IUN-IU A. CHEN D.O.
NPI 1114288412
Family Medicine in Petaluma, CA

Q: What is Iun-iu Chen's NPI number?

The NPI number for Iun-iu Chen is 1114288412. It was assigned to this individual provider in the NPPES registry on June 4, 2012.

Q: What is Iun-iu Chen's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Iun-iu Chen was last updated on July 1, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since June 04, 2012PECOS EnrolledAccepts Medicare Assignment

1179 N MCDOWELL BLVD, PETALUMA, CA 94954(707) 559-7500(707) 559-7620 Get Directions Write a Review

NPPES record last updated: July 1, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 1, 2025, Nov 15, 2019, Sep 20, 2019 and 2 more (5 updates tracked since 2016).

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About Iun-iu A. Chen D.o. NPPES

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

IUN-IU A. CHEN D.O. (NPI 1114288412) is an individual family medicine provider in Petaluma, California, licensed in Massachusetts (252070) and active in the NPI registry since June 2012. She is enrolled in Medicare PECOS and is a graduate of Rutgers New Jersey Medical School (2012).

NPPES Registry Identity

NPI1114288412

Entity TypeIndividualFemale

Primary Taxonomy207Q00000X

Provider Legal NameIUN-IU A. CHENCredential: D.O.

Location Address1179 N MCDOWELL BLVDPetaluma, CA 94954-0002

Mailing Address1179 N Mcdowell BlvdPetaluma, CA 94954-6559 · (707) 559-7500 · Fax (707) 559-7620

Phone(707) 559-7500

Fax(707) 559-7620

Sole ProprietorNo

Medical School CMSRutgers New Jersey Medical SchoolGraduated 2012

Enumeration DateJune 4, 2012

Last NPPES UpdateJuly 1, 20255 updates tracked since enumeration

NPPES CertifiedJuly 1, 2025

✔ NPI 1114288412 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in MA · 252070

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.

1179 N MCDOWELL BLVD, Petaluma, CA 94954

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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

Iun-iu A. Chen D.o. 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 ID6709018872

PECOS Enrollment IDI20160128002641

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94954 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

$96.16 typical visit price

range $63.04 – $187.01

Typical copayment $24.04 (range $15.76 – $46.75)

Most-billed visit code 99203

Established Patient

$109.88 typical visit price

range $21.02 – $153.40

Typical copayment $27.47 (range $5.25 – $38.35)

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.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

9 suppliers27 claims62 services$4.58 avg. paid by Medicare

Standard wheelchair K0001

DME-Wheelchairs · category DD000N

1 supplier15 claims15 services$15.56 avg. paid by Medicare

Elevating leg rests, pair (for use with capped rental wheelchair base) K0195

DME-Wheelchairs · category DD021N

1 supplier11 claims11 services$7.13 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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Other Providers at the Same Location NPPES 20

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

REBECCA KATZ FINNEMORE MD

Family Medicine