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SIAMAK MILANCHI M.D.
NPI 1083829956
Colon & Rectal Surgery in Irvine, CA

Active since May 13, 2007PECOS EnrolledAccepts Medicare Assignment
16300 SAND CANYON AVE STE 604, IRVINE, CA 92618(949) 429-0268(949) 420-2180 Get Directions Write a Review

NPPES record last updated: October 22, 2012. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Siamak Milanchi M.d. NPPES

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

SIAMAK MILANCHI M.D. (NPI 1083829956) is an individual colon & rectal surgery provider in Irvine, California, licensed in California (A92723) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1996).

NPPES Registry Identity

NPI1083829956
Entity TypeIndividualMale
Primary Taxonomy208C00000X
Provider Legal NameSIAMAK MILANCHICredential: M.D.
Location Address16300 SAND CANYON AVE STE 604Irvine, CA 92618-3706
Mailing AddressPo Box 52435Irvine, CA 92619-2435
Phone(949) 429-0268
Fax(949) 420-2180
Sole ProprietorNo
Medical School CMSOtherGraduated 1996
Enumeration DateMay 13, 2007
Last NPPES UpdateOctober 22, 2012
✔ NPI 1083829956 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyColon & Rectal SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208C00000X
License✔ Licensed in CA · A92723
Definition
A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.
Also ListedSurgeryTaxonomy 208600000X · License A92723 (CA)
16300 SAND CANYON AVE STE 604, Irvine, CA 92618
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Other Names 1

Former Name (1)Siamak Milanchi Anarkooli

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

Siamak Milanchi 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 ID3678626769
PECOS Enrollment IDI20090807000125
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 4

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
135 services77 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
69 services69 patients
Diagnostic exam of anus using an endoscope 46600
This procedure involves using a thin, flexible instrument called an endoscope to examine the anal area. It helps detect any abnormal conditions or issues. It's a safe, routine exam performed by a healthcare professional.
33 services27 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92618 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
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.

Other Providers at the Same Location NPPES

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

NAHID HAMOUI, MD, INC
Surgery
16300 SAND CANYON AVE STE 604
IRVINE, CA 92618
Orange County (949) 336-8761

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 Siamak Milanchi's NPI number?

The NPI number for Siamak Milanchi is 1083829956. It was assigned to this individual provider in the NPPES registry on May 13, 2007. The provider is also known as Siamak Milanchi Anarkooli.

Where is Siamak Milanchi located?

Siamak Milanchi practices at 16300 Sand Canyon Ave Ste 604, Irvine, CA 92618. The listed phone number is (949) 429-0268.

What is Siamak Milanchi's specialty?

The primary specialty registered for this NPI is Colon & Rectal Surgery with taxonomy code 208C00000X.

Is Siamak Milanchi enrolled in Medicare?

Yes. Siamak Milanchi 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 Siamak Milanchi was last updated on October 22, 2012. NPI Profile syncs with the weekly NPPES data releases published by CMS.