Office listed in NPPES
1600 23Rd Ave, Greeley, CO 80634
(970) 356-2424
Confirm this address and number with the practice. Registry information may be outdated.
Physician registry profile
DO · Greeley, CO
1600 23Rd Ave, Greeley, CO 80634
(970) 356-2424
Confirm this address and number with the practice. Registry information may be outdated.
Confirm current services, ages treated, insurance, location, hospital affiliations and appointment availability directly with the practice. An active NPI does not verify current licensure, certification or practice status.
A registry specialty label does not establish that a clinician currently provides the particular care you need.
Source: CMS Doctors and Clinicians and Hospital General Information. An affiliation does not confirm current privileges or the services offered there.
In 2025, drug and medical-device companies reported $26.85 in general payments to Brian Leonard (1 payment). Largest: Exact Sciences Corporation ($26.85). Research funding is excluded. These payments are public under the Sunshine Act, and a payment does not by itself mean a conflict of interest. CMS Open Payments
2024 Medicare-billed services:
Reporting year: 2024. These are billed services or units in Original Medicare Part B, not total career experience, all patients, surgical case counts or a quality rating.
Scroll the table sideways to see every column.
| HCPCS | Billed services / units | Beneficiaries in this row | Service description (English) | Billing setting |
|---|---|---|---|---|
| 36415 | 82 | 64 | Insertion of needle into vein for collection of blood sample | Non-facility |
| 83036 | 20 | 15 | Hemoglobin a1c level | Non-facility |
| 99213 | 77 | 63 | Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Non-facility |
| 99214 | 80 | 50 | Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Non-facility |
| G0008 | 16 | 16 | Administration of influenza virus vaccine | Non-facility |
| G0439 | 64 | 64 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Non-facility |
Drug units follow the billing-code definition. They are not the number of treatments, visits, doses or unique patients.
Scroll the table sideways to see every column.
| HCPCS | Drug billing units | Beneficiaries in this row | Service description (English) | Billing setting |
|---|---|---|---|---|
| 90662 | 13 | 13 | Influenza vaccine split virus, preservative free | Non-facility |
CMS suppresses provider/service rows involving fewer than 11 beneficiaries. Services may repeat for one person, and beneficiaries cannot be added across rows. Facility/non-facility describes billing and does not establish a current hospital affiliation. These counts do not report case complexity, clinical outcomes or whether a treatment is appropriate for you.
Exact CMS source rows for this NPI · Checked 2026-11-03
The NPPES registry lists 1600 23Rd Ave, Greeley, CO 80634. Confirm the location before your visit; registry addresses can be out of date. The registry entry was last updated in 2013; Medicare’s current enrollment lists 1181 E 120Th Ave Unit A Thornton Clinic, Thornton, CO 80233.
The registry lists (970) 356-2424. Practices sometimes change numbers; check the practice website if the call does not connect. Medicare lists (303) 673-1500 for this physician’s office.
The registry lists Family medicine. A registry specialty is self-reported and does not confirm board certification or the services offered today.
CMS data shows publicly disclosed Original Medicare Part B services billed in 2024 (see above). That does not confirm the practice is accepting new Medicare patients; ask the office.
NPI 1265683098, a public identifier from the national registry. It does not by itself confirm a current license.
Medicare records list Good Samaritan Medical Center LLC (Lafayette, CO); Centura Health-St Anthony North Health Campus (Westminster, CO). An affiliation does not confirm current privileges.
CMS records do not indicate telehealth services. Ask the office which visits can be done remotely.
Reviews are moderated before publication, and negative reviews are published on the same terms as positive ones. Ratings describe reported patient experience, not clinical quality.