Doctor profile · Federal record
Dr. Kent Alexander Cassmeyer, MD
Internal Medicine Physician (CMS: Internal Medicine) · O Fallon, MO
- NPI 1417307505
- Accepts Medicare
- 11 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
300 Winding Woods Dr Ste 214
O Fallon, MO 633664773
(636) 614-3289
fax (636) 272-3680
Credentials & registration
- NPI registered
- June 2016 — 10 yrs on file
- Profile last updated
- August 28, 2019
- Year of graduation
- 2015 — 11 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Missouri #2019024541
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1417307505. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
640
Distinct HCPCS
8
Medicare allowed
$72,155
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 258 | 166 | $125 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 166 | 112 | $89 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 115 | 115 | $128 | |
G0008 |
Administration of influenza virus vaccine | 28 | 28 | $30 | |
90662 |
Influenza vaccine split virus, preservative free | 23 | 23 | $72 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 19 | 15 | $169 | |
G0009 |
Administration of pneumococcal vaccine | 16 | 16 | $30 | |
90677 |
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 15 | 15 | $282 |
In context: peer comparison
Among 5 peers in O Fallon Internal Medicine Physician, average services per provider: 79. This provider delivers 8.1× the peer median.Open Payments
Industry payments received
All-time total
$868
Transactions
39
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 6 | $167.82 | |
| AstraZeneca Pharmaceuticals Lp | 3 | $144.22 | |
| Novo Nordisk INC | 8 | $144.18 | |
| Lilly USA, LLC | 6 | $116.88 | |
| Pfizer INC. | 4 | $55.05 | |
| GlaxoSmithKline, LLC. | 3 | $53.49 | |
| Axsome Therapeutics, INC. | 1 | $27.62 | |
| Recor Medical INC | 1 | $25.73 | |
| Esperion Therapeutics, INC. | 1 | $22.75 | |
| Exact Sciences Corporation | 1 | $21.83 | |
| Ironshore Pharmaceuticals INC. | 1 | $18.97 | |
| Abbott Laboratories | 1 | $17.84 | |
| Amgen INC. | 1 | $17.62 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 1 | $17.28 | |
| Tris Pharma INC | 1 | $16.55 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,838
Patients
821
Total drug cost
$34,404
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 417 | 122 | $4,562 |
| Lisinopril | Generic | 302 | 88 | $2,192 |
| Amlodipine Besylate | Generic | 250 | 77 | $1,716 |
| Omeprazole | Generic | 237 | 76 | $3,534 |
| Levothyroxine Sodium | Generic | 232 | 66 | $3,533 |
| Rosuvastatin Calcium | Generic | 201 | 61 | $3,603 |
| Losartan Potassium | Generic | 198 | 60 | $3,176 |
| Hydrochlorothiazide | Generic | 171 | 47 | $612 |
| Alprazolam | Generic | 150 | 35 | $899 |
| Metformin Hcl ER (Metformin Hcl) | Brand | 124 | 35 | $2,003 |
Hospital affiliations
Frequently asked questions
What is Dr. Kent Alexander Cassmeyer's medical specialty?
Dr. Kent Alexander Cassmeyer practices Internal Medicine Physician in O Fallon, MO.
Where does Dr. Kent Alexander Cassmeyer practice?
Dr. Kent Alexander Cassmeyer practices at 300 Winding Woods Dr Ste 214, O Fallon, MO 633664773. Office phone: 6366143289.
What is Dr. Kent Alexander Cassmeyer's NPI?
Dr. Kent Alexander Cassmeyer's National Provider Identifier (NPI) is 1417307505, issued by NPPES.
Does Dr. Kent Alexander Cassmeyer accept Medicare assignment?
Yes. Dr. Kent Alexander Cassmeyer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Kent Alexander Cassmeyer commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.