DR. MICHAEL JOSEPH GREINER (M.D.) – Family Medicine Physician, NPI 1124133640

DR. MICHAEL JOSEPH GREINER (M.D.) is a healthcare provider. based in Fairfield, Iowa. specializing in FAMILY PRACTICE. They hold the professional credentials M.D.. They hold a License No. 26708 (IA). The NPI Number for DR. MICHAEL JOSEPH GREINER (M.D.) is 1124133640

Main info

Male
39 Years Of Experience
Accepts Medicare Assignment
Name
DR. MICHAEL JOSEPH GREINER (M.D.)
NPI
1124133640
Phone
(641) 472-4156
Address
2000B SOUTH MAIN ST
Enumeration Date
21 August 2006
Last Update Date
19 June 2009

Doctor Profile

Medical School Name
UNIVERSITY OF IOWA, RJ & L CARVER COLLEGE OF MEDICINE
Secondary Phone
6414724111
Graduation Year
1987 (39 years ago)
PAC ID
6608839147
Group Practice PAC ID
9335059575
Professional Enrollment ID
I20100709000153
Address ID
IA525569572FA2000XSTXX400
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience52
Completeness75
Years active:19State licenses:1Digital endpointsOther names

1,656 FAMILY PRACTICE in IA

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Provider Addresses for DR. MICHAEL JOSEPH GREINER (M.D.)

  • South Main Street, Fairfield, Jefferson County, Iowa, 52556, United States

    P.O. BOX 1507

    FAIRFIELD, IA 525563740

    Phone: (641) 472-4156

    Fax: (641) 472-9436

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 2 Open Payments records for all available years, with a total value of $98.

Total Amount is formed as General ($98) + Research ($0) + Ownership ($0) = $98.

Last reported payment date: 2024-07-15 • Largest payer in this snapshot: Nevro Corp. ($98).

Total Amount

$98

General + Research + Ownership

Payments

2

Total payment records

General Amount

$98

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-07-15

Latest reported date

Top Companies

Largest payers in this snapshot

CompanyAmount
Nevro Corp.$98
View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 52556)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 9335059575View full group profile
NameSpecialtyState
Physician AssistantIA
Family PracticeIA
-IA
Orthopedic SurgeryIA
Certified Registered Nurse Anesthetist (Crna)IL
Nurse PractitionerIA
Certified Registered Nurse Anesthetist (Crna)IA
Physician AssistantIA
Certified Registered Nurse Anesthetist (Crna)IA
Family PracticeIA

Reviews

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Frequently asked questions

How do I look up DR. MICHAEL JOSEPH GREINER (M.D.) by NPI?
Use NPI 1124133640 when you need to reference DR. MICHAEL JOSEPH GREINER (M.D.) in forms, claims, or directories.
Is DR. MICHAEL JOSEPH GREINER (M.D.)'s NPI currently valid?
The extract we use shows DR. MICHAEL JOSEPH GREINER (M.D.) as active.
What does DR. MICHAEL JOSEPH GREINER (M.D.) treat or focus on?
Patients typically see DR. MICHAEL JOSEPH GREINER (M.D.) under the specialty Family Medicine Physician. Clinical services aligned with this taxonomy classification.
Does DR. MICHAEL JOSEPH GREINER (M.D.) practice in Iowa?
You will see Fairfield, Iowa on file for DR. MICHAEL JOSEPH GREINER (M.D.) alongside any extra practice locations.
Is DR. MICHAEL JOSEPH GREINER (M.D.) a real provider?
This page reflects official NPPES data for NPI 1124133640. Always confirm identity and privileges with the practice and licensing boards.

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