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

Dr. Stephen Lawler Hasak, MD

Individual provider Gastroenterology Physician · NPI 1184063562

Dr. Stephen Lawler Hasak, MD is a Gastroenterology in Saint Louis, Missouri. Graduated from Albany Medical College of Union University in 2013, 13 years ago. Practices with Albany Medical College, a 1,057-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Missouri.

Years since qualifying
13
Trained at
Albany Medical College of Union University
Licensed in
MO
In the registry since
2013
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

1 Barnes Jewish Hospital Plz
Saint Louis, MO 63110-1003
Phone: (314) 747-2075
Fax: (314) 454-5042
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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 2015007987 (MO)

Record details

NPI number1184063562
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 19, 2013
Last updated in NPPESJuly 2, 2019

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolALBANY MEDICAL COLLEGE OF UNION UNIVERSITY
Graduated 2013 (13 years in practice)
Group practice Albany Medical College — 1057 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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