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

Jason Harhay, DO

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1457858383

Jason Harhay, DO is an Internal Medicine in Merriam, Kansas. Qualified in 2018, 8 years ago. Practices with Missouri Intensivist Services LLC, a 21-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Kansas, New York and Tennessee.

Years since qualifying
8
Licensed in
KS, NY, TN
In the registry since
2018
Specialties on file
3
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.

See every abbreviation used in this directory →

Practice location Address checks out

9820 W 55th St
Merriam, KS 66203-2004
Phone: (609) 338-7088
Show map & directions

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

Additional practice locations (1)

  • 2157 Main St, Buffalo, NY 14214-2692 — (716) 862-1000

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 308518 (NY)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 94-11681 (KS)
Internal Medicine Physician Taxonomy 207R00000X · Licence 4303 (TN)

Record details

NPI number1457858383
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 8, 2018
Last updated in NPPESJuly 14, 2026
Certification dateJuly 14, 2026
Mailing address3901 Rainbow Blvd, Kansas City, KS 66160-8500

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Missouri Intensivist Services Llc — 21 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount