Dr. Uyen To, MD
- Medicare services, 2024
- 153
- Medicare patients, 2024
- 92
- Part D claims, 2024
- 787
- Publications
- 14
- MIPS score, 2024
- 87
- Practice address
- 80 Seymour Street, Hartford, CT 06102
- Practice phone
- Call (860) 545-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. To'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. Uyen To is a hepatology physician in Hartford, Connecticut
Dr. To practices at Hartford Hospital in Hartford, Connecticut, part of Hartford HealthCare.
Dr. To's NPI, 1770873812, was assigned on April 11, 2011. Dr. To holds Connecticut license 1.060593.
- NPI
- 1770873812NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668783804
- NPI enumeration date
- April 11, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (860) 545-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Uyen To practices at Hartford Hospital in Hartford, Connecticut
Dr. To's primary practice is Hartford Hospital, at 80 Seymour Street, Hartford, CT 06102 in Hartford County. The practice phone is (860) 545-5000.
- Hartford Hospital80 Seymour Street, Hartford, CT 06102 · Hartford CountyPhone(860) 545-5000
Source: Dmand AI Affiliation Data
Dr. Uyen To is affiliated with 7 sites of care and 4 medical groups
Dr. To's primary practice is Hartford Hospital in Hartford, Connecticut, part of Hartford HealthCare. Dr. To is also affiliated with Yale New Haven Hospital. The medical group on file is Hartford Hospital. Dmand AI also links Dr. To to 2 more hospitals, 3 group practices and clinics and 3 medical groups, each named with a free account. Dr. To's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Uyen To's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. To practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hartford Hospital | Available with a free account |
| +6 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Uyen To is one of 9 hepatology physicians in Connecticut
Hepatology is Dr. To's primary specialty in the NPI Registry, under taxonomy code 207RI0008X. Dr. To is licensed in Connecticut.
Specialties and state licenses
- Hepatology, ConnecticutPrimary
Hepatology physicians near Dr. To
Counts of hepatology physicians 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. Uyen To billed Medicare for 153 services in 2024
CMS data shows 153 Medicare services from Dr. To across 4 procedure codes in 2024, for 92 Medicare patients. Medicare paid $11,181 for them.
Dr. To's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1712024: 15311%
Where Dr. To's Medicare services took place, 2024
- In an office3624%
- In a facility11776%
Dr. To'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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Source: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data
Dr. Uyen To treated 92 Medicare patients in 2024, average age 65
CMS counts 92 Medicare patients who saw Dr. To in 2024. The largest group is 65 to 74, with 41 patients. 75% of them have high blood pressure, and 62% have high cholesterol. 47% are also on Medicaid. Their average risk score is 3.00, 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. To's median patient age at 60, with 49% women.
Dr. To's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. To's Medicare patients by sex, 2024
- Women4145%
- Men5155%
Chronic conditions among Dr. To's Medicare patients, 2024
- High blood pressure75%
- High cholesterol62%
- Diabetes59%
- Chronic kidney disease46%
- Arthritis45%
- Mood disorders39%
- Anxiety38%
- Alcohol and drug use disorders36%
Share of Medicare patients with each condition. A patient can have several.
Dr. To's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Uyen To wrote 787 Medicare Part D claims in 2024
In 2024, Dr. To wrote 787 Medicare Part D claims for 120 patients. 80% of them were for generic drugs. CMS names the drug for 629 of them, across 23 drugs with 11 or more claims each, at $377,821 in total drug cost. In 2023, CMS named 708 claims across 25 drugs.
Dr. To's Part D claims by kind of drug, 2024
- Generic633 claims80%
- Brand-name and other154 claims20%
Dr. To'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. To's Part D claims, 2024
- Antibiotics17%135 of 787 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: 7082024: 62911%
Drugs named by CMS: 23 in 2024, 25 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. Uyen To scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. To for performance year 2024, reported as part of a group. Dr. To accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. To as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. To's MIPS scores, performance year 2024
- 87of 100Final score
- 77.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Uyen To has 14 publications on record
Dmand AI links 14 papers to Dr. To, published from 2014 to 2024. 2021 was the busiest year, with 3. The most frequent topics are Ascites, Depressive Disorder, Major and Hepatolenticular Degeneration. Dr. To has published most often in Case Rep Med. Dr. To's most frequent co-authors are Ayse Kubra Coskun, MD, Paula Cristina Zimbrean, MD and Michael Peter Angarone, DO.
Dr. To's papers by year, 2014 to 2024
Topics Dr. To writes about most
- Ascites
- Depressive Disorder, Major
- Hepatolenticular Degeneration
Dr. To's most frequent co-authors
- Ayse Kubra Coskun, MD3 shared papers
- Paula Cristina Zimbrean, MD3 shared papers
- Michael Peter Angarone, DO1 shared paper
Recent publications by Dr. To
Major Depressive Disorder in an International Multisite Wilson Disease Registry (opens in a new tab)
J Acad Consult Liaison Psychiatry
Clin Gastroenterol Hepatol
J Acad Consult Liaison Psychiatry
See who Dr. To researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. To works with, so you can find a warm path to the right hepatology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Uyen To received $1,200 in industry payments in 2020
CMS Open Payments shows 1 general payment to Dr. To from 1 drug or device company in 2020. Consulting fees make up the largest share, 100% of the total. Alexion Pharmaceuticals, Inc. paid the most, $1,200.
Companies that paid Dr. To the most, 2020 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Uyen To's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Uyen To
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. Uyen To's NPI number?
Dr. Uyen To's NPI number is 1770873812. It was assigned on April 11, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Uyen To?
Dr. Uyen To is a hepatology physician in Hartford, Connecticut. The primary specialty in the NPI Registry is Hepatology Physician (taxonomy code 207RI0008X).
Where does Dr. Uyen To practice?
Dr. To practices at 80 Seymour Street, Hartford, CT 06102. Dr. To's primary practice is Hartford Hospital in Hartford, Connecticut, part of Hartford HealthCare. Dmand AI also links Dr. To to 2 hospitals, 3 group practices and clinics and 3 medical groups.
What is Dr. Uyen To's office phone number?
The practice phone on file for Dr. To is (860) 545-5000.
What is Dr. Uyen To's medical license number?
Dr. To holds Connecticut license 1.060593.
Which hospitals is Dr. Uyen To affiliated with?
Dr. To practices at Hartford Hospital in Hartford, Connecticut. Dr. To is also affiliated with Yale New Haven Hospital. Dmand AI links Dr. To to 2 more hospitals.
What medical group is Dr. Uyen To part of?
Dr. To is linked to Hartford Hospital. Dmand AI links Dr. To to 3 more medical groups.
Does Dr. Uyen To accept Medicare?
Yes. CMS data shows Dr. To billed Medicare for 153 services in 2024, and Dr. To accepts Medicare assignment.
Does Dr. Uyen To offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. To as offering telehealth services.
What is Dr. Uyen To's MIPS score?
Dr. To's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Uyen To see?
CMS counts 92 Medicare patients who saw Dr. To in 2024, with an average age of 65.
What services does Dr. Uyen To bill to Medicare?
In 2024, Dr. To's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99214) and hospital inpatient care (99222).
What drugs does Dr. Uyen To prescribe most?
In 2024 Medicare Part D data, Dr. To's most prescribed drugs by claims were Xifaxan, Ursodiol and Pantoprazole Sodium.
Has Dr. Uyen To received payments from drug or device companies?
CMS Open Payments shows $1,200 in general payments to Dr. To from 1 company from 2020 to 2020. The largest total came from Alexion Pharmaceuticals, Inc.
How long has Dr. Uyen To been practicing?
Dr. To graduated from medical school in 2011, 15 years ago.
Does Dr. Uyen To do research?
Dmand AI links 14 publications to Dr. To, published from 2014 to 2024.
Who does Dr. Uyen To publish with?
Dr. To's most frequent co-authors are Ayse Kubra Coskun, MD (3 shared papers), Paula Cristina Zimbrean, MD (3 shared papers) and Michael Peter Angarone, DO (1 shared paper).
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