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Dr. John M Graether , MD

Ophthalmology • Marshalltown, IA

Active NPI 1902898794 Individual Practitioner Male Practitioner
Practice location in NPPES

309 E Church St
Marshalltown, IA 501582946

Call 6417546200 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

309 E Church St

Marshalltown, IA 501582946

Telephone 6417546200
Organization at the Same NPPES Address or Phone
Wolfe Clinic Eye Centers Lc Facility NPI 1720067424

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

30-day fills

258 standardized 30-day fills in 2014

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$19,038 in 2014

The total cost of these prescriptions in 2014, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2014.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $553.88 in 2023

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2023.

Guide: How to read an Open Payments record

NPI first issued

2005

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Compared with the same specialty in Marshalltown and Iowa

Billing and prescribing volume is not a quality rating.

Medicare Part D

Comparisons use 2024 data. The latest CMS data for Dr. Graether are from 2014.

4 active clinicians are listed under Ophthalmology with a practice address in Marshalltown, IA (221 in Iowa).

Addresses are self-reported to NPPES and may be out of date.

Sources: CMS Medicare Part D Prescribers (2014), CMS Open Payments (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2023
Disclosure Year:

Program year 2023 (payments made January 1 – December 31, 2023): fewer than 11 records totaling $553.88.

Manufacturer Payment Nature Product Type Amount ($)
Katena Products, Inc.
Royalty or License
Cash or cash equivalent
— General $553.88

Source: CMS Open Payments, program year 2023, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2014.

CMS Part D · Data Year 2014
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Latanoprost Latanoprost 61 1,918 $845.14 17
Travatan Z Travoprost 38 1,155 $4,927.24 —
Lumigan Bimatoprost 28 849 $3,745.55 —
Timolol Maleate Timolol Maleate 28 1,126 $457.05 11
Restasis Cyclosporine 19 480 $6,029.74 —
Brimonidine Tartrate Brimonidine Tartrate 18 544 $1,021.22 —
Combigan Brimonidine Tartrate/Timolol 16 544 $1,654.13 —
Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat 16 615 $357.74 —

Source: CMS Part D by Provider and Drug, 2014; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Ophthalmology Primary Specialty

NUCC Taxonomy Code: 207W00000X

License # reported to NPPES IA 16441

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Iowa State Medical Licensing Board.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Other Identifier Railroad Medicare
180011427 (IA)

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

6 listed
NPI 1104818996

Doctor of Medicine (M.D.)

NPI 1215124706

Doctor of Medicine (M.D.)

NPI 1568454379

Doctor of Optometry

NPI 1760942833

Doctor of Medicine (M.D.)

NPI 1104818939

Doctor of Medicine (M.D.)

Dr. Eric Zhang , MD

Ophthalmology

NPI 1952965493

Doctor of Medicine (M.D.)

Career & Practice History

NPI enumerated August 17, 2005.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1902898794
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: August 17, 2005
Last Update: June 13, 2008
Sole Proprietor: No

Other Ophthalmology Specialists in Marshalltown

Healthcare providers in Marshalltown

Mailing Address

309 E Church St

Marshalltown, IA 501582946

Phone: 6417546200

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.