DR. PARKER ANDREW DUNCAN DIAZ MD, MPH, FAAFP
NPI 1033434923
Family Medicine - Addiction Medicine in Santa Rosa, CA

Q: What is Parker Duncan Diaz's NPI number?

The NPI number for Parker Duncan Diaz is 1033434923. It was assigned to this individual provider in the NPPES registry on April 2, 2010. The provider is also known as Dr. Parker Andrew Duncan MD, Mph.

Q: What is Parker Duncan Diaz's specialty?

The primary specialty registered for this NPI is Family Medicine, specializing in Addiction Medicine, with taxonomy code 207QA0401X.

Active since April 02, 2010PECOS EnrolledAccepts Medicare Assignment

751 LOMBARDI CT, SANTA ROSA, CA 95407(707) 547-2222(707) 547-2229 Get Directions Write a Review

NPPES record last updated: October 18, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Oct 18, 2023, Apr 3, 2023, Mar 17, 2018 and 1 more (4 updates tracked since 2017).

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About Dr. Parker Andrew Duncan Diaz Md, Mph, Faafp NPPES

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

DR. PARKER ANDREW DUNCAN DIAZ MD, MPH, FAAFP (NPI 1033434923) is an individual addiction medicine provider in Santa Rosa, California, licensed in California (A118268) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of University Of California, Irvine, California College Of Medicine (2010).

NPPES Registry Identity

NPI1033434923

Entity TypeIndividualMale

Primary Taxonomy207QA0401X

Provider Legal NameDR. PARKER ANDREW DUNCAN DIAZCredential: MD, MPH, FAAFP

Location Address751 LOMBARDI CTSanta Rosa, CA 95407-6798

Mailing Address3569 Round Barn CirSanta Rosa, CA 95403 · (707) 303-3600 · Fax (707) 583-8796

Phone(707) 547-2222

Fax(707) 547-2229

Sole ProprietorNo

Medical School CMSUniversity Of California, Irvine, California College Of MedicineGraduated 2010

Enumeration DateApril 2, 2010

Last NPPES UpdateOctober 18, 20234 updates tracked since enumeration

NPPES CertifiedSeptember 21, 2023

✔ NPI 1033434923 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily Medicine · Addiction MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207QA0401X

License✔ Licensed in CA · A118268

Definition

A family medicine physician who specializes in the diagnosis and treatment of addictions.

751 LOMBARDI CT, Santa Rosa, CA 95407

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Other Names 1

Former Name (1)Dr. Parker Andrew Duncan Md, Mph

Secondary Practice Locations 3

Location 13569 Round Barn CirSanta Rosa, CA 95403 · Phone (707) 303-3600 · Fax (707) 303-3611

Location 2625 Steele LnSanta Rosa, CA 95403-3127 · Phone (707) 576-1852

Location 3926 Cherry StSanta Rosa, CA 95404-4209 · Phone (707) 867-6533

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

Dr. Parker Andrew Duncan Diaz Md, Mph, Faafp 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 ID1850524422

PECOS Enrollment IDI20240503001420

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

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.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95407 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

$142.00 typical visit price

range $63.04 – $187.01

Typical copayment $35.50 (range $15.76 – $46.75)

Most-billed visit code 99204

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

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

6 suppliers15 claims34 services$4.34 avg. paid by Medicare

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

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.

SOPHIA ROSE WUEST

Nurse Practitioner (Psychiatric/Mental Health)

751 LOMBARDI CT
SANTA ROSA, CA 95407

Sonoma County (707) 303-3600

DR. LAURA KIMBERLY REID D.D.S

Dentist (Dental Public Health)

751 LOMBARDI CT
SANTA ROSA, CA 95407

Sonoma County (707) 547-2221

DR. PAUL THOMPSON ATKINSON D.D.S., PH.D

Dentist (General Practice)

751 LOMBARDI CT
SANTA ROSA, CA 95407

Sonoma County (707) 547-2221

PAMELA C SARLANDT RN

Registered Nurse

751 LOMBARDI CT
SANTA ROSA, CA 95407

Sonoma County (707) 547-2222

NANCY BELL ALLEN FNP

Nurse Practitioner (Family)

751 LOMBARDI CT, SUITE A
SANTA ROSA, CA 95407

Sonoma County (707) 547-2266

ALLISON MICHELLE MAGYAR MSN, APRN, FNP-BC

Nurse Practitioner (Family)

751 LOMBARDI CT
SANTA ROSA, CA 95407

Sonoma County (707) 583-8770

JENNIFER LYNNE EID AMMONS FNP

Nurse Practitioner (Family)

751 LOMBARDI CT, SUITE A
SANTA ROSA, CA 95407

Sonoma County (707) 547-2266

NANCY CASTRO CASTILLO FNP

Nurse Practitioner (Family)

751 LOMBARDI CT
SANTA ROSA, CA 95407

Sonoma County (707) 547-2222

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 Parker Duncan Diaz's NPI number?

The NPI number for Parker Duncan Diaz is 1033434923. It was assigned to this individual provider in the NPPES registry on April 2, 2010. The provider is also known as Dr. Parker Andrew Duncan MD, Mph.

Where is Parker Duncan Diaz located?

Parker Duncan Diaz practices at 751 Lombardi Ct, Santa Rosa, CA 95407. The listed phone number is (707) 547-2222.

What is Parker Duncan Diaz's specialty?

The primary specialty registered for this NPI is Family Medicine, specializing in Addiction Medicine, with taxonomy code 207QA0401X.

Is Parker Duncan Diaz enrolled in Medicare?

Yes. Parker Duncan Diaz 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.

When was this NPI record last updated?

The NPPES record for Parker Duncan Diaz was last updated on October 18, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.