Gregory Ellis, OD
NPI 1629105622 · Optometrist · Boulder, CO
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Ellis, OD is a Optometrist provider in Boulder, CO (NPI 1629105622).
Provider details
- NPI number
- 1629105622
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
- License
- 2078 (CO)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 510 | 181 |
| Timolol Maleate | 168 | 65 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 111 | 33 |
| Cyclosporine | 92 | 33 |
| Brimonidine Tartrate | 47 | 24 |
| Dorzolamide Hcl | 33 | — |
| Prednisolone Acetate | 31 | 20 |
| Fluorometholone | 27 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-27
- Last updated
- 2021-06-07
- Certified
- 2021-06-07
Frequently asked questions
- What is Gregory Ellis's NPI number?
- Gregory Ellis's National Provider Identifier (NPI) is 1629105622, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Ellis's specialty?
- Gregory Ellis is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Gregory Ellis located?
- Gregory Ellis's practice location on file with NPPES is 580 Mohawk Dr, Boulder, CO 80303-3712.
- What is Gregory Ellis's phone number?
- The practice phone number listed in the NPPES registry for Gregory Ellis is (303) 338-4545.
- Does Gregory Ellis accept Medicare?
- Gregory Ellis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Ellis's NPI active?
- Yes — Gregory Ellis's NPI (1629105622) is active in the NPPES registry as of the last update on 2021-06-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.