DR. YOUNG J KO MD
NPI 1639277130
Internal Medicine in Lancaster, CA

Q: What is Young Ko's NPI number?

The NPI number for Young Ko is 1639277130. It was assigned to this individual provider in the NPPES registry on September 20, 2006.

Q: What is Young Ko's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Young Ko was last updated on September 11, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since September 20, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 05D0666012 · Accreditation

39.18/100

CMS Quality Rating

44215 15TH ST WEST, SUITE 303, LANCASTER, CA 93534(661) 945-0723(661) 949-5740 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

On this page

About Dr. Young J Ko Md NPPES

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

DR. YOUNG J KO MD (NPI 1639277130) is an individual internal medicine provider in Lancaster, California, licensed in California (A39814) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, holds an CLIA Accreditation certificate valid through December 22, 2027, and is a graduate of Other (1973).

NPPES Registry Identity

NPI1639277130

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. YOUNG J KOCredential: MD

Location Address44215 15TH ST WEST, SUITE 303Lancaster, CA 93534

Mailing Address44215 15th St West, Suite 303Lancaster, CA 93534 · (661) 945-0723 · Fax (661) 949-5740

Phone(661) 945-0723

Fax(661) 949-5740

Sole ProprietorNo

Medical School CMSOtherGraduated 1973

Enumeration DateSeptember 20, 2006

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1639277130 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A39814

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License A39814 (CA)

Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License A39814 (CA)

44215 15TH ST WEST, Lancaster, CA 93534

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Other Identifiers 1

Medicaid00A398140CA

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. Young J Ko Md 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 ID4880764448

PECOS Enrollment IDI20080609000482

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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Accreditation 05D0666012

Young J Ko MD · Lancaster, CA

Active · expires Dec 22, 2027

CLIA Number05D0666012

Laboratory TypePhysician Office

Certificate Effective DateDecember 23, 2025

Certificate Expiration DateDecember 22, 2027

Laboratory DirectorDr. Young J. Ko

Laboratory Phone(661) 945-0723

Laboratory LocationYoung J Ko MD44215 15th St West, Ste 303, Lancaster, CA 93534

CLIA data matches this NPI record on: Address Phone

This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Areas of Expertise CMS Part B claims 24

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.

1,546 services410 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

1,313 services140 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

357 services196 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

244 services25 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

149 services137 patients

Test to measure largest amount of air breathed in an out 94200

This test, called spirometry, measures your lung capacity. It involves taking a deep breath and then exhaling as forcefully as possible into a machine. The results help assess how well your lungs function.

123 services122 patients

Inhalation treatment for airway obstruction or sputum production 94640

Inhalation treatment, also known as nebulizer therapy, helps clear airway obstructions and reduce sputum production. It involves breathing in medication through a device, turning it into a mist. This can open up the airways, making breathing easier and helping to cough out mucus.

123 services122 patients

Test to determine lung volumes using sensors 94726

This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.

122 services121 patients

Test to measure expiratory airflow and volume initiated by patient and evaluated by provider 94016

This test, called spirometry, measures how much and how quickly you can move air out of your lungs. You'll breathe into a mouthpiece connected to a machine. Your provider evaluates the results to assess your lung health.

121 services120 patients

Test to examine how well the lungs exchange gases 94729

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

119 services118 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

106 services83 patients

Artery puncture collection of blood sample 36600

Artery puncture collection is a procedure where a thin needle is inserted into an artery, typically in your wrist, to collect a blood sample. This method often provides more accurate results for certain tests, such as oxygen and carbon dioxide levels. It's generally safe but may cause slight discomfort.

100 services99 patients

Blood gases measurement 82803

Blood gases measurement is a test that checks how well your lungs move oxygen into your blood and remove carbon dioxide. It involves drawing blood from an artery, typically in your wrist. The results help evaluate your lung function and guide treatment plans.

100 services100 patients

Carbon dioxide (bicarbonate) level 82374

The Carbon Dioxide (Bicarbonate) Level test measures the amount of bicarbonate, a form of carbon dioxide, in your blood. Bicarbonate helps balance the pH level in your body. This test aids in diagnosing and monitoring conditions that affect your body's acid-base balance.

99 services99 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

87 services87 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

76 services76 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

72 services72 patients

Injection of drug or substance into vein 96374

This procedure involves introducing a medication or substance directly into your vein using a syringe. It's a quick and efficient way to deliver treatment throughout your body. You might feel a small prick when the needle enters. It's generally safe and effective.

72 services28 patients

Blood glucose (sugar) measurement using reagent strip 82948

Blood glucose measurement using a reagent strip is a simple process. A tiny blood sample, usually taken from your finger, is placed on a test strip. The strip is inserted into a device that reads the blood sugar level. It's a quick, easy way to monitor blood sugar levels.

27 services15 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

27 services26 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.

26 services26 patients

Irrigation and suction of lung airways to obtain cells using an endoscope 31624

This is a procedure where a thin, flexible tube called an endoscope is inserted through your mouth into the lungs. A small amount of saline is then introduced to wash the airways. The fluid, along with cells from the lung, is suctioned back for analysis.

24 services21 patients

Aspiration of initial secretion of lung airway using an endoscope 31645

This procedure involves using a thin, flexible tube called an endoscope to collect initial secretions from your lung airway. This helps doctors diagnose and treat respiratory conditions. It's a safe, minimally invasive procedure.

20 services18 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

18 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93534 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

39.18/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

21.66

Improvement Activities

Cost

68.4

Reported Quality Measures

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…

100%317 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 34

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

12 suppliers56 claims123 services$5.86 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

10 suppliers30 claims36 services$1.01 avg. paid by Medicare

Tubing with integrated heating element for use with positive airway pressure device A4604

DME-Other DME · category DE001N

9 suppliers70 claims70 services$41.69 avg. paid by Medicare

Administration set, with small volume nonfiltered pneumatic nebulizer, disposable A7003

DME-Other DME · category DE000N

1 supplier54 claims99 services$1.90 avg. paid by Medicare

Administration set, with small volume nonfiltered pneumatic nebulizer, non-disposable A7005

DME-Other DME · category DE000N

2 suppliers15 claims15 services$17.59 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

8 suppliers62 claims62 services$105.99 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

8 suppliers60 claims162 services$38.16 avg. paid by Medicare

Cushion for use on nasal mask interface, replacement only, each A7032

DME-Other DME · category DE001N

7 suppliers38 claims179 services$21.54 avg. paid by Medicare

Pillow for use on nasal cannula type interface, replacement only, pair A7033

DME-Other DME · category DE001N

8 suppliers37 claims191 services$14.53 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

12 suppliers69 claims69 services$60.67 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

13 suppliers76 claims76 services$21.14 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

11 suppliers59 claims59 services$17.58 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

14 suppliers137 claims702 services$2.52 avg. paid by Medicare

Filter, non disposable, used with positive airway pressure device A7039

DME-Other DME · category DE001N

8 suppliers27 claims27 services$7.28 avg. paid by Medicare

Water chamber for humidifier, used with positive airway pressure device, replacement, each A7046

DME-Other DME · category DE001N

11 suppliers43 claims43 services$12.82 avg. paid by Medicare

Enteral feeding supply kit; syringe fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4034

Other-Enteral and Parenteral · category OB006N

1 supplier12 claims359 services$2.88 avg. paid by Medicare

Enteral formula, nutritionally complete, calorically dense (equal to or greater than 1.5 kcal/ml) with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4152

Other-Enteral and Parenteral · category OB006N

1 supplier11 claims5,195 services$0.26 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), without side rails, without mattress E0295

DME-Hospital Beds · category DB000N

1 supplier11 claims11 services$64.39 avg. paid by Medicare

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

2 suppliers190 claims190 services$19.52 avg. paid by Medicare

Portable oxygen contents, gaseous, 1 month's supply = 1 unit E0443

DME-Oxygen and Supplies · category DC000N

3 suppliers17 claims24 services$49.72 avg. paid by Medicare

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466

DME-Other DME · category DE005N

1 supplier12 claims12 services$784.18 avg. paid by Medicare

High frequency chest wall oscillation system, with full anterior and/or posterior thoracic region receiving simultaneous external oscillation, includes all accessories and supplies, each E0483

DME-Other DME · category DE000N

2 suppliers14 claims14 services$965.10 avg. paid by Medicare

Oscillatory positive expiratory pressure device, non-electric, any type, each E0484

DME-Other DME · category DE000N

1 supplier14 claims14 services$35.64 avg. paid by Medicare

Humidifier, heated, used with positive airway pressure device E0562

DME-Other DME · category DE001N

2 suppliers30 claims30 services$16.23 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

4 suppliers207 claims214 services$7.32 avg. paid by Medicare

Continuous positive airway pressure (cpap) device E0601

DME-Other DME · category DE001N

6 suppliers98 claims98 services$38.65 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

10 suppliers590 claims590 services$103.38 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

8 suppliers85 claims85 services$35.48 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); initial 30-day supply as a beneficiary G0333

DME-Other DME · category DE000N

3 suppliers15 claims15 services$45.05 avg. paid by Medicare

Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613

DME-Drugs Administered Through DME · category DG006N

7 suppliers53 claims13,108 services$0.03 avg. paid by Medicare

Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620

DME-Drugs Administered Through DME · category DG006N

7 suppliers81 claims7,562 services$0.10 avg. paid by Medicare

Revefenacin inhalation solution, fda-approved final product, non-compounded, administered through dme, 1 microgram J7677

DME-Drugs Administered Through DME · category DG006N

1 supplier24 claims126,000 services$0.15 avg. paid by Medicare

Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing K0738

DME-Oxygen and Supplies · category DC000N

1 supplier11 claims11 services$38.18 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

13 suppliers141 claims141 services$25.08 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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Other Providers at the Same Location NPPES 2

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

NITIN A SHAH MD INC

Orthopaedic Surgery

44215 15TH ST WEST, #110
LANCASTER, CA 93534

Los Angeles County (661) 945-7802

KALPANA RAVIKUMAR MD

Physical Medicine & Rehabilitation

44215 15TH ST WEST, SUITE 114
LANCASTER, CA 93534

Los Angeles County (661) 945-4563

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 Young Ko's NPI number?

The NPI number for Young Ko is 1639277130. It was assigned to this individual provider in the NPPES registry on September 20, 2006.

Where is Young Ko located?

Young Ko practices at 44215 15th St West Suite 303, Lancaster, CA 93534. The listed phone number is (661) 945-0723.

What is Young Ko's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Young Ko enrolled in Medicare?

Yes. Young 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.

Does Young Ko hold a CLIA laboratory certificate?

Yes. A Certificate of Accreditation (number 05D0666012) is associated with this NPI, valid through December 22, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Young Ko was last updated on September 11, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.

About Dr. Young J Ko Md NPPES

NPPES Registry Identity

Specialties & Licenses 3

Other Identifiers 1

Medicare Participation & PECOS CMS

Medicare Enrollment Status

CLIA Laboratory Certificates CMS CLIA

Certificate of Accreditation · 05D0666012

Areas of Expertise CMS Part B claims 24

Physician Visit Costs CMS claims · ZIP area

Medicare Quality Performance CMS QPP · MIPS

Reported Quality Measures

Referred Medical Equipment & Supplies CMS DME claims 34

Other Providers at the Same Location NPPES 2

Frequently Asked Questions NPPES & CMS

What is Young Ko's NPI number?

Where is Young Ko located?

What is Young Ko's specialty?

Is Young Ko enrolled in Medicare?

Does Young Ko hold a CLIA laboratory certificate?

When was this NPI record last updated?

Certificate of Accreditation 05D0666012