Gregory Koo, MD
NPI 1205895943 · General Practice Physician · Lexington, KY
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Koo, MD is a General Practice Physician provider in Lexington, KY (NPI 1205895943).
Provider details
- NPI number
- 1205895943
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 33614 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 138 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omega-3 Acid Ethyl Esters | 496 | 134 |
| Atorvastatin Calcium | 304 | 91 |
| Amlodipine Besylate | 252 | 68 |
| Lisinopril | 252 | 67 |
| Omeprazole | 244 | 67 |
| Potassium Chloride | 230 | 55 |
| Levothyroxine Sodium | 229 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$167 across 9 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)
- 576 E Third St Ste 170Lexington, KY 40508-2251Phone: (859) 288-2425Fax: (859) 288-7510
Registry dates
- Enumerated
- 2006-03-21
- Last updated
- 2025-07-15
- Certified
- 2025-07-15
Frequently asked questions
- What is Gregory Koo's NPI number?
- Gregory Koo's National Provider Identifier (NPI) is 1205895943, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Koo's specialty?
- Gregory Koo is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Koo located?
- Gregory Koo's practice location on file with NPPES is 1401 Harrodsburg Rd Ste B165, Lexington, KY 40504-1726.
- What is Gregory Koo's phone number?
- The practice phone number listed in the NPPES registry for Gregory Koo is (859) 288-2425.
- Does Gregory Koo accept Medicare?
- Gregory Koo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Koo's NPI active?
- Yes — Gregory Koo's NPI (1205895943) is active in the NPPES registry as of the last update on 2025-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.