Dr. Johnathan Lee Nieves, MD
- Medicare services, 2024
- 147
- Medicare patients, 2024
- 141
- Part D claims, 2024
- 131
- Publications
- 7
- Hospital affiliations
- 1
- Practice address
- 263 Farmington Ave, Farmington, CT 06030
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Uconn Health Carole and Ray Neag Comprehensive Cancer Center - HOPD
Childrens Hospital outpatient department · Farmington, Connecticut
Find Dr. Nieves' 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. Johnathan Lee Nieves is an emergency medicine physician in Farmington, Connecticut
Dr. Nieves practices at Uconn Health Carole and Ray Neag Comprehensive Cancer Center - HOPD in Farmington, Connecticut.
Dr. Nieves' NPI, 1275039067, was assigned on April 2, 2018. Dr. Nieves holds Connecticut license 67330.
- NPI
- 1275039067NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5597013664
- NPI enumeration date
- April 2, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Johnathan Lee Nieves practices at Uconn Health Carole and Ray Neag Comprehensive Cancer Center - HOPD in Farmington, Connecticut
Dr. Nieves' primary practice is Uconn Health Carole and Ray Neag Comprehensive Cancer Center - HOPD, at 263 Farmington Ave, Farmington, CT 06030.
- Uconn Health Carole and Ray Neag Comprehensive Cancer Center - HOPD263 Farmington Ave, Farmington, CT 06030
Source: Dmand AI Affiliation Data
Dr. Johnathan Lee Nieves is affiliated with 2 sites of care and 3 medical groups
Dr. Nieves' primary practice is Uconn Health Carole and Ray Neag Comprehensive Cancer Center - HOPD in Farmington, Connecticut. Dr. Nieves is also affiliated with UConn John Dempsey Hospital. The medical group on file is Trinity Health Of New England Medical Group. Dmand AI also links Dr. Nieves to 2 more medical groups, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Johnathan Lee Nieves' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nieves practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Uconn Health Carole and Ray Neag Comprehensive Cancer Center - HOPD | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Johnathan Lee Nieves is one of 683 emergency medicine physicians in Connecticut
Emergency medicine is Dr. Nieves' primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Nieves is licensed in Connecticut.
Specialties and state licenses
- Emergency medicine, ConnecticutPrimary
Emergency medicine physicians near Dr. Nieves
Counts of emergency medicine 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. Johnathan Lee Nieves billed Medicare for 147 services in 2024
CMS data shows 147 Medicare services from Dr. Nieves across 4 procedure codes in 2024, for 141 Medicare patients. Medicare paid $17,345 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nieves' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1822024: 14719%
Dr. Nieves compared with the Connecticut median for emergency medicine physicians, 2024
- Dr. Nieves
- Connecticut median
- Medicare services
- 147vs 24340% below
- Medicare patients
- 141vs 25044% below
- Part D claims
- 11vs 4877% below
Medians across 695 emergency medicine physicians in Connecticut with Dmand AI profiles that report each measure.
Dr. Nieves' 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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nieves and other emergency medicine physicians in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Johnathan Lee Nieves treated 141 Medicare patients in 2024, average age 75
CMS counts 141 Medicare patients who saw Dr. Nieves in 2024. The largest group is 85 and over, with 52 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 49% are also on Medicaid. Their average risk score is 1.99, 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. Nieves' median patient age at 70, with 58% women.
Dr. Nieves' Medicare patients by age, 2024
Dr. Nieves' Medicare patients by sex, 2024
- Women7553%
- Men6647%
Chronic conditions among Dr. Nieves' Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Anxiety54%
- Arthritis50%
- Mood disorders49%
- Depression44%
- Ischemic heart disease43%
- Chronic kidney disease42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nieves' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Johnathan Lee Nieves wrote 131 Medicare Part D claims in 2024
In 2024, Dr. Nieves wrote 131 Medicare Part D claims for 78 patients. 90% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $68 in total drug cost. In 2023, CMS named 14 claims across 1 drug.
Dr. Nieves' Part D claims by kind of drug, 2024
- Generic118 claims90%
- Brand-name13 claims10%
Dr. Nieves' 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. Nieves' Part D claims, 2024
- Opioids11%15 of 131 claims
- Antibiotics15%20 of 131 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: 142024: 1121%
Drugs named by CMS: 1 in 2024, 1 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
How Dr. Johnathan Lee Nieves takes part in Medicare
Dr. Nieves 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. Johnathan Lee Nieves has 7 publications on record
Dmand AI links 7 papers to Dr. Nieves, published from 2013 to 2016. 2016 was the busiest year, with 3. The most frequent topics are Frail Elderly, Cell Differentiation and Ecuador. Dr. Nieves' most frequent co-authors are Kristen Angele Cagino, MD, Kathryn Fanning and Margaret H. Baron, MD.
Dr. Nieves' papers by year, 2013 to 2016
Topics Dr. Nieves writes about most
- Frail Elderly
- Cell Differentiation
- Ecuador
- Geriatric Assessment
Dr. Nieves' most frequent co-authors
- Kristen Angele Cagino, MD3 shared papers
- Kathryn Fanning3 shared papers
- Margaret H. Baron, MD1 shared paper
Recent publications by Dr. Nieves
Geriatr Gerontol Int
See who Dr. Nieves researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Nieves works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Johnathan Lee Nieves received $606 in industry payments from 2021 to 2025
CMS Open Payments shows 12 general payments to Dr. Nieves from 4 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 64% of the total. Abbott Laboratories paid the most, $312.
General payments to Dr. Nieves by program year, 2021 to 2025
General payments to Dr. Nieves by kind, 2021 to 2025
- Food and beverage$38864%
- Education$21836%
Companies that paid Dr. Nieves the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Johnathan Lee Nieves'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 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 National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Johnathan Lee Nieves
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. Johnathan Lee Nieves' NPI number?
Dr. Johnathan Lee Nieves' NPI number is 1275039067. It was assigned on April 2, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Johnathan Lee Nieves?
Dr. Johnathan Lee Nieves is an emergency medicine physician in Farmington, Connecticut. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Johnathan Lee Nieves practice?
Dr. Nieves practices at 263 Farmington Ave, Farmington, CT 06030. Dr. Nieves' primary practice is Uconn Health Carole and Ray Neag Comprehensive Cancer Center - HOPD in Farmington, Connecticut. Dmand AI also links Dr. Nieves to 2 medical groups.
What is Dr. Johnathan Lee Nieves' medical license number?
Dr. Nieves holds Connecticut license 67330.
Which hospitals is Dr. Johnathan Lee Nieves affiliated with?
Dr. Nieves is affiliated with UConn John Dempsey Hospital.
What medical group is Dr. Johnathan Lee Nieves part of?
Dr. Nieves is linked to Trinity Health Of New England Medical Group. Dmand AI links Dr. Nieves to 2 more medical groups.
Does Dr. Johnathan Lee Nieves accept Medicare?
Yes. CMS data shows Dr. Nieves billed Medicare for 147 services in 2024, and Dr. Nieves accepts Medicare assignment.
How many Medicare patients does Dr. Johnathan Lee Nieves see?
CMS counts 141 Medicare patients who saw Dr. Nieves in 2024, with an average age of 75.
What services does Dr. Johnathan Lee Nieves bill to Medicare?
In 2024, Dr. Nieves' most billed Medicare services were emergency department visit (99284), emergency department visit (99285) and critical care (99291).
What drugs does Dr. Johnathan Lee Nieves prescribe most?
In 2024 Medicare Part D data, Dr. Nieves' most prescribed drugs by claims were Ondansetron ODT.
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Has Dr. Johnathan Lee Nieves received payments from drug or device companies?
CMS Open Payments shows $606 in general payments to Dr. Nieves from 4 companies from 2021 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. Johnathan Lee Nieves been practicing?
Dr. Nieves graduated from medical school in 2018, 8 years ago.
Does Dr. Johnathan Lee Nieves do research?
Dmand AI links 7 publications to Dr. Nieves, published from 2013 to 2016.
Who does Dr. Johnathan Lee Nieves publish with?
Dr. Nieves' most frequent co-authors are Kristen Angele Cagino, MD (3 shared papers), Kathryn Fanning (3 shared papers) and Margaret H. Baron, MD (1 shared paper).
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