Doctor profile · Federal record
Dr. John Greifenkamp, MD
Internal Medicine Physician · Longview, TX
- NPI 1396712980
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
707 Hollybrook Dr
Longview, TX 756052410
(903) 757-6042
fax (903) 232-8226
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- January 15, 2008
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Texas #E0479
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1396712980. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$31
Transactions
2
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Boston Scientific Corporation | 2 | $30.62 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
111
Patients
0
Total drug cost
$13,303
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Metoprolol Tartrate | Generic | 19 | 0 | $124 |
| Carvedilol | Generic | 18 | 0 | $205 |
| Losartan Potassium | Generic | 15 | 0 | $112 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 13 | 0 | $164 |
| Praluent Pen (Alirocumab) | Brand | 12 | 0 | $5,671 |
| Spironolactone | Generic | 12 | 0 | $99 |
| Eliquis (Apixaban) | Brand | 11 | 0 | $6,659 |
| Rosuvastatin Calcium | Generic | 11 | 0 | $268 |
Frequently asked questions
What is Dr. John Greifenkamp's medical specialty?
Dr. John Greifenkamp practices Internal Medicine Physician in Longview, TX.
Where does Dr. John Greifenkamp practice?
Dr. John Greifenkamp practices at 707 Hollybrook Dr, Longview, TX 756052410. Office phone: 9037576042.
What is Dr. John Greifenkamp's NPI?
Dr. John Greifenkamp's National Provider Identifier (NPI) is 1396712980, issued by NPPES.