Internal Medicine, Endocrinology, Diabetes, & Metabolism · Kingsport, TN
NPI
1922104975
Since 2006
Specialty
Internal Medicine, Endocrinology, Diabetes, & Metabolism
Code 207RE0101X
Group practices
1
Medicare group memberships
Hospitals
1
Hospital affiliations
105 W Stone Dr, Ste 5d
Kingsport, TN, 37660
Phone (423) 857-2790
Groups this clinician bills Medicare through
Medicare paid, 2024
$65K
924 services
Medicare patients, 2024
507
Average age 73
Drug cost, 2024
$1.9M
6,884 prescriptions
Company payments, 2025
$36.44
From 1 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Michael R Nannenga was code 99214 (office e&m - established), 582 times for 378 patients. In total Michael R Nannenga billed 924 services in 12 codes, and Medicare paid $65K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2011-07-18.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99214 Office E&M - Established | Office | 582 | 378 | $84.03 | $49K |
| 95251 Test - Miscellaneous | Office | 149 | 70 | $25.03 | $3,729 |
| 99213 Office E&M - Established | Office | 81 | 81 | $54.15 | $4,386 |
| 99204 Office E&M - New | Office | 66 | 66 | $105.96 | $6,994 |
| 36415 Venipuncture Blood Collection | Office | 32 | 28 | $8.44 | $270 |
By year: 2022 $72K for 3,149 services; 2023 $64K for 919 services; 2024 $65K for 924 services.
Lab tests billed to Medicare, 2024
| Test code | Tests | Patients | Paid per test | Medicare paid |
|---|---|---|---|---|
| 36415 Venipuncture Blood Collection | 32 | 28 | $8.44 | $270 |
Medicare prescription drug claims, 2024
In 2024, the drug Michael R Nannenga prescribed most often to Medicare patients was Levothyroxine Sodium, with 1,507 prescriptions and refills. In total Michael R Nannenga wrote 6,884 Medicare prescriptions that cost $1.9M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Levothyroxine Sodium Generic | 1,507 | 4,071 | 396 | $13K |
| Methimazole Generic | 352 | 870 | 92 | $3,266 |
| Synthroid Levothyroxine Sodium | 310 | 680 | 67 | $25K |
| Lantus Solostar Insulin Glargine,hum.Rec.Anlog | 258 | 564 | 76 | $58K |
| Ozempic Semaglutide | 219 | 361 | 53 | $330K |
| Metformin Hcl Er Metformin Hcl | 187 | 517 | 62 | $2,737 |
| Novolog Flexpen Insulin Aspart | 173 | 344 | 60 | $64K |
| Mounjaro Tirzepatide | 172 | 186 | 31 | $189K |
| Metformin Hcl Generic | 168 | 440 | 43 | $1,072 |
| Jardiance Empagliflozin | 145 | 231 | 31 | $133K |
| Atorvastatin Calcium Generic | 133 | 398 | 42 | $2,004 |
| Glimepiride Generic | 113 | 310 | 36 | $1,600 |
| Novolog Insulin Aspart | 103 | 227 | 34 | $40K |
| Basaglar Kwikpen U-100 Insulin Glargine,hum.Rec.Anlog | 90 | 178 | 24 | $73K |
| Hydrocortisone Generic | 90 | 190 | 22 | $4,210 |
Brand drugs: 3,010 claims; generic drugs: 3,424 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Michael R Nannenga $36.44 ($36.44 in general payments such as food, travel and fees) from 1 company. The largest payer was Novo Nordisk Inc with $36.44.
| Company | Payments | Amount |
|---|---|---|
| Novo Nordisk Inc NVO | 2 | $36.44 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.