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

Dr. Steven Nathaniel Steinway, MD, PHD

Individual provider Gastroenterology Physician · NPI 1801327432

Dr. Steven Nathaniel Steinway, MD, PHD is a Gastroenterology in Morristown, New Jersey. Qualified in 2020, 6 years ago. Practices with Massachusetts General Physicians Organization Inc, a 3,484-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts, Maryland and New Jersey.

Years since qualifying
6
Licensed in
MA, MD, NJ
In the registry since
2017
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

101 Madison Ave Ste 100
Morristown, NJ 07960-7305
Phone: (973) 455-0404
Fax: (973) 540-8788
Show map & directions

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 25MA12920400 (NJ)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 1014222 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence D0089048 (MD)

Record details

NPI number1801327432
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedMarch 24, 2017
Last updated in NPPESJune 24, 2026
Certification dateJune 24, 2026

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Massachusetts General Physicians Organization Inc — 3484 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in Morristown