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

James J Sonn, MD

Individual provider Anesthesiology Physician · NPI 1912925579

James J Sonn, MD is an Anesthesiology in Cooperstown, New York. Qualified in 1988, 38 years ago. Practices with Mary Imogene Bassett Hospital, a 779-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
38
Licensed in
NY
In the registry since
2006
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

1 Atwell Rd
Cooperstown, NY 13326-1301
Phone: (607) 547-3456
Show map & directions

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

Additional practice locations (2)

  • 1450 Western Ave Ste 102, Albany, NY 12203-3539 — (518) 463-0050
  • 2215 Burdett Ave, Troy, NY 12180-2466 — (518) 525-8600

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 190571 (NY)

Record details

NPI number1912925579
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 18, 2006
Last updated in NPPESNovember 25, 2025
Certification dateNovember 25, 2025
Mailing address1 Atwell Rd, Cooperstown, NY 13326-1301

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 1988 (38 years in practice)
Group practice Mary Imogene Bassett Hospital — 779 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Cooperstown