Doctor profile · Federal record
Dr. Marjorie Guthrie, M.D.
Family Medicine Physician (CMS: Family Practice) · O Fallon, IL
- NPI 1366490146
- Accepts Medicare
- 24 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3 Saint Elizabeth Blvd Ste 4000
O Fallon, IL 622691284
(618) 233-5480
fax (618) 222-4790
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- March 10, 2026
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- Illinois #036113851
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1366490146. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
160
Distinct HCPCS
4
Medicare allowed
$13,657
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 62 | 24 | $79 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 43 | 41 | $131 | |
99238 |
Hospital discharge day management, 30 minutes or less | 36 | 36 | $81 | |
83036 |
Hemoglobin a1c level | 19 | 17 | $10 |
In context: peer comparison
Among 10 peers in this city , average services per provider: 68. This provider delivers 2.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,002
Patients
146
Total drug cost
$148,697
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 147 | 27 | $3,699 |
| Atorvastatin Calcium | Generic | 88 | 24 | $1,557 |
| Lisinopril | Generic | 75 | 16 | $597 |
| Trulicity (Dulaglutide) | Brand | 73 | 0 | $97,050 |
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 72 | 11 | $1,094 |
| Gabapentin | Generic | 70 | 16 | $2,450 |
| Metformin Hcl | Generic | 70 | 13 | $738 |
| Levothyroxine Sodium | Generic | 62 | 16 | $914 |
| Buprenorphine-Naloxone (Buprenorphine Hcl/Naloxone Hcl) | Brand | 59 | 0 | $8,246 |
| Cyclobenzaprine Hcl | Generic | 52 | 0 | $662 |
Frequently asked questions
What is Dr. Marjorie Guthrie's medical specialty?
Dr. Marjorie Guthrie practices Family Medicine Physician in O Fallon, IL.
Where does Dr. Marjorie Guthrie practice?
Dr. Marjorie Guthrie practices at 3 Saint Elizabeth Blvd Ste 4000, O Fallon, IL 622691284. Office phone: 6182335480.
What is Dr. Marjorie Guthrie's NPI?
Dr. Marjorie Guthrie's National Provider Identifier (NPI) is 1366490146, issued by NPPES.
Does Dr. Marjorie Guthrie accept Medicare assignment?
Yes. Dr. Marjorie Guthrie accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Marjorie Guthrie commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); Hospital discharge day management (HCPCS 99238). Source: CMS Medicare Physician & Other Practitioners file.