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DERRICK SIAO M.D.
NPI 1073849261
Internal Medicine - Gastroenterology in Santa Clara, CA

Active since October 23, 2009PECOS EnrolledAccepts Medicare Assignment
710 LAWRENCE EXPY, DEPT 248, SANTA CLARA, CA 95051(408) 851-2750 Get Directions Write a Review

NPPES record last updated: February 11, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Feb 11, 2022, Mar 16, 2016 (2 updates tracked since 2016).

About Derrick Siao M.d. NPPES

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

DERRICK SIAO M.D. (NPI 1073849261) is an individual gastroenterology provider in Santa Clara, California, licensed in California (A110506) and active in the NPI registry since October 2009. He is enrolled in Medicare PECOS and is a graduate of University Of Michigan Medical School (2008).

NPPES Registry Identity

NPI1073849261
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDERRICK SIAOCredential: M.D.
Location Address710 LAWRENCE EXPY, DEPT 248Santa Clara, CA 95051-5173
Mailing Address710 Lawrence Expy, Dept 248Santa Clara, CA 95051-5173
Phone(408) 851-2750
Sole ProprietorYes
Medical School CMSUniversity Of Michigan Medical SchoolGraduated 2008
Enumeration DateOctober 23, 2009
Last NPPES UpdateFebruary 11, 20222 updates tracked since enumeration
✔ NPI 1073849261 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CA · A110506
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
710 LAWRENCE EXPY, Santa Clara, CA 95051
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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

Derrick Siao 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 ID2062632417
PECOS Enrollment IDI20141007000204
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 95051 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
$156.67 typical visit price
range $70.37 – $206.04
Typical copayment $39.16 (range $17.59 – $51.51)
Most-billed visit code 99204
Established Patient
$121.77 typical visit price
range $23.96 – $169.60
Typical copayment $30.44 (range $5.99 – $42.40)
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.

MRS. SHARLENE JUNIO MADANES N.P.
Nurse Practitioner (Family)
710 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 851-3829
ELLEN CHINCHILLI MD
Student in an Organized Health Care Education/Training Program
710 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 851-3817
SWARNA L KONERU RD
Dietitian, Registered
710 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 851-1000
MRS. BRIDGET M. BOUYSSOUNOUSE P.T.
Physical Therapist
710 LAWRENCE EXPY, DEPT. #174
SANTA CLARA, CA 95051
Santa Clara County (408) 851-1466
FLAIR D. GOLDMAN DPM
Podiatrist
710 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 236-6400
MR. KRISNA P CHAI M.D.
Internal Medicine (Gastroenterology)
710 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 851-1000
KARISSA TAAN MPT
Physical Therapist
710 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 851-1492
ANDREA B. HUTCHINSON MD
Obstetrics & Gynecology
710 LAWRENCE EXPY
SANTA CLARA, CA 95051
Santa Clara County (408) 851-1000

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 Derrick Siao's NPI number?

The NPI number for Derrick Siao is 1073849261. It was assigned to this individual provider in the NPPES registry on October 23, 2009.

Where is Derrick Siao located?

Derrick Siao practices at 710 Lawrence Expy Dept 248, Santa Clara, CA 95051. The listed phone number is (408) 851-2750.

What is Derrick Siao's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Derrick Siao enrolled in Medicare?

Yes. Derrick Siao 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 Derrick Siao was last updated on February 11, 2022. 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.