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

Individual provider Internal Medicine Physician · NPI 1568611465

Dr. Michael Frank Demyen, MD is a Gastroenterology in Denville, New Jersey. Qualified in 2000, 26 years ago. Practices with Medical Associates of Englewood PC, a 540-clinician group and accepts Medicare assignment. Licensed in New Jersey.

Years since qualifying
26
Licensed in
NJ
In the registry since
2008
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

16 Pocono Rd Ste 201
Denville, NJ 07834-2901
Phone: (973) 627-4430
Fax: (973) 586-2336
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 25MA07864700 (NJ)
Internal Medicine Physician Taxonomy 207R00000X · Licence 25MA07864700 (NJ)

Record details

NPI number1568611465
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 16, 2008
Last updated in NPPESJuly 21, 2022
Certification dateMarch 20, 2020
Mailing address16 Pocono Road, Suite 201, Denville, NJ 07834-2901

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2000 (26 years in practice)
Group practice Medical Associates Of Englewood Pc — 540 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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