Irina Kolomey, D.O.
NPI 1104062173 · Internal Medicine Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irina Kolomey, D.O. is a Internal Medicine Physician provider in Walnut Creek, CA (NPI 1104062173).
Provider details
- NPI number
- 1104062173
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 20A10625 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,283 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 461 | $18 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 369 | $151 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 102 | $72 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 89 | $108 |
| Face-To-Face Behavioral Counseling for Obesity, 15 MinutesG0447 | 71 | $29 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 73 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 205 | 91 |
| Amlodipine Besylate | 167 | 64 |
| Lisinopril | 140 | 53 |
| Metformin Hcl | 119 | 52 |
| Levothyroxine Sodium | 116 | 50 |
| Losartan Potassium | 78 | 36 |
| Metoprolol Succinate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$812 across 25 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 2350 Country Hills Dr Ste BAntioch, CA 94509-7436Phone: (925) 363-3395Fax: (877) 569-2007
Registry dates
- Enumerated
- 2008-12-22
- Last updated
- 2025-11-17
- Certified
- 2025-11-17
Frequently asked questions
- What is Irina Kolomey's NPI number?
- Irina Kolomey's National Provider Identifier (NPI) is 1104062173, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irina Kolomey's specialty?
- Irina Kolomey is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Irina Kolomey located?
- Irina Kolomey's practice location on file with NPPES is 1804 San Miguel Dr, Walnut Creek, CA 94596-8606.
- What is Irina Kolomey's phone number?
- The practice phone number listed in the NPPES registry for Irina Kolomey is (925) 363-3395.
- Does Irina Kolomey accept Medicare?
- Irina Kolomey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Irina Kolomey's NPI active?
- Yes — Irina Kolomey's NPI (1104062173) is active in the NPPES registry as of the last update on 2025-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.