Doctor profile · Federal record
Dr. Diana Negreanu, MD
Specialist (CMS: Endocrinology) · Portland, OR
- NPI 1538282447
- Accepts Medicare
- 35 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5050 Ne Hoyt St Ste 317
Portland, OR 972132982
(503) 256-4096
fax (503) 256-0101
Credentials & registration
- NPI registered
- April 2007 — 19 yrs on file
- Profile last updated
- May 12, 2022
- Year of graduation
- 1991 — 35 yrs since
- Specialty taxonomy
- 174400000X — NUCC code
- State license (1)
- Oregon #LL16507
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1538282447. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
148
Distinct HCPCS
3
Medicare allowed
$20,602
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 85 | 56 | $131 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 35 | 30 | $93 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 28 | 28 | $223 |
In context: peer comparison
Among 11 peers in Portland Specialist, average services per provider: 51. This provider delivers 2.9× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
775
Patients
187
Total drug cost
$174,310
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 185 | 58 | $4,060 |
| Synthroid (Levothyroxine Sodium) | Brand | 122 | 32 | $15,874 |
| Hydrocortisone | Generic | 56 | 13 | $2,922 |
| Methimazole | Generic | 53 | 21 | $1,007 |
| Hydrochlorothiazide | Generic | 46 | 12 | $581 |
| Metformin Hcl | Generic | 45 | 14 | $467 |
| Lantus Solostar (Insulin Glargine,Hum.Rec.Anlog) | Brand | 44 | 11 | $48,383 |
| Liothyronine Sodium | Generic | 37 | 12 | $1,240 |
| Humalog Kwikpen U-100 (Insulin Lispro) | Brand | 34 | 0 | $45,135 |
| Alendronate Sodium | Generic | 31 | 14 | $429 |
Hospital affiliations
Frequently asked questions
What is Dr. Diana Negreanu's medical specialty?
Dr. Diana Negreanu practices Specialist in Portland, OR.
Where does Dr. Diana Negreanu practice?
Dr. Diana Negreanu practices at 5050 Ne Hoyt St Ste 317, Portland, OR 972132982. Office phone: 5032564096.
What is Dr. Diana Negreanu's NPI?
Dr. Diana Negreanu's National Provider Identifier (NPI) is 1538282447, issued by NPPES.
Does Dr. Diana Negreanu accept Medicare assignment?
Yes. Dr. Diana Negreanu accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Diana Negreanu 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); New patient office or other outpatient visit (HCPCS 99205). Source: CMS Medicare Physician & Other Practitioners file.