John A. Testa, MD
Internal Medicine Physician · Prospect, CT
John A. Testa, MD is an internal medicine physician with a practice address in Prospect, Connecticut, and NPI 1609835735, issued on Mar 18, 2006. Check the license (Connecticut 040224, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John A. Testa
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 040224 CT
Self-reported in NPPES; status is on the state search - Practice location
- 166 Waterbury RD, Prospect, CT 06712
- Phone
- (203) 758-0878
- Enumerated
- Mar 18, 2006
- Record last updated
- Oct 28, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (203) 758-0877
- Medicaid ID
- 1402247 CT
- Medicare enrollment
- Enrolled (PECOS I20090331000489); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 166 Waterbury RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carlos Almeida, MDInternal Medicine Physician1588633036
- Alexander Alvarez, M.D.Internal Medicine Physician1447219571
- Jenny Amos-AffulFamily Nurse Practitioner1063358083
- Michael D'Aquila, PTPhysical Therapist1811999568
- Patrick Duffy, M.D.Orthopaedic Surgery Physician1912905621
- Terri Dvorkin, APRNNurse Practitioner1659340198
Verify John A. Testa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 040224Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average internal medicine physician in 2024
7,891 Medicare Part D claims for 565 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 180 claims were for opioids.
Most prescribed
- Atorvastatin Calcium572 claims
- Rosuvastatin Calcium405 claims
- Levothyroxine Sodium267 claims
- Amlodipine Besylate265 claims
- Lisinopril251 claims
- Ozempic241 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,616.81
108 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Rehabilitation Associates IncFairfield, CT
- Trinity Health OF New England Provider Network Organization IncWaterbury, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John A. Testa among 2,623 internal medicine physician records in Connecticut
John A. Testa, MD is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 52% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1999 · median 2004 among the 1,646 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 internal medicine physician records list a practice address in Prospect
They are 5 of the 125 NPPES records with a practice address in Prospect, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Prospect → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Carlos Almeida, MDProspect, CT 067121588633036
- Alexander Alvarez, M.D.Prospect, CT 067121447219571
- Aditi Mukherji, M.D.Prospect, CT 067121790077287
- James Uberti, MDProspect, CT 067121083683544
- Amit Barua, MBBSWaterbury, CT 067081710620760
- Alina Bobrova, MDWaterbury, CT 067081548949696
- Peter Giacomazzi, MDWolcott, CT 067161710935564
- Michael Granieri, D.O.Waterbury, CT 067081730767229
Common questions
What is John A. Testa, MD's NPI number?
John A. Testa, MD's National Provider Identifier (NPI) is 1609835735, issued on Mar 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John A. Testa, MD located?
The NPPES record lists a practice address at 166 Waterbury RD, Prospect, CT, 06712. Phone: (203) 758-0878. Providers update this record themselves, so call before visiting.
How can I verify John A. Testa, MD's license?
NPPES lists Connecticut license number 040224, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John A. Testa, MD prescribe under Medicare Part D?
In 2024, John A. Testa, MD had 7,891 Medicare Part D claims for 565 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.