Physician Profile
Unclaimed ProfileAbout MAROHN
Based in Saint Joseph, MI, John W. Marohn, O.D. is listed in the NPI registry under optometry. John graduated from Ferris State College - College of Optometry in 1991. John is also listed as specialising in optometrist.
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
Common questions
What does Dr. Marohn specialise in?
Dr. Marohn is an optometry in Saint Joseph, MI. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPTOMETRY”.
NPI registry
Where is Dr. Marohn located?
Dr. Marohn is listed at 2848 NILES RD, Saint Joseph, MI 49085. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Marohn's phone number?
The number on file is (269) 428-3300. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Marohn?
Dr. Marohn's National Provider Identifier is 1548265879. 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. Marohn go to medical school?
Dr. Marohn attended Ferris State College - College of Optometry, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Marohn have?
Dr. Marohn has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Marohn do most often?
According to Medicare billing data, Dr. Marohn performs imaging including ultrasound scan of cornea to determine thickness; provides treatments such as established patient complete exam of visual system and imaging of optic nerve, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Marohn's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Marohn. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (269) 428-3300
- Email not available
Practice Locations
2848 NILES RD
Saint Joseph, MI 49085
Procedures Most Often Billed to Medicare
1,137 services · 1,056 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
78 |
| Established patient complete exam of visual system | Treatment | 92014 |
468 |
| Imaging of optic nerve | Treatment | 92133 |
163 |
| Exam of visual field with extended testing | Treatment | 92083 |
98 |
| Imaging of retina | Treatment | 92134 |
97 |
| New patient complete exam of visual system | Treatment | 92004 |
49 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
161 |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
23 |
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 optometry specialists at this location 5
Same specialty, same street address — most likely the same department or group.
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.
Other optometry specialists in Saint Joseph 4
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Ferris State College - College of Optometry 8
Other providers in the same specialty who trained at the same institution.
Class of 1991 at Ferris State College - College of Optometry 8
Providers who graduated from the same medical school in the same year.
Also performs Ultrasound scan of cornea to determine thickness 8
Providers in MI who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.