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DEMI LOUISE O'BRIEN MD
NPI 1700409828
Family Medicine in Greenfield, IA

Active since May 22, 2020PECOS EnrolledAccepts Medicare Assignment
288 PUBLIC SQ, GREENFIELD, IA 50849(641) 743-6529(641) 743-8223 Get Directions Write a Review

NPPES record last updated: February 17, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Feb 17, 2025, Dec 5, 2023, Sep 14, 2021 and 3 more (6 updates tracked since 2020).

About Demi Louise O'brien Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DEMI LOUISE O'BRIEN MD (NPI 1700409828) is an individual family medicine provider in Greenfield, Iowa, licensed in Iowa (MD-50804) and active in the NPI registry since May 2020. She is enrolled in Medicare PECOS, is affiliated with Adair County Memorial Hospital, and is a graduate of Other (2020).

NPPES Registry Identity

NPI1700409828
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameDEMI LOUISE O'BRIENCredential: MD
Location Address288 PUBLIC SQGreenfield, IA 50849-1264
Mailing Address288 Public SqGreenfield, IA 50849-1264 · (641) 743-6529 · Fax (641) 743-8223
Phone(641) 743-6529
Fax(641) 743-8223
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateMay 22, 2020
Last NPPES UpdateFebruary 17, 20256 updates tracked since enumeration
NPPES CertifiedFebruary 17, 2025
✔ NPI 1700409828 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in IA · MD-50804
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
288 PUBLIC SQ, Greenfield, IA 50849
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Demi Louise O'brien Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3274919147
PECOS Enrollment IDI20230525002027
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
78 services37 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
57 services27 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
27 services20 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
12 services11 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Adair County Memorial Hospital

Critical Access Hospitals · Greenfield, IA
OwnershipGovernment - Local
CMS Certification Number161310
Location609 SE KentGreenfield, IA 50849 · Adair County
Emergency services

Greater Regional Medical Center

Critical Access Hospitals · Creston, IA
4/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number161365
Location1700 West Townline StreetCreston, IA 50801 · Union County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 50849 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$81.84 typical visit price
range $52.96 – $161.40
Typical copayment $20.46 (range $13.24 – $40.35)
Most-billed visit code 99203
Established Patient
$94.05 typical visit price
range $16.91 – $131.98
Typical copayment $23.51 (range $4.22 – $32.99)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GREATER REGIONAL MEDICAL CENTER
Clinic/Center (Rural Health)
288 PUBLIC SQ
GREENFIELD, IA 50849
Adair County (641) 782-7091
GREATER REGIONAL MEDICAL CENTER
Clinic/Center (Rural Health)
288 PUBLIC SQ
GREENFIELD, IA 50849
Adair County (641) 782-7091

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Demi O'brien's NPI number?

The NPI number for Demi O'brien is 1700409828. It was assigned to this individual provider in the NPPES registry on May 22, 2020.

Where is Demi O'brien located?

Demi O'brien practices at 288 Public Sq, Greenfield, IA 50849. The listed phone number is (641) 743-6529.

What is Demi O'brien's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Demi O'brien enrolled in Medicare?

Yes. Demi O'brien is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Demi O'brien accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Home State Health, Ambetter from NH Healthy Families and Ambetter from Sunflower Health Plan and 2 other insurers list Demi O'brien as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Demi O'brien affiliated with any hospitals?

According to CMS data, Demi O'brien is affiliated with Adair County Memorial Hospital and Greater Regional Medical Center.

When was this NPI record last updated?

The NPPES record for Demi O'brien was last updated on February 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.