Dr. Uyen To, MD

  • Hartford, CT
  • Hepatology physician
NPI1770873812PAC ID2668783804
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
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Personal email
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Mobile number
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Social profiles

Primary practice

Hartford Hospital

Hospital · Hartford, Connecticut

See all 11 affiliations

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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 and contact details
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
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Mobile number
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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 Hospital
    80 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.

See all 11 affiliations for Dr. To

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.

EHR by site
SiteEHR vendor and product
Hartford HospitalAvailable with a free account
+6 more sites and 3 medical groupsAvailable 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, ConnecticutPrimaryLicense 1.060593 · taxonomy 207RI0008X

Hepatology physicians near Dr. To

Counts of hepatology physicians with a Dmand AI profile, by place and practice. Each opens the list.

9hepatology physicians in Connecticut
4hepatology physicians in Hartford
3hepatology physicians at Hartford Hospital

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.

Medicare services, 2024153
Medicare patients92
Paid by Medicare$11,181
Procedure codes4

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.

See all procedures by Dr. To

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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.

Medicare patients, 202492
Average age65
Average risk score3.00
Also on Medicaid47%

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

  1. High blood pressure75%
  2. High cholesterol62%
  3. Diabetes59%
  4. Chronic kidney disease46%
  5. Arthritis45%
  6. Mood disorders39%
  7. Anxiety38%
  8. 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.

Part D claims, 2024787
Drugs named by CMS23
Total drug cost$377,821
Part D patients120

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.

See all prescribing by Dr. To

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.

Papers14
Years published2014 to 2024

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

Recent publications by Dr. To

See all 14 publications and co-authors

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.

How network discovery works

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.

See all payments to Dr. To

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Dr. Uyen To's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation 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.

Show 7 more questionsShow fewer questions

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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