CHOON SIL KOO M.D.
NPI 1265427595
Pathology - Anatomic Pathology & Clinical Pathology in Upland, CA

Q: What is Choon Koo's NPI number?

The NPI number for Choon Koo is 1265427595. It was assigned to this individual provider in the NPPES registry on September 13, 2005.

Q: What is Choon Koo's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Q: When was this NPI record last updated?

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

Active since September 13, 2005PECOS EnrolledAccepts Medicare Assignment

999 SAN BERNARDINO RD, UPLAND, CA 91786(909) 985-2811(909) 920-3827 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: July 19, 2026.

On this page

About Choon Sil Koo M.d. NPPES

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

CHOON SIL KOO M.D. (NPI 1265427595) is an individual anatomic pathology & clinical pathology provider in Upland, California, licensed in California (A31561) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS and is a graduate of Other (1968).

NPPES Registry Identity

NPI1265427595

Entity TypeIndividualMale

Primary Taxonomy207ZP0102X

Provider Legal NameCHOON SIL KOOCredential: M.D.

Location Address999 SAN BERNARDINO RDUpland, CA 91786-4920

Mailing AddressPo Box 2311Chatsworth, CA 91313-2311 · (818) 718-9500 · Fax (818) 718-9507

Phone(909) 985-2811

Fax(909) 920-3827

Sole ProprietorNo

Medical School CMSOtherGraduated 1968

Enumeration DateSeptember 13, 2005

Last NPPES UpdateJuly 8, 2007

✔ NPI 1265427595 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZP0102X

License✔ Licensed in CA · A31561

Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

999 SAN BERNARDINO RD, Upland, CA 91786

Open in Google Maps ↗

Other Identifiers 3

Medicare UPINE65318CA

Medicaid00A315610CA

Medicare ID-Type Unspecified00A315611CA

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

Choon Sil Koo 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 ID8022162767

PECOS Enrollment IDI20090814000611

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 13

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.

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

525 services300 patients

Special stained specimen slides to examine tissue, each additional procedure 88341

Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.

217 services53 patients

Special stained specimen slides to examine tissue, initial procedure 88342

This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.

172 services141 patients

Special stained specimen slides to examine tissue including interpretation and report 88313

Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.

80 services46 patients

Pathology examination of tissue using a microscope, moderately high complexity 88307

A pathology examination of tissue with moderate complexity involves a detailed study of a small tissue sample from your body. Using a microscope, experts analyze the tissue's structure and cells to identify any abnormalities. This helps in diagnosing various health conditions accurately.

70 services44 patients

Pathology examination of tissue using a microscope, moderately low complexity 88304

A pathology examination of tissue, moderately low complexity, involves studying a small sample of your body tissue under a microscope. It helps to identify any abnormal cells or diseases. It's a routine procedure, not complex, and provides crucial insights for your diagnosis.

68 services55 patients

Microscopic genetic analysis of tumor, manual 88360

Microscopic genetic analysis of a tumor involves examining your tumor's genes under a microscope. This helps identify specific genetic changes in the tumor cells. This information can aid in diagnosing, predicting disease progression, and determining the most effective treatment options.

58 services21 patients

Cell examination of body fluid, smears 88104

Cell examination of body fluid, or smear, is a laboratory test where a sample of your body fluid is taken. It's then thinly spread on a glass slide and examined under a microscope to check for abnormalities. This can help diagnose various health conditions.

34 services27 patients

Preparation of tissue for examination by removing any calcium present 88311

This procedure involves treating tissue samples to remove any calcium, which can interfere with the examination. The tissue is soaked in a special solution that safely dissolves the calcium, leaving the tissue intact for accurate analysis. This helps in making precise diagnoses.

30 services26 patients

Blood smear interpretation by physician with written report 85060

Blood smear interpretation is a lab test where your doctor examines a sample of your blood under a microscope. They look for abnormalities in your blood cells which can help diagnose various conditions. You'll receive a written report of the findings.

29 services27 patients

Examination of archival tissue for genetic analysis 88363

Examination of archival tissue for genetic analysis involves studying previously collected tissue samples. This process helps detect any genetic alterations that may be linked to certain diseases. It's a crucial step in understanding your health and planning appropriate treatments.

20 services16 patients

Pathology examination of tissue using a microscope, limited examination 88300

A pathology examination of tissue using a microscope is a procedure where a small sample of your tissue is observed under a microscope. This limited examination helps identify any abnormal cells or signs of disease, aiding in accurate diagnosis and treatment planning.

18 services17 patients

Evaluation of fine needle aspirate with interpretation and report 88173

This procedure involves using a thin needle to collect a small sample from an abnormal area or lump. The sample is then examined under a microscope to identify any potential issues. A report of the findings is provided for further analysis.

13 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91786 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

$136.04 typical visit price

range $59.60 – $179.42

Typical copayment $34.01 (range $14.90 – $44.85)

Most-billed visit code 99204

Established Patient

$104.64 typical visit price

range $19.37 – $146.42

Typical copayment $26.16 (range $4.84 – $36.60)

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.

HOWARD P. CHARMAN, MD, INC.

Pathology (Anatomic Pathology & Clinical Pathology)

999 SAN BERNARDINO RD
UPLAND, CA 91786

San Bernardino County (909) 985-2811

HOWARD P CHARMAN M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

999 SAN BERNARDINO RD
UPLAND, CA 91786

San Bernardino County (909) 985-2811

MICHAEL E STEPHENS NP

Nurse Practitioner

999 SAN BERNARDINO RD
UPLAND, CA 91786

San Bernardino County (909) 985-2811

UPLAND ANESTHESIA MEDICAL GROUP

Anesthesiology

999 SAN BERNARDINO RD
UPLAND, CA 91786

San Bernardino County (909) 920-4848

YOON O CHANG MD

Radiology (Diagnostic Radiology)

999 SAN BERNARDINO RD, DEPARTMENT OF RADIOLOGY
UPLAND, CA 91786

San Bernardino County (909) 985-2811

JAMES S AKAMINE M.D.

Radiology (Diagnostic Radiology)

999 SAN BERNARDINO RD
UPLAND, CA 91786

San Bernardino County (909) 466-4231

PATRICK J BRYAN M.D.

Radiology (Diagnostic Radiology)

999 SAN BERNARDINO RD
UPLAND, CA 91786

San Bernardino County (909) 466-4231

BARTHOLOMEW C PALENCHAR M.D.

Radiology (Diagnostic Radiology)

999 SAN BERNARDINO RD
UPLAND, CA 91786

San Bernardino County (909) 466-4231

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 Choon Koo's NPI number?

The NPI number for Choon Koo is 1265427595. It was assigned to this individual provider in the NPPES registry on September 13, 2005.

Where is Choon Koo located?

Choon Koo practices at 999 San Bernardino Rd, Upland, CA 91786. The listed phone number is (909) 985-2811.

What is Choon Koo's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Choon Koo enrolled in Medicare?

Yes. Choon Koo 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 Choon Koo was last updated on July 8, 2007. NPI Profile syncs with the weekly NPPES data releases published by CMS.