Doctor profile · Federal record
Dr. Margaret Njonjo, M.D.
Geriatric Medicine (Internal Medicine) Physician (CMS: Internal Medicine) · Internal Medicine Physician · Eugene, OR
- NPI 1427239334
- Accepts Medicare
- 21 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4010 Aerial Way, Community Geriatrics
Eugene, OR 974029757
(541) 242-8300 - Mailing address
-
Po Box 24410
Eugene, OR 974020451
Credentials & registration
- NPI registered
- November 2007 — 19 yrs on file
- Profile last updated
- September 21, 2010
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 207RG0300X — NUCC code
- State license (1)
- Oregon #MD150253
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1427239334. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
651
Distinct HCPCS
7
Medicare allowed
$70,181
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 297 | 166 | $93 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 100 | 100 | $124 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 88 | 68 | $135 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 82 | 69 | $63 | |
G0438 |
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | 39 | 39 | $158 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 26 | 26 | $173 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 19 | 19 | $128 |
In context: peer comparison
Among 1 peers in Eugene Geriatric Medicine (Internal Medicine) Physician, average services per provider: 93. This provider delivers 7.0× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
4,346
Patients
1,123
Total drug cost
$277,829
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 569 | 126 | $11,665 |
| Atorvastatin Calcium | Generic | 494 | 140 | $8,935 |
| Amlodipine Besylate | Generic | 415 | 101 | $3,683 |
| Lisinopril | Generic | 405 | 109 | $4,646 |
| Losartan Potassium | Generic | 373 | 99 | $6,734 |
| Gabapentin | Generic | 307 | 83 | $8,350 |
| Metoprolol Tartrate | Generic | 223 | 55 | $2,382 |
| Omeprazole | Generic | 221 | 67 | $4,253 |
| Metoprolol Succinate | Generic | 216 | 63 | $5,024 |
| Furosemide | Generic | 201 | 55 | $1,455 |
Hospital affiliations
Frequently asked questions
What is Dr. Margaret Njonjo's medical specialty?
Dr. Margaret Njonjo practices Geriatric Medicine (Internal Medicine) Physician in Eugene, OR.
Where does Dr. Margaret Njonjo practice?
Dr. Margaret Njonjo practices at 4010 Aerial Way, Eugene, OR 974029757. Office phone: 5412428300.
What is Dr. Margaret Njonjo's NPI?
Dr. Margaret Njonjo's National Provider Identifier (NPI) is 1427239334, issued by NPPES.
Does Dr. Margaret Njonjo accept Medicare assignment?
Yes. Dr. Margaret Njonjo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Margaret Njonjo 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.