DR. NATHANIEL A. J. RATNASAMY (M. D.) – Infectious Disease Physician, NPI 1558363317
Infectious Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
417 INFECTIOUS DISEASE in OH
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Provider Addresses for DR. NATHANIEL A. J. RATNASAMY (M. D.)
Chapel Drive, Lake Cascades Office Park, Findlay, Hancock County, Ohio, 45840, United States
FINDLAY, OH 458401344
Phone: (419) 429-7637
Fax: (419) 429-7641
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 67 Open Payments records for all available years, with a total value of $67,527.
Total Amount is formed as General ($67,527) + Research ($0) + Ownership ($0) = $67,527.
Last reported payment date: 2024-12-09 • Largest payer in this snapshot: Takeda Pharmaceuticals U.S.A., Inc. ($66,525).
Total Amount
$67,527
General + Research + Ownership
Payments
67
Total payment records
General Amount
$67,527
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-09
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | $66,525 |
| Gilead Sciences, Inc. | $271 |
| ViiV Healthcare Company | $227 |
| Alexion Pharmaceuticals, Inc. | $125 |
| ABBVIE INC. | $122 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2011-12-12
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20111212000723 | I | Infectious Disease | OH | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 262 | 99 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 259 | 133 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 117 | 74 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 101 | 90 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 72 | 48 | $0 |
Insurance plans in this area (ZIP 45840)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | OH | |
| Otolaryngology, Internal Medicine | OH | |
| Physician Assistant | OH | |
| Physician Assistant | OH | |
| Clinical Social Worker | OH | |
| General Surgery | ID | |
| Pain Management | OH | |
| Sports Medicine, Orthopedic Surgery | OH | |
| General Surgery, Colorectal Surgery (Proctology) | OH | |
| G A S T R O E N T E R O L O G Y | IN |
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