DEREK C. ABBASSI MD
NPI 1841364155
Obstetrics & Gynecology in Walnut Creek, CA

Q: What is Derek Abbassi's NPI number?

The NPI number for Derek Abbassi is 1841364155. It was assigned to this individual provider in the NPPES registry on November 20, 2006.

Q: What is Derek Abbassi's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for Derek Abbassi was last updated on July 8, 2007. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since November 20, 2006PECOS Enrolled

1425 S MAIN ST, WALNUT CREEK, CA 94596(925) 295-4000 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Derek C. Abbassi Md NPPES

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

DEREK C. ABBASSI MD (NPI 1841364155) is an individual obstetrics & gynecology provider in Walnut Creek, California, licensed in California (A63678) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1841364155

Entity TypeIndividualMale

Primary Taxonomy207V00000X

Provider Legal NameDEREK C. ABBASSICredential: MD

Location Address1425 S MAIN STWalnut Creek, CA 94596-5318

Mailing Address1800 Harrison St Fl 7Oakland, CA 94612-3429 · (510) 625-6262

Phone(925) 295-4000

Sole ProprietorNo

Enumeration DateNovember 20, 2006

Last NPPES UpdateJuly 8, 2007

✔ NPI 1841364155 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in CA · A63678

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

1425 S MAIN ST, Walnut Creek, CA 94596

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Other Identifiers 3

Medicare UPINH85162

Medicaid00A636780CA

Medicare ID-Type Unspecified00A636780

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Derek C. Abbassi Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 94596 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

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.