Active NPI 1548265879 Individual Practitioner Male Practitioner

Dr. John W. Marohn , OD

Optometrist • Saint Joseph, MI

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. John Marohn, OD is a certified Optometrist practicing in Saint Joseph, MI. With approximately 35 years of clinical experience since graduating from Ferris State College - College Of Optometry in 1991, Dr. Marohn delivers high-quality medical care to the local community at 2848 NILES RD.

Dr. Marohn is affiliated with Great Lakes Eye Care Pc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient complete exam of visual system, imaging of optic nerve, established patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

2848 Niles Rd

Saint Joseph, MI 490853352

Telephone 2694283300

Fax 2694285005

Associated Practice Facility / Clinic

🏢 Great Lakes Eye Care Pc Facility NPI 1922002708

Medicare Profile & Education

Medical School

Ferris State College - College Of Optometry

Graduation Year

1991

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Optometrist in Saint Joseph, MI

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

35 Yrs +19.7 yrs vs City Avg

City Avg: 15.3 Yrs

State Avg: 21.1 Yrs

Regional Practice Density

22 Specialists

Practicing in Saint Joseph, MI (2032 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

52.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Marohn (35 Years) 35 Yrs

Saint Joseph Specialty Average (15.3 Years) 15.3 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	468	457	$216.00	$116.46
92133 Imaging of optic nerve	163	146	$80.00	$33.57
99213 Established patient office or other outpatient visit, typically 15 minutes	161	131	$155.00	$84.68
92083 Exam of visual field with extended testing	98	82	$110.00	$57.88
92134 Imaging of retina	97	94	$80.00	$36.82
76514 Ultrasound scan of cornea to determine thickness	78	77	$130.00	$10.16
92004 New patient complete exam of visual system	49	49	$260.00	$133.87
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	23	20	$85.00	$53.35

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	341	339	$216.00	$120.25
99213 Established patient office or other outpatient visit, typically 15 minutes	224	217	$155.00	$86.70
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	115	83	$85.00	$54.29
92133 Imaging of optic nerve	111	106	$80.00	$34.86
92134 Imaging of retina	73	70	$80.00	$38.30
92083 Exam of visual field with extended testing	55	51	$110.00	$58.91
92012 Established patient problem focused exam of visual system	32	30	$150.00	$85.40
76514 Ultrasound scan of cornea to determine thickness	26	26	$130.00	$10.45
92004 New patient complete exam of visual system	20	20	$260.00	$142.76
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	15	15	$185.00	$103.33

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	292	288	$215.55	$119.92
99213 Established patient office or other outpatient visit, typically 15 minutes	158	151	$147.54	$87.33
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	111	88	$82.23	$54.05
92133 Imaging of optic nerve	64	60	$80.00	$34.95
92134 Imaging of retina	52	49	$80.00	$38.20
92083 Exam of visual field with extended testing	47	43	$110.00	$58.87
92012 Established patient problem focused exam of visual system	33	31	$151.45	$84.64
92004 New patient complete exam of visual system	18	18	$260.00	$142.63
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	17	15	$35.00	$21.85

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	403	398	$216.00	$121.51
99213 Established patient office or other outpatient visit, typically 15 minutes	249	245	$92.76	$87.94
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	81	62	$56.90	$54.11
92133 Imaging of optic nerve	73	72	$80.00	$35.58
92134 Imaging of retina	68	66	$80.00	$39.14
92083 Exam of visual field with extended testing	48	43	$110.00	$60.09
92012 Established patient problem focused exam of visual system	41	40	$166.00	$85.92
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	18	18	$35.00	$21.56
92004 New patient complete exam of visual system	15	15	$260.00	$144.68

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	399	398	$216.00	$121.62
99213 Established patient office or other outpatient visit, typically 15 minutes	293	292	$90.00	$72.89
92133 Imaging of optic nerve	86	83	$80.00	$35.94
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	78	64	$55.00	$43.97
92083 Exam of visual field with extended testing	45	40	$110.00	$60.57
92134 Imaging of retina	35	34	$80.00	$37.82
92012 Established patient problem focused exam of visual system	35	35	$166.00	$85.45
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	25	23	$35.00	$22.11

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	409	406	$211.75	$121.19
99213 Established patient office or other outpatient visit, typically 15 minutes	369	368	$90.00	$71.44
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	104	82	$55.00	$43.06
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	90	90	$149.00	$105.09
92083 Exam of visual field with extended testing	71	67	$110.00	$60.09
92133 Imaging of optic nerve	61	61	$80.00	$35.14
92134 Imaging of retina	43	43	$80.00	$39.10
92012 Established patient problem focused exam of visual system	37	37	$166.00	$84.09
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	22	21	$35.00	$21.51
92004 New patient complete exam of visual system	14	14	$257.86	$138.32
76514 Ultrasound scan of cornea to determine thickness	12	12	$130.00	$11.72
92025 Ct scan of cornea	12	12	$70.00	$35.87

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	428	426	$149.00	$99.88
92014 Established patient complete exam of visual system	353	351	$201.46	$117.36
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	88	77	$55.00	$40.69
99213 Established patient office or other outpatient visit, typically 15 minutes	52	51	$90.00	$68.28
92133 Imaging of optic nerve	52	52	$80.00	$35.12
92083 Exam of visual field with extended testing	35	33	$87.37	$58.96
92012 Established patient problem focused exam of visual system	35	35	$166.00	$81.16
92134 Imaging of retina	25	25	$80.00	$38.52
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	23	22	$35.00	$19.83
92004 New patient complete exam of visual system	16	16	$250.00	$140.91

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	449	448	$112.99	$99.01
92014 Established patient complete exam of visual system	316	316	$133.92	$109.87
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	86	74	$47.56	$40.31
99213 Established patient office or other outpatient visit, typically 15 minutes	62	59	$70.87	$63.06
92083 Exam of visual field with extended testing	43	41	$77.00	$58.94
92133 Imaging of optic nerve	41	41	$80.00	$34.63
92012 Established patient problem focused exam of visual system	34	34	$91.06	$74.87
92134 Imaging of retina	30	30	$80.00	$36.84
92004 New patient complete exam of visual system	18	18	$168.33	$137.95
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	14	14	$30.71	$18.52

Medical Specialties & State Licenses

CMS Verified: 2023-01-26

Optometrist Primary Specialty

NUCC Taxonomy Code: 152W00000X

State License MI 4901003578

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

3186238 (MI)

Hospital & Practice Group Affiliations

Great Lakes Eye Care Pc

2848 Niles Rd, Saint Joseph, MI 490853352

Phone: 2694283300

Secondary Practice Locations

120 Longmeadow Village Dr

Niles, MI 491207808

Phone: 2696846400

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

13 Associated Practitioners

Dr. Benjamin Nicholson , MD, MA

Ophthalmology - Retina Specialist

NPI 1003016916

Doctor of Medicine (M.D.), Master of Arts

Dr. Nicholas Keinath , OD

Optometrist

NPI 1124886460

Doctor of Optometry

Dr. Jenna Stoddard , OD

Optometrist

NPI 1184101602

Doctor of Optometry

Dr. Daniel Van Elk , OD

Optometrist

NPI 1194216937

Doctor of Optometry

Dr. David Brown , MD

Ophthalmology

NPI 1265437370

Doctor of Medicine (M.D.)

Dr. Duane Tolsma , OD

Optometrist

NPI 1306841630

Doctor of Optometry

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

11 Historical Events

✅

NPI Profile Active March 10, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location March 10, 2017

Registered at 2848 NILES RD, SAINT JOSEPH, MI 490853352 (Tel: 2694283300)

📍

Updated Business Mailing Address March 10, 2017

Registered at 2848 NILES RD, SAINT JOSEPH, MI 490853352 (Tel: 2694283300)

👤

Provider Name / Credentials Updated March 10, 2017

Recorded as JOHN MAROHN, O.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 10, 2017

Optometrist (License #4901003578 in MI)

✅

NPI Profile Active October 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location October 08, 2007

Registered at 2848 NILES RD, SAINT JOSEPH, MI 490853352 (Tel: 2694283300)

📍

Updated Business Mailing Address October 08, 2007

Registered at 2848 NILES RD, SAINT JOSEPH, MI 490853352 (Tel: 2694283300)

👤

Provider Name / Credentials Updated October 08, 2007

Recorded as JOHN MAROHN, O.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 08, 2007

Optometrist (License #4901003578 in MI)

🟢

Initial NPI Registration & Enumeration June 14, 2005

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1548265879

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: June 14, 2005

Last Update: January 26, 2023

Sole Proprietor: No

Update or Correct Profile

Mailing Address

2848 Niles Rd

Saint Joseph, MI 490853352

Phone: 2694283300

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.