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DR. ANDREW C KO M.D.
NPI 1437170990
Internal Medicine - Gastroenterology in Yorba Linda, CA

Active since July 21, 2006PECOS EnrolledAccepts Medicare Assignment
16671 EAST YORBA LINDA BLVD STE 210, YORBA LINDA, CA 92886(714) 996-3700(714) 985-6480 Get Directions Write a Review

NPPES record last updated: June 2, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 2, 2026, May 13, 2026, Jun 19, 2025 and 1 more (4 updates tracked since 2022).

About Dr. Andrew C Ko M.d. NPPES

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

DR. ANDREW C KO M.D. (NPI 1437170990) is an individual gastroenterology provider in Yorba Linda, California, licensed in California (G61260) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with University Of Washington Medical Ctr, and is a graduate of R Franklin University Of Med & Sci/chicago Medical School (1986).

NPPES Registry Identity

NPI1437170990
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. ANDREW C KOCredential: M.D.
Location Address16671 EAST YORBA LINDA BLVD STE 210Yorba Linda, CA 92886
Mailing Address16671 East Yorba Linda Blvd Ste 210Yorba Linda, CA 92886-2025 · (714) 996-3700
Phone(714) 996-3700
Fax(714) 985-6480
Sole ProprietorYes
Medical School CMSR Franklin University Of Med & Sci/chicago Medical SchoolGraduated 1986
Enumeration DateJuly 21, 2006
Last NPPES UpdateJune 2, 20264 updates tracked since enumeration
NPPES CertifiedJune 2, 2026
✔ NPI 1437170990 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 · G61260
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.
16671 EAST YORBA LINDA BLVD STE 210, Yorba Linda, CA 92886
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Other Identifiers 1

Medicaid00G612601CA

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. Andrew C Ko 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 ID7719946771
PECOS Enrollment IDI20041005001263
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 low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
106 services58 patients
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.
82 services50 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
27 services27 patients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
16 services16 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Washington Medical Ctr

Acute Care Hospitals · Seattle, WA
3/5 CMS rating
OwnershipGovernment - State
CMS Certification Number500008
Location1959 NE Pacific St Box 356151Seattle, WA 98195 · King County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92886 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

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 Andrew Ko's NPI number?

The NPI number for Andrew Ko is 1437170990. It was assigned to this individual provider in the NPPES registry on July 21, 2006.

Where is Andrew Ko located?

Andrew Ko practices at 16671 East Yorba Linda Blvd Ste 210, Yorba Linda, CA 92886. The listed phone number is (714) 996-3700.

What is Andrew Ko's specialty?

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

Is Andrew Ko enrolled in Medicare?

Yes. Andrew Ko 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.

Is Andrew Ko affiliated with any hospitals?

According to CMS data, Andrew Ko is affiliated with University Of Washington Medical Ctr.

When was this NPI record last updated?

The NPPES record for Andrew Ko was last updated on June 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.