Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Donald Gustave Ammerman, MD

Individual provider Psychiatry Physician · NPI 1316032295

Dr. Donald Gustave Ammerman, MD practises Psychiatry in Danbury, Connecticut. Graduated from University of Connecticut School of Medicine in 2005, 21 years ago. Practices with Contemporary Care LLC, a 30-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Connecticut and New Hampshire.

Years since qualifying
21
Trained at
University of Connecticut School of Medicine
Licensed in
CT, NH
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

84 Hospital Ave Cpc Associates
Danbury, CT 06810 Not confirmed with CMS for 17 years — call before visiting
Phone: (203) 792-6060
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 047925 (CT)
Psychiatry Physician Taxonomy 2084P0800X · Licence RT1438 (NH)

Record details

NPI number1316032295
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 4, 2006
Last updated in NPPESAugust 20, 2009

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Also practisesADDICTION MEDICINE
Medical schoolUNIVERSITY OF CONNECTICUT SCHOOL OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice Contemporary Care Llc — 30 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 patients48
Services billed 600 a service is one billed item, such as a visit, a test or a procedure
Average patient age66

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.

Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $367,823 130 payments
Travel and Lodging $23,449 208 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $10,774 165 payments · a meal or drink at a meeting or visit, not a fee
Consulting Fee $9,920 2 payments

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.

Colleagues at Contemporary Care LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 30 clinicians in the practice; 12 are shown here.

Other providers in Danbury