Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Anna C Freitag, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1235113507

Anna C Freitag, MD practises Endocrinology in Waterbury, Connecticut. Graduated from University of Connecticut School of Medicine in 1994, 32 years ago. Practices with Trinity Health of New England Provider Network Organization Inc, a 635-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Connecticut.

Years since qualifying
32
Trained at
University of Connecticut School of Medicine
Licensed in
CT
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

56 Franklin St
Waterbury, CT 06706-1253
Phone: (203) 709-6000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 037590 (CT)

Record details

NPI number1235113507
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 1, 2005
Last updated in NPPESNovember 9, 2021
Certification dateNovember 9, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyENDOCRINOLOGY
Medical schoolUNIVERSITY OF CONNECTICUT SCHOOL OF MEDICINE
Graduated 1994 (32 years in practice)
Group practice Trinity Health Of New England Provider Network Organization Inc — 635 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients190
Services billed 440 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $1,885 97 payments · a meal or drink at a meeting or visit, not a fee
Education $7 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Trinity Health of New England Provider Network Organization Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 635 clinicians in the practice; 12 are shown here.