Physician Profile
Unclaimed ProfileAbout MAY
Based in Loma Linda, CA, William N. May, M.D. is listed in the NPI registry under ophthalmology. William graduated from University of California, Davis School of Medicine in 1984. According to Medicare claims data, William cared for 718 Medicare patients across 878 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (909) 558-2154
- Email not available
Practice Locations
11370 ANDERSON ST STE 1800
Loma Linda, CA 92354
Procedures Most Often Billed to Medicare
878 services · 718 patients · 10 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Closure of tear duct opening using plug | Procedure | 68761 |
70 |
| Placement of amniotic membrane on eye surface for wound healing | Procedure | 65778 |
18 |
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
14 |
| Imaging of optic nerve | Treatment | 92133 |
69 |
| Exam of visual field with extended testing | Treatment | 92083 |
55 |
| Imaging of retina | Treatment | 92134 |
29 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
287 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
251 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
69 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
16 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other ophthalmology specialists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 32 related providers in 4 groups
Other ophthalmology specialists in Loma Linda 8
Same specialty, same city.
Trained at University of California, Davis School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1984 at University of California, Davis School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Closure of tear duct opening using plug 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. May specialize in?
Dr. May is an ophthalmology in Loma Linda, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPHTHALMOLOGY”.
NPI registry
Where is Dr. May located?
Dr. May is listed at 11370 ANDERSON ST STE 1800, Loma Linda, CA 92354. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. May's phone number?
The number on file is (909) 558-2154. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. May's NPI number?
Dr. May's National Provider Identifier is 1700841046. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. May go to medical school?
Dr. May attended University of California, Davis School of Medicine, graduating in 1984. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. May been practicing?
Dr. May has 42 years experience. Calculated from a graduation year of 1984, reported in the CMS National Downloadable File.
CMS public data
What does Dr. May do most often?
According to Medicare billing data, Dr. May performs procedures including closure of tear duct opening using plug, placement of amniotic membrane on eye surface for wound healing and removal of recurring cataract in lens capsule using a laser; provides treatments such as imaging of optic nerve and exam of visual field with extended testing, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. May confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. May. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.