Doctor profile · Federal record
Dr. Irina Kolomey, D.O.
Internal Medicine Physician (CMS: Internal Medicine) · Hospice and Palliative Medicine (Internal Medicine) Physician · Obesity Medicine (Preventive Medicine) Physician · Walnut Creek, CA
- NPI 1104062173
- Accepts Medicare
- 19 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1804 San Miguel Dr
Walnut Creek, CA 945968606
(925) 363-3395
fax (877) 569-2007 - Additional location
-
2350 Country Hills Dr Ste B
Antioch, CA 945097436
Credentials & registration
- NPI registered
- December 2008 — 18 yrs on file
- Profile last updated
- November 17, 2025
- Year of graduation
- 2007 — 19 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #20A10625
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1104062173. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,031
Distinct HCPCS
10
Medicare allowed
$216,149
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99490 |
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 566 | 65 | $74 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 400 | 183 | $152 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 236 | 80 | $134 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 136 | 86 | $109 | |
99441 |
Telephone medical discussion with physician, 5-10 minutes | 98 | 63 | $69 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 74 | 62 | $106 | |
G0442 |
Annual alcohol misuse screening, 5 to 15 minutes | 72 | 72 | $24 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 71 | 71 | $154 | |
G0444 |
Annual depression screening, 5 to 15 minutes | 68 | 68 | $24 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 43 | 41 | $196 |
In context: peer comparison
Among 44 peers in this city , average services per provider: 260. This provider delivers 7.8× the peer median.Open Payments
Industry payments received
All-time total
$812
Transactions
25
Manufacturers
11
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Lilly USA, LLC | 6 | $151.35 | |
| Phathom Pharmaceuticals, Inc. | 1 | $137.06 | |
| ABBVIE INC. | 1 | $124.99 | |
| GlaxoSmithKline, LLC. | 5 | $122.30 | |
| AstraZeneca Pharmaceuticals LP | 4 | $106.10 | |
| Bayer Healthcare Pharmaceuticals Inc. | 3 | $69.45 | |
| Astellas Pharma US Inc | 1 | $23.89 | |
| Electromed, Inc. | 1 | $21.64 | |
| Amgen Inc. | 1 | $21.00 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 1 | $17.91 | |
| Exact Sciences Corporation | 1 | $16.73 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,752
Patients
810
Total drug cost
$266,002
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 454 | 141 | $7,155 |
| Amlodipine Besylate | Generic | 277 | 80 | $3,522 |
| Lisinopril | Generic | 226 | 70 | $3,877 |
| Levothyroxine Sodium | Generic | 225 | 63 | $3,634 |
| Metformin Hcl | Generic | 219 | 72 | $3,408 |
| Gabapentin | Generic | 172 | 45 | $7,912 |
| Ozempic (Semaglutide) | Brand | 165 | 32 | $220,822 |
| Trazodone Hcl | Generic | 163 | 42 | $2,841 |
| Losartan Potassium | Generic | 145 | 47 | $2,162 |
| Hydrochlorothiazide | Generic | 141 | 43 | $693 |
Frequently asked questions
What is Dr. Irina Kolomey's medical specialty?
Dr. Irina Kolomey practices Internal Medicine Physician in Walnut Creek, CA.
Where does Dr. Irina Kolomey practice?
Dr. Irina Kolomey practices at 1804 San Miguel Dr, Walnut Creek, CA 945968606. Office phone: 9253633395.
What is Dr. Irina Kolomey's NPI?
Dr. Irina Kolomey's National Provider Identifier (NPI) is 1104062173, issued by NPPES.
Does Dr. Irina Kolomey accept Medicare assignment?
Yes. Dr. Irina Kolomey accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Irina Kolomey commonly perform?
Top Medicare-reported procedures in 2023: Chronic care management services (HCPCS 99490); Established patient office or other outpatient visit (HCPCS 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.