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

Gregory S Johnston, MD

Individual provider Emergency Medicine Physician · NPI 1457344137

Gregory S Johnston, MD is an Emergency Medicine in New London, Connecticut. Qualified in 1990, 36 years ago. Practices with Emergency Medicine Services of Nh, LLC, a 64-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
36
Licensed in
CT
In the registry since
2005
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

365 Montauk Ave
New London, CT 06320-4700
Phone: (860) 442-0711
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 64109 (CT)

Record details

NPI number1457344137
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 26, 2005
Last updated in NPPESOctober 29, 2024
Mailing address365 Montauk Ave, New London, CT 06320-4700

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 1990 (36 years in practice)
Group practice Emergency Medicine Services Of Nh, Llc — 64 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in New London