Doctor profile · Federal record
Dr. John Armstrong, DO
Internal Medicine Physician (CMS: Internal Medicine) · Student in an Organized Health Care Education/Training Program · Rolla, MO
- NPI 1427679232
- Accepts Medicare
- 6 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
1050 W 10Th St
Rolla, MO 654012905
(573) 364-9000 - Additional location
-
1000 Gw Ln
Waynesville, MO 655832339
(573) 774-2715
fax (573) 202-2410 - Additional location
-
1000 W 10Th St
Rolla, MO 654012905 - Additional location
-
817 Oak Knoll RD
Rolla, MO 654014715
(573) 466-0228
Show 1 more location
Credentials & registration
- NPI registered
- May 2020 — 6 yrs on file
- Profile last updated
- February 27, 2024
- Year of graduation
- 2020 — 6 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Missouri #2023028809
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1427679232. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
115
Distinct HCPCS
3
Medicare allowed
$11,641
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 83 | 46 | $92 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 17 | 17 | $118 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 15 | 15 | $135 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 127. This provider delivers 0.9× the peer median.Open Payments
Industry payments received
All-time total
$635
Transactions
27
Manufacturers
12
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Corcept Therapeutics | 4 | $125.68 | |
| Novo Nordisk Inc | 6 | $118.40 | |
| Novartis Pharmaceuticals Corporation | 4 | $94.36 | |
| Lilly USA, LLC | 3 | $68.27 | |
| Amgen Inc. | 2 | $40.87 | |
| Phathom Pharmaceuticals, Inc. | 2 | $37.56 | |
| Boehringer Ingelheim Pharmaceuticals, Inc. | 1 | $34.47 | |
| Dexcom, Inc. | 1 | $29.45 | |
| Esperion Therapeutics, Inc. | 1 | $28.81 | |
| Sumitomo Pharma America, Inc. | 1 | $22.78 | |
| Exact Sciences Corporation | 1 | $19.55 | |
| Bayer Healthcare Pharmaceuticals Inc. | 1 | $14.78 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
98
Patients
28
Total drug cost
$1,593
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 27 | 12 | $240 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 18 | 16 | $340 |
| Nifedipine Er (Nifedipine) | Brand | 17 | 0 | $455 |
| Gabapentin | Generic | 13 | 0 | $401 |
| Tramadol Hcl | Generic | 12 | 0 | $49 |
| Potassium Chloride | Generic | 11 | 0 | $108 |
Hospital affiliations
Frequently asked questions
What is Dr. John Armstrong's medical specialty?
Dr. John Armstrong practices Internal Medicine Physician in Rolla, MO.
Where does Dr. John Armstrong practice?
Dr. John Armstrong practices at 1050 W 10Th St, Rolla, MO 654012905. Office phone: 5733649000.
What is Dr. John Armstrong's NPI?
Dr. John Armstrong's National Provider Identifier (NPI) is 1427679232, issued by NPPES.
Does Dr. John Armstrong accept Medicare assignment?
Yes. Dr. John Armstrong accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Armstrong commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.