Doctor profile · Federal record
Dr. Nathaniel Ratnasamy, M. D.
Infectious Disease Physician (CMS: Infectious Disease) · Findlay, OH
- NPI 1558363317
- Accepts Medicare
- MIPS 67.8 / 100 · 2023
- 37 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1818 Chapel Dr Ste C
Findlay, OH 45840
(419) 429-7637
fax (419) 429-7641
Credentials & registration
- NPI registered
- August 2005 — 21 yrs on file
- Profile last updated
- July 11, 2018
- Year of graduation
- 1989 — 37 yrs since
- Specialty taxonomy
- 207RI0200X — NUCC code
- State license (1)
- Ohio #35082006
- Medicaid
- OH #2361215
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1558363317. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
959
Distinct HCPCS
10
Medicare allowed
$80,911
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 262 | 99 | $76 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 259 | 133 | $85 | |
36415 |
Insertion of needle into vein for collection of blood sample | 117 | 74 | $8 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 101 | 90 | $125 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 72 | 48 | $120 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 47 | 45 | $168 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 40 | 40 | $105 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 27 | 23 | $54 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 21 | 15 | $48 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 13 | 13 | $159 |
In context: peer comparison
Among 1 peers in Findlay Infectious Disease Physician, average services per provider: 95. This provider delivers 10× the peer median.Open Payments
Industry payments received
All-time total
$41,245
Transactions
43
Manufacturers
9
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Takeda Pharmaceuticals U.S.A., INC. | 13 | $40,625.00 | |
| ViiV Healthcare Company | 12 | $162.85 | |
| Alexion Pharmaceuticals, INC. | 1 | $125.00 | |
| Gilead Sciences, INC. | 4 | $81.68 | |
| Abbvie INC. | 5 | $80.44 | |
| Merck Sharp & Dohme LLC | 4 | $78.73 | |
| E.R. Squibb & Sons, L.L.C. | 1 | $42.73 | |
| Aimmune Therapeutics, INC. | 2 | $27.71 | |
| Insmed, INC. | 1 | $21.25 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
750
Patients
142
Total drug cost
$998,387
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cephalexin | Generic | 105 | 39 | $1,061 |
| Descovy (Emtricitabine/Tenofov Alafenam) | Brand | 67 | 0 | $152,527 |
| Doxycycline Hyclate | Generic | 63 | 26 | $2,383 |
| Tivicay (Dolutegravir Sodium) | Brand | 57 | 0 | $132,718 |
| Isentress (Raltegravir Potassium) | Brand | 54 | 0 | $106,906 |
| Dovato (Dolutegravir Sodium/Lamivudine) | Brand | 53 | 0 | $161,283 |
| Ciprofloxacin Hcl | Generic | 52 | 28 | $357 |
| Vancomycin Hcl | Generic | 50 | 16 | $6,304 |
| Genvoya (Elviteg/Cob/Emtri/Tenof Alafen) | Brand | 48 | 0 | $235,695 |
| Methenamine Hippurate | Generic | 39 | 0 | $2,727 |
Hospital affiliations
Frequently asked questions
What is Dr. Nathaniel Ratnasamy's medical specialty?
Dr. Nathaniel Ratnasamy practices Infectious Disease Physician in Findlay, OH.
Where does Dr. Nathaniel Ratnasamy practice?
Dr. Nathaniel Ratnasamy practices at 1818 Chapel Dr Ste C, Findlay, OH 45840. Office phone: 4194297637.
What is Dr. Nathaniel Ratnasamy's NPI?
Dr. Nathaniel Ratnasamy's National Provider Identifier (NPI) is 1558363317, issued by NPPES.
Does Dr. Nathaniel Ratnasamy accept Medicare assignment?
Yes. Dr. Nathaniel Ratnasamy accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nathaniel Ratnasamy commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99213); Insertion of needle into vein for collection of blood sample (HCPCS 36415). Source: CMS Medicare Physician & Other Practitioners file.