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Edit this profileAt a glance
- 1818 Chapel Dr Ste C, Findlay, OH 45840
About Nathaniel Ratnasamy
Based in Findlay, OH, Nathaniel A. J. Ratnasamy, M. D. is listed in the NPI registry under infectious disease. Nathaniel graduated from University of North Dakota School of Medicine in 1989. Medicare claims data shows Nathaniel provided 1,110 services to 611 patients. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and insertion of needle into vein for collection of blood sample. NPI 1558363317 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (419) 429-7637
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
1818 CHAPEL DR STE C
Findlay, OH 45840
Conditions Commonly Evaluated or Treated
Within Infectious Disease generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Post-infection conditions
Most searched conditions
- Hepatitis C
- HIV
- Long COVID
- Lyme disease
- Recurrent MRSA
- Travel medicine
Bacterial infections
- C. diff Infection
- Cat Scratch Fever
- Drug-Resistant Bacterial Infection
- Flesh-Eating Infection
- NTM lung infection
- Recurrent bacterial vaginosis
- Tick-Borne Infection
- Tuberculosis
Bones & joints
Cardiovascular
- Central Line Infection
- Infective endocarditis
- Pacemaker Infection
Digestive infections
- Salmonella food poisoning
Fungal infections
- Aspergillosis mold infection
- Chronic Yeast Infection
- Cryptococcal fungal infection
- Fungal lung infection
- Fungal sinus infection
- Valley fever
General symptoms
- Frequent Infections
- High fever
- Sepsis Recovery
Neurological infections
Parasitic infections
- Malaria
- Parasite Infection
- Toxoplasmosis
Respiratory infections
- Walking Pneumonia in Children
- Whooping Cough
Sexually transmitted infections
Skin & soft tissue
- Cellulitis
- Diabetic Foot Infection
- Dog or Animal Bite Infection
- Non-Healing Wound Infection
- Post-surgery fever or infection
- Skin and soft-tissue abscess
Travel-related infections
- Dengue fever
- Typhoid fever
- Zika virus
Urinary tract
Viral infections
- Chronic Epstein-Barr virus reactivation
- Cytomegalovirus
- Hepatitis B
- Mononucleosis
- Mpox
- Shingles
- West Nile virus
Procedures & services
Most searched procedures
- IV antibiotic management
- PrEP prescription
- Travel vaccines
Allergy & immunology
- Penicillin Allergy Testing
Allergy & Pharmacology
- Antibiotic allergy desensitization
Antiviral treatments
- Antiviral medication management
- Hepatitis C antiviral treatment
- Mpox antiviral treatment
Consultation & second opinions
- Diabetic Foot Ulcer Debridement Consultation
- Infection Screening Before Biologics
- Post-Travel Illness Workup
- Pre-Chemotherapy Infection Clearance
- Pre-Transplant Infection Screening
- Prosthetic Hardware Infection Evaluation
- Second Opinion on Antibiotic Treatment
Diagnostic evaluations
- Chronic viral fatigue evaluation
- Medical parasite clearance evaluation
- Post-sepsis syndrome evaluation
- Sinus infection culture evaluation
- Unexplained fever workup
Diagnostics & screening
- Blood Culture Workup
- Fungal Blood Testing
- Immune System Workup for Frequent Infections
- Joint injection or aspiration
- Spinal Tap Infection Analysis
- Stool Parasite Testing
- TB Skin Test
- Tuberculosis Blood Test
- Wound Culture and Sensitivity
Gastrointestinal treatments
- Stool Transplant
Infusions & Medications
- IV Antibiotic Home Monitoring
- Long-term suppressive antibiotic therapy
Lab testing & monitoring
- Comprehensive STI screening panel
- HIV viral load monitoring
- Infectious diarrhea stool pathogen PCR panel
- Mold and environmental fungal testing
- Specialized Lyme disease confirmation testing
- Tropical disease blood work
Medication management
- Atypical Mycobacteria Treatment Plan
- Chronic Hepatitis B Medication Management
- Infected Central Line Removal Coordination
- Malaria Treatment
- Oral Antibiotic Step-Down Therapy
- Recurrent Shingles Suppression
- Syphilis Injections
- Systemic Antifungal Therapy
Prevention & Prophylaxis
- Doxy-PEP prescription
Prevention & prophylaxis
- Emergency HIV Prevention (PEP)
- Needlestick Injury Evaluation
- Rabies Post-Exposure Shots
- Tick Bite Evaluation
Travel medicine
- International travel health consultation
- Yellow fever vaccine consultation
Procedures Most Often Billed to Medicare
1,110 services · 611 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
146 | More often than most peers in Infectious Disease |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
331 | More often than most peers in Infectious Disease |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
285 | More than most peers in Infectious Disease |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
127 | More often than most peers in Infectious Disease |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
86 | More often than most peers in Infectious Disease |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
49 | As often as other peers in Infectious Disease |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
49 | More than most peers in Infectious Disease |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
37 | As often as other peers in Infectious Disease |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at University of North Dakota School of Medicine 4
Other providers in the same specialty who trained at the same institution.
Class of 1989 at University of North Dakota School of Medicine 8
Providers who graduated from the same medical school in the same year.
More connections — 3 related providers in 1 group
Also performs Insertion of needle into vein for collection of blood sample 3
Providers in OH who bill this service to Medicare most often.
Common questions
What is Nathaniel A. J. Ratnasamy's specialty?
Nathaniel A. J. Ratnasamy is an infectious disease specialist in Findlay, OH. That is the designation recorded for this NPI in the federal registry, where it is listed as “Infectious Disease”.
NPI registry
Where can I find Nathaniel A. J. Ratnasamy?
Nathaniel A. J. Ratnasamy is listed at 1818 Chapel Dr Ste C, Findlay, OH 45840. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Nathaniel A. J. Ratnasamy?
The number on file is (419) 429-7637. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Nathaniel A. J. Ratnasamy?
Nathaniel A. J. Ratnasamy's National Provider Identifier is 1558363317. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Nathaniel A. J. Ratnasamy's education?
Nathaniel A. J. Ratnasamy attended University of North Dakota School of Medicine, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Nathaniel A. J. Ratnasamy have?
Nathaniel A. J. Ratnasamy has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What is Nathaniel A. J. Ratnasamy known for?
According to Medicare billing data, Nathaniel A. J. Ratnasamy performs procedures including insertion of needle into vein for collection of blood sample, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Nathaniel A. J. Ratnasamy's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Nathaniel A. J. Ratnasamy. If this is you, claiming it is free.
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