William Waterhouse, MD
NPI 1275536138 · Ophthalmology Physician · Grand Jct, CO
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Waterhouse, MD is a Ophthalmology Physician provider in Grand Jct, CO (NPI 1275536138).
Provider details
- NPI number
- 1275536138
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 33513 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
5,194 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Imaging of Retina92134 | 1,742 | $42 |
| Compounded Drug, Not Otherwise ClassifiedJ7999 | 1,300 | $84 |
| Injection of Drug Into Eye67028 | 1,156 | $125 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 721 | $93 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 102 | $114 |
| Extended Exam of the Back Part of the Eye With Retinal Drawing92201 | 41 | $25 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Erythromycin Basebrand: Erythromycin | 180 | 85 |
| Latanoprost | 175 | 39 |
| Prednisolone Acetate | 120 | 52 |
| Ketorolac Tromethamine | 68 | 11 |
| Brimonidine Tartrate | 48 | — |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 22 | — |
| Timolol Maleate | 19 | — |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-24
- Last updated
- 2013-09-18
Frequently asked questions
- What is William Waterhouse's NPI number?
- William Waterhouse's National Provider Identifier (NPI) is 1275536138, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Waterhouse's specialty?
- William Waterhouse is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is William Waterhouse located?
- William Waterhouse's practice location on file with NPPES is 2478 Patterson Rd, Grand Jct, CO 81505-3605.
- What is William Waterhouse's phone number?
- The practice phone number listed in the NPPES registry for William Waterhouse is (970) 255-7065.
- Does William Waterhouse accept Medicare?
- William Waterhouse is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Waterhouse's NPI active?
- Yes — William Waterhouse's NPI (1275536138) is active in the NPPES registry as of the last update on 2013-09-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.