Physician Profile
Unclaimed ProfileAbout MASON
Based in Waterloo, IA, Benjamin L Mason, M.D.. is listed in the NPI registry under ophthalmology. Benjamin graduated from University of Iowa, Rj & L Carver College of Medicine in 2001. Benjamin is also listed as specializing in ophthalmology — glaucoma. According to Medicare claims data, Benjamin cared for 4,429 Medicare patients across 6,287 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
- (319) 287-5890
- Email not available
Practice Locations
999 HOME PLZ
Waterloo, IA 50701
Procedures Most Often Billed to Medicare
6,287 services · 4,429 patients · 19 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
1,104 |
| Complex removal of cataract with insertion of prosthetic lens | Procedure | 66982 |
230 |
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
191 |
| Laser repair to improve eye fluid flow | Procedure | 65855 |
62 |
| Extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye | Procedure | 66991 |
34 |
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
67 |
| Measurement of corneal curvature and depth of eye | Treatment | 92136 |
1,204 |
| Established patient complete exam of visual system | Treatment | 92014 |
800 |
| Imaging of optic nerve | Treatment | 92133 |
597 |
| Exam of visual field with extended testing | Treatment | 92083 |
502 |
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 3
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 — 26 related providers in 4 groups
Other ophthalmology specialists in Waterloo 3
Same specialty, same city.
Trained at University of Iowa, Rj & L Carver College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2001 at University of Iowa, Rj & L Carver College of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Removal of cataract with insertion of prosthetic lens 8
Providers in IA who bill this service to Medicare most often.
Common questions
What does Dr. Mason specialize in?
Dr. Mason is an ophthalmology in Waterloo, IA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPHTHALMOLOGY”.
NPI registry
Where is Dr. Mason located?
Dr. Mason is listed at 999 HOME PLZ, Waterloo, IA 50701. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Mason's phone number?
The number on file is (319) 287-5890. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Mason's NPI number?
Dr. Mason's National Provider Identifier is 1457301442. 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. Mason go to medical school?
Dr. Mason attended University of Iowa, Rj & L Carver College of Medicine, graduating in 2001. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Mason been practicing?
Dr. Mason has 25 years experience. Calculated from a graduation year of 2001, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Mason do most often?
According to Medicare billing data, Dr. Mason performs procedures including removal of cataract with insertion of prosthetic lens, complex removal of cataract with insertion of prosthetic lens and removal of recurring cataract in lens capsule using a laser; reads or performs imaging such as ultrasound scan of cornea to determine thickness; provides treatments such as measurement of corneal curvature and depth of eye and established patient complete exam of visual system, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Mason confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mason. 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.