Dr. John A. Testa, MD
- Medicare services, 2024
- 1,198
- Medicare patients, 2024
- 192
- Part D claims, 2024
- 7,891
- Hospital affiliations
- 2
- Industry payments
- $10,790
- Practice address
- 56 Franklin Street, Waterbury, CT 06706
- Practice phone
- Call (203) 709-6020
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Testa'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. John A. Testa is an internist in Waterbury, Connecticut
Dr. Testa practices at Saint Mary's Hospital in Waterbury, Connecticut, part of Trinity Health.
Dr. Testa's NPI, 1609835735, was assigned on March 18, 2006. Dr. Testa holds Connecticut license 040224.
- NPI
- 1609835735NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2365509692
- NPI enumeration date
- March 18, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (203) 709-6020
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John A. Testa practices at Saint Mary's Hospital in Waterbury, Connecticut
Dr. Testa's primary practice is Saint Mary's Hospital, at 56 Franklin Street, Waterbury, CT 06706 in New Haven County. The practice phone is (203) 709-6020.
- Saint Mary's Hospital56 Franklin Street, Waterbury, CT 06706 · New Haven CountyPhone(203) 709-6020
Source: Dmand AI Affiliation Data
Dr. John A. Testa is affiliated with 8 sites of care and 3 medical groups
Dr. Testa's primary practice is Saint Mary's Hospital in Waterbury, Connecticut, part of Trinity Health. Dr. Testa is also affiliated with Hartford Hospital. The medical group on file is Trinity Health Of New England Medical Group. Dmand AI also links Dr. Testa to 2 more group practices and clinics, 2 home health agencies, 2 medical groups, 1 hospital outpatient department and 1 therapy and rehab clinic, 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. John A. Testa's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Testa practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Saint Mary's Hospital | Available with a free account |
| +7 more sites and 2 medical groups | 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 Trinity Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John A. Testa is one of 2,189 internists in Connecticut
Internal medicine is Dr. Testa's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Testa is licensed in Connecticut.
Specialties and state licenses
- Internal medicine, ConnecticutPrimary
Internists near Dr. Testa
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. John A. Testa billed Medicare for 1,198 services in 2024
CMS data shows 1,198 Medicare services from Dr. Testa across 15 procedure codes in 2024, for 192 Medicare patients. Medicare paid $96,729 for them. Every service was in an office.
Dr. Testa's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8182024: 65720%
- Other services
- 2023: 3472024: 3373%
- Tests and treatments
- 2023: 3282024: 20438%
Dr. Testa compared with the Connecticut median for internists, 2024
- Dr. Testa
- Connecticut median
- Medicare services
- 1,198vs 3903.1 times
- Medicare patients
- 192vs 17212% above
- Part D claims
- 7,124vs 34320.8 times
Medians across 2,185 internists in Connecticut with Dmand AI profiles that report each measure.
Dr. Testa'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. Testa?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Testa and other internists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John A. Testa treated 192 Medicare patients in 2024, average age 74
CMS counts 192 Medicare patients who saw Dr. Testa in 2024. The largest group is 65 to 74, with 79 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Testa's median patient age at 60, with 47% women.
Dr. Testa's Medicare patients by age, 2024
Dr. Testa's Medicare patients by sex, 2024
- Women8343%
- Men10957%
Chronic conditions among Dr. Testa's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Diabetes33%
- Anxiety29%
- Ischemic heart disease29%
- Mood disorders26%
- Depression25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Testa'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
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John A. Testa wrote 7,891 Medicare Part D claims in 2024
In 2024, Dr. Testa wrote 7,891 Medicare Part D claims for 565 patients. 80% of them were for generic drugs. CMS names the drug for 7,124 of them, across 132 drugs with 11 or more claims each, at $1,291,704 in total drug cost. In 2023, CMS named 6,776 claims across 140 drugs.
Dr. Testa's Part D claims by kind of drug, 2024
- Generic6,334 claims80%
- Brand-name1,459 claims18%
- Other98 claims1%
Dr. Testa'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. Testa's Part D claims, 2024
- Opioids2%180 of 7,891 claims
- Antibiotics1%95 of 7,891 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: 6,7762024: 7,1245%
Drugs named by CMS: 132 in 2024, 140 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. John A. Testa offers telehealth to Medicare patients
Dr. Testa accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Testa as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. John A. Testa received $10,790 in industry payments from 2016 to 2025
CMS Open Payments shows 612 general payments to Dr. Testa from 37 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 84% of the total. Takeda Pharmaceuticals U.S.A., Inc. paid the most, $3,026.
General payments to Dr. Testa by program year, 2016 to 2025
General payments to Dr. Testa by kind, 2016 to 2025
- Food and beverage$9,07084%
- Consulting fees$1,70316%
- Education$170%
Companies that paid Dr. Testa 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. John A. Testa'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) |
| 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| 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. John A. Testa
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. John A. Testa's NPI number?
Dr. John A. Testa's NPI number is 1609835735. It was assigned on March 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John A. Testa?
Dr. John A. Testa is an internist in Waterbury, Connecticut. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John A. Testa practice?
Dr. Testa practices at 56 Franklin Street, Waterbury, CT 06706. Dr. Testa's primary practice is Saint Mary's Hospital in Waterbury, Connecticut, part of Trinity Health. Dmand AI also links Dr. Testa to 2 group practices and clinics, 2 home health agencies, 2 medical groups, 1 hospital outpatient department and 1 therapy and rehab clinic.
What is Dr. John A. Testa's office phone number?
The practice phone on file for Dr. Testa is (203) 709-6020.
What is Dr. John A. Testa's medical license number?
Dr. Testa holds Connecticut license 040224.
Which hospitals is Dr. John A. Testa affiliated with?
Dr. Testa practices at Saint Mary's Hospital in Waterbury, Connecticut. Dr. Testa is also affiliated with Hartford Hospital.
What medical group is Dr. John A. Testa part of?
Dr. Testa is linked to Trinity Health Of New England Medical Group. Dmand AI links Dr. Testa to 2 more medical groups.
Does Dr. John A. Testa accept Medicare?
Yes. CMS data shows Dr. Testa billed Medicare for 1,198 services in 2024, and Dr. Testa accepts Medicare assignment.
Does Dr. John A. Testa offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Testa as offering telehealth services.
How many Medicare patients does Dr. John A. Testa see?
CMS counts 192 Medicare patients who saw Dr. Testa in 2024, with an average age of 74.
Show 4 more questionsShow fewer questions
What services does Dr. John A. Testa bill to Medicare?
In 2024, Dr. Testa's most billed Medicare services were office visit, established patient (99214), care management and other visits (99497) and medicare service (G0439).
What drugs does Dr. John A. Testa prescribe most?
In 2024 Medicare Part D data, Dr. Testa's most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Levothyroxine Sodium.
Has Dr. John A. Testa received payments from drug or device companies?
CMS Open Payments shows $10,790 in general payments to Dr. Testa from 37 companies from 2016 to 2025. The largest total came from Takeda Pharmaceuticals U.S.A., Inc.
How long has Dr. John A. Testa been practicing?
Dr. Testa graduated from medical school in 1999, 27 years ago.
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