William May, M.D.
NPI 1700841046 · Ophthalmology Physician · Loma Linda, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William May, M.D. is a Ophthalmology Physician provider in Loma Linda, CA (NPI 1700841046).
Provider details
- NPI number
- 1700841046
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 18490 (NV)
Specialties & taxonomies
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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
878 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 287 | $89 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 251 | $125 |
| Closure of Tear Duct Opening Using Plug68761 | 70 | $158 |
| Imaging of Optic Nerve92133 | 69 | $34 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 69 | $164 |
| Exam of Visual Field With Extended Testing92083 | 55 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 207 | 51 |
| Erythromycin Basebrand: Erythromycin | 82 | 33 |
| Cyclosporinebrand: Restasis | 69 | 21 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 46 | 18 |
| Prednisolone Acetate | 43 | 27 |
| Bimatoprostbrand: Lumigan | 40 | — |
| Moxifloxacin Hclbrand: Moxifloxacin | 30 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$953 across 19 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 (3)
- 10424 S Eastern Ave Ste 100Henderson, NV 89052-4293Phone: (702) 733-2020
- 2110 E Flamingo Rd Ste 210Las Vegas, NV 89119-5193Phone: (702) 733-2020
- 2555 Box Canyon DrLas Vegas, NV 89128-0429Phone: (702) 733-2020
Registry dates
- Enumerated
- 2006-04-19
- Last updated
- 2024-12-19
- Certified
- 2024-12-19
Frequently asked questions
- What is William May's NPI number?
- William May's National Provider Identifier (NPI) is 1700841046, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William May's specialty?
- William May is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is William May located?
- William May's practice location on file with NPPES is 11370 Anderson St Ste 1800, Loma Linda, CA 92354-3450.
- What is William May's phone number?
- The practice phone number listed in the NPPES registry for William May is (909) 558-2154.
- Does William May accept Medicare?
- William May is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William May's NPI active?
- Yes — William May's NPI (1700841046) is active in the NPPES registry as of the last update on 2024-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.