DR. AARON DER M.D.
NPI 1174942130
Internal Medicine in Antioch, CA

Q: What is Aaron Der's NPI number?

The NPI number for Aaron Der is 1174942130. It was assigned to this individual provider in the NPPES registry on April 7, 2014.

Q: What is Aaron Der's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Aaron Der was last updated on November 1, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since April 07, 2014PECOS EnrolledAccepts Medicare Assignment

4501 SAND CREEK RD, ANTIOCH, CA 94531(925) 813-6500 Get Directions Write a Review

NPPES record last updated: November 1, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 1, 2021, Aug 2, 2018, Dec 5, 2017 (3 updates tracked since 2017).

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About Dr. Aaron Der M.d. NPPES

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

DR. AARON DER M.D. (NPI 1174942130) is an individual internal medicine provider in Antioch, California, licensed in California (A138897) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS and is a graduate of Boston University School Of Medicine (2014).

NPPES Registry Identity

NPI1174942130

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. AARON DERCredential: M.D.

Location Address4501 SAND CREEK RDAntioch, CA 94531

Mailing Address4501 Sand Creek RdAntioch, CA 94531-8687 · (925) 813-6500

Phone(925) 813-6500

Sole ProprietorYes

Medical School CMSBoston University School Of MedicineGraduated 2014

Enumeration DateApril 7, 2014

Last NPPES UpdateNovember 1, 20213 updates tracked since enumeration

NPPES CertifiedNovember 1, 2021

✔ NPI 1174942130 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A138897

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

4501 SAND CREEK RD, Antioch, CA 94531

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Other Identifiers 1

MedicaidAD3232267556CA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

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. Aaron Der M.d. 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 ID9436418340

PECOS Enrollment IDI20180123001990

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 94531 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

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

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 20

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

KRISTEN ASAKO SHIMODA PHARMD

Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)