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

Dr. David R Marks, MD

Individual provider Addiction Medicine (Preventive Medicine) Physician · NPI 1841486149

Dr. David R Marks, MD is an Internal Medicine in Ansonia, Connecticut. Graduated from Yale University School of Medicine in 1984, 42 years ago. Practices with Griffin Faculty Physicians Inc, a 125-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Connecticut.

Years since qualifying
42
Trained at
Yale University School of Medicine
Licensed in
CT
In the registry since
2007
Specialties on file
2
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

111 Wakelee Ave
Ansonia, CT 06401-1151
Phone: (203) 308-2781
Fax: (203) 308-2726
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 032912 (CT)
Addiction Medicine (Preventive Medicine) Physician Taxonomy 2083A0300X · Licence 032912 (CT)

Record details

NPI number1841486149
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 20, 2007
Last updated in NPPESDecember 7, 2020
Certification dateDecember 7, 2020
Mailing address67 Maple Ave, Derby, CT 06418-1328

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolYALE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1984 (42 years in practice)
Group practice Griffin Faculty Physicians Inc — 125 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare