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

Mark J Kranis, DO

Individual provider Internal Medicine Physician · NPI 1548217920

Mark J Kranis, DO is a Cardiovascular Disease (Cardiology) in Worcester, Massachusetts. Qualified in 2002, 24 years ago. Practices with Reliant Medical Group Inc, a 638-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
24
Licensed in
MA
In the registry since
2006
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

123 Summer St
Worcester, MA 01608-1216
Phone: (508) 363-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 228056 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 228056 (MA)

Record details

NPI number1548217920
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 30, 2006
Last updated in NPPESJune 10, 2010
Mailing address123 Summer St, Worcester, MA 01608-1216

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Reliant Medical Group Inc — 638 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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