in Colchester, Connecticut. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Catherine Elisabeth Hylwa practice?
Dr. Hylwa practices at 163 Broadway St, Colchester, CT 06415. Dr. Hylwa's primary practice is Hartford Healthcare Medical Group in Colchester, Connecticut. Dmand AI also links Dr. Hylwa to 3 hospitals, 2 group practices and clinics, 1 home health agency, 1 hospice and 1 medical group.
What is Dr. Catherine Elisabeth Hylwa's office phone number?
The practice phone on file for Dr. Hylwa is (860) 972-9033.
What is Dr. Catherine Elisabeth Hylwa's medical license number?
Dr. Hylwa holds Connecticut license 39118.
Which hospitals is Dr. Catherine Elisabeth Hylwa affiliated with?
Dr. Hylwa is affiliated with Lawrence + Memorial Hospital. Dmand AI links Dr. Hylwa to 3 more hospitals.
What medical group is Dr. Catherine Elisabeth Hylwa part of?
Dr. Hylwa is linked to Hartford HealthCare Medical Group. Dmand AI links Dr. Hylwa to 1 more medical group.
Does Dr. Catherine Elisabeth Hylwa accept Medicare?
Yes. CMS data shows Dr. Hylwa billed Medicare for 836 services in 2024, and Dr. Hylwa accepts Medicare assignment.
Does Dr. Catherine Elisabeth Hylwa offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Hylwa as offering telehealth services.
What is Dr. Catherine Elisabeth Hylwa's MIPS score?
Dr. Hylwa's MIPS final score for performance year 2024 is 94 out of 100, reported through an alternative payment model (APM).
Show 5 more questionsShow fewer questions
How many Medicare patients does Dr. Catherine Elisabeth Hylwa see?
CMS counts 203 Medicare patients who saw Dr. Hylwa in 2024, with an average age of 73.
What services does Dr. Catherine Elisabeth Hylwa bill to Medicare?
In 2024, Dr. Hylwa's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0439).
What drugs does Dr. Catherine Elisabeth Hylwa prescribe most?
In 2024 Medicare Part D data, Dr. Hylwa's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Oxycodone HCl.
Has Dr. Catherine Elisabeth Hylwa received payments from drug or device companies?
CMS Open Payments shows $96 in general payments to Dr. Hylwa from 2 companies from 2016 to 2025. The largest total came from Exact Sciences Corporation.
How long has Dr. Catherine Elisabeth Hylwa been practicing?
Dr. Hylwa graduated from medical school in 1992, 34 years ago.
Selling to internal medicine practices?
See internists in Connecticut by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card