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

Dr. Nathaniel A. J. Ratnasamy, MD

Individual provider Infectious Disease Physician · NPI 1558363317

Dr. Nathaniel A. J. Ratnasamy, MD is an Infectious Disease in Findlay, Ohio. Graduated from University of North Dakota School of Medicine in 1989, 37 years ago. Practices with Specialty Physicians of Blanchard Valley LLC, a 115-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Ohio.

Years since qualifying
37
Trained at
University of North Dakota School of Medicine
Licensed in
OH
In the registry since
2005
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

1818 Chapel Dr Ste C
Findlay, OH 45840
Phone: (419) 429-7637
Fax: (419) 429-7641
Show map & directions

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

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 35082006 (OH)

Record details

NPI number1558363317
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 11, 2005
Last updated in NPPESJuly 11, 2018

Medicare enrollment

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

Medicare specialtyINFECTIOUS DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF NORTH DAKOTA SCHOOL OF MEDICINE
Graduated 1989 (37 years in practice)
Group practice Specialty Physicians Of Blanchard Valley Llc — 115 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

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