DR. SENG M LEONG MD
NPI 1487750790
Internal Medicine in Barrington, IL
NPI Status: Active since September 15, 2006
Contact Information
27750 W HIGHWAY 22
BARRINGTON, IL
ZIP 60010
Phone: (847) 381-5800
Fax: (847) 381-5873
- Individual
- Male
- Years of Experience 57
- Internal Medicine
- Accepts Medicare Approved Payment
- PECOS Enrolled
About SENG LEONG
This page provides the complete NPI Profile along with additional information for Seng Leong, an internist established in Barrington, Illinois with a medical specialization in Internal Medicine and more than 57 years of experience. The healthcare provider is registered in the NPI registry with number 1487750790 assigned on September 2006. The practitioner's primary taxonomy code is 207R00000X with license number 036-055809 (IL). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1487750790
- Provider Name
- DR. SENG M LEONG MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 27750 W HIGHWAY 22 BARRINGTON, IL 60010
- Location Phone
- (847) 381-5800
- Location Fax
- (847) 381-5873
- Mailing Address
- 29373 NETWORK PL CHICAGO, IL 60673
- Mailing Phone
- (847) 390-5900
- Medical School Name
- OTHER
- Graduation Year
- 1969
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 09-15-2006
- Last Update Date
- 03-31-2025
- Code Navigator
An internist like Seng Leong is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Internal Medicine
- Taxonomy Code
- 207R00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 036-055809
- License State
- IL
- Taxonomy Description
- 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.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Additional Identifiers
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|---|---|---|
| L96137 | OTHER (01) | IL | MEDICARE ID |
| 110209671 | OTHER (01) | IL | RAILROAD MEDICARE |
| CH2241 | OTHER (01) | IL | RAIL ROAD MEDICARE GROUP |
| 03655809 | MEDICAID (05) | IL |
Medicare Participation & PECOS Enrollment Status
Seng Leong is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.
Seng Leong is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
PECOS PAC ID: 8022151083
What is the PECOS Associate Control ID?
A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.PECOS Enrollment ID: I20100130000127
What is the Provider Enrollment ID?
The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.Accepts Medicare Assignment? Yes
What does it mean "accepts medicare assignment"?
When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
Provider Referred Orders for Durable Medical Equipment, Devices & Supplies
The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.
Durable Medical Equipment
DME-Other DME (DE017N)
Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips (HCPCS:A4253)
44 DME suppliers used 123 Medicare Claims 329 Services Paid
DME-Medical/Surgical Supplies (DA000N)
Lancets, per box of 100 (HCPCS:A4259)
30 DME suppliers used 74 Medicare Claims 85 Services Paid
DME-Other DME (DE001N)
Tubing with integrated heating element for use with positive airway pressure device (HCPCS:A4604)
5 DME suppliers used 18 Medicare Claims 18 Services Paid
DME-Other DME (DE000N)
Administration set, with small volume nonfiltered pneumatic nebulizer, disposable (HCPCS:A7003)
3 DME suppliers used 13 Medicare Claims 25 Services Paid
DME-Other DME (DE000N)
Filter, disposable, used with aerosol compressor or ultrasonic generator (HCPCS:A7013)
4 DME suppliers used 14 Medicare Claims 24 Services Paid
DME-Other DME (DE001N)
Full face mask used with positive airway pressure device, each (HCPCS:A7030)
5 DME suppliers used 17 Medicare Claims 17 Services Paid
DME-Other DME (DE001N)
Face mask interface, replacement for full face mask, each (HCPCS:A7031)
5 DME suppliers used 15 Medicare Claims 42 Services Paid
DME-Other DME (DE001N)
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap (HCPCS:A7034)
5 DME suppliers used 12 Medicare Claims 12 Services Paid
DME-Other DME (DE001N)
Headgear used with positive airway pressure device (HCPCS:A7035)
8 DME suppliers used 21 Medicare Claims 21 Services Paid
DME-Other DME (DE001N)
Tubing used with positive airway pressure device (HCPCS:A7037)
4 DME suppliers used 13 Medicare Claims 13 Services Paid
DME-Other DME (DE001N)
Filter, disposable, used with positive airway pressure device (HCPCS:A7038)
7 DME suppliers used 19 Medicare Claims 109 Services Paid
DME-Other DME (DE001N)
Water chamber for humidifier, used with positive airway pressure device, replacement, each (HCPCS:A7046)
5 DME suppliers used 18 Medicare Claims 18 Services Paid
DME-Hospital Beds (DB000N)
Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress (HCPCS:E0260)
1 DME suppliers used 11 Medicare Claims 11 Services Paid
DME-Oxygen and Supplies (DC000N)
Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing (HCPCS:E0431)
5 DME suppliers used 65 Medicare Claims 66 Services Paid
DME-Other DME (DE000N)
Nebulizer, with compressor (HCPCS:E0570)
3 DME suppliers used 29 Medicare Claims 29 Services Paid
DME-Other DME (DE001N)
Continuous positive airway pressure (cpap) device (HCPCS:E0601)
2 DME suppliers used 13 Medicare Claims 13 Services Paid
DME-Other DME (DE000N)
Transport chair, adult size, patient weight capacity up to and including 300 pounds (HCPCS:E1038)
1 DME suppliers used 20 Medicare Claims 20 Services Paid
DME-Oxygen and Supplies (DC002N)
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate (HCPCS:E1390)
5 DME suppliers used 105 Medicare Claims 105 Services Paid
DME-Oxygen and Supplies (DC002N)
Portable oxygen concentrator, rental (HCPCS:E1392)
2 DME suppliers used 23 Medicare Claims 23 Services Paid
DME-Other DME (DE017N)
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service (HCPCS:K0553)
6 DME suppliers used 131 Medicare Claims 131 Services Paid
DME-Oxygen and Supplies (DC000N)
Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing (HCPCS:K0738)
1 DME suppliers used 12 Medicare Claims 12 Services Paid
DME-Other DME (DE000N)
Pharmacy dispensing fee for inhalation drug(s); per 30 days (HCPCS:Q0513)
3 DME suppliers used 24 Medicare Claims 24 Services Paid
Drugs Administered Through DME
DME-Drugs Administered Through DME (DG006N)
Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme (HCPCS:J7620)
3 DME suppliers used 23 Medicare Claims 2290 Services Paid
Areas of Expertise
The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.
Administration of influenza virus vaccine
Administration of pneumococcal vaccine
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit
Established patient office or other outpatient visit, 20-29 minutes
Established patient office or other outpatient visit, 30-39 minutes
Established patient office or other outpatient visit, 40-54 minutes
Follow-up hospital inpatient care per day, typically 35 minutes
Follow-up observation care per day, typically 35 minutes
Hospital discharge day management, 30 minutes or less
Hospital observation care on day of discharge
Influenza vaccine split virus, preservative free
Initial hospital inpatient care per day, typically 70 minutes
Initial hospital observation care per day, typically 70 minutes
Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment
Injection of drug or substance under skin or into muscle
Insertion of needle into vein for collection of blood sample
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use
Pneumococcal vaccine, 13-valent
Pneumococcal vaccine, 23-valent
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
Transitional care management services for problem of high complexity
Transitional care management services for problem of moderate complexity
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.
This service was performed 160 times for 155 patientsThe pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.
This service was performed 118 times for 118 patientsAn annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
This service was performed 122 times for 122 patientsAn annual wellness visit is a yearly appointment with your doctor to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's an opportunity to discuss your health status and goals and get a plan tailored for you.
This service was performed 113 times for 113 patientsThis 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.
This service was performed 152 times for 124 patientsThis 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.
This service was performed 1,053 times for 531 patientsThis 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.
This service was performed 112 times for 106 patientsFollow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
This service was performed 205 times for 49 patientsFollow-up observation care is a daily check-up service that lasts about 35 minutes. It involves monitoring your health progress after a treatment or procedure. The care team assesses your recovery and addresses any concerns or questions you may have.
This service was performed 18 times for 16 patientsHospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
This service was performed 56 times for 46 patientsHospital observation care on the day of discharge involves monitoring your health status to ensure stability before you leave. This includes assessing vital signs, response to treatment, and readiness for home care or rehabilitation.
This service was performed 14 times for 12 patientsThe 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.
This service was performed 155 times for 150 patientsInitial 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.
This service was performed 49 times for 40 patientsThis service involves a healthcare professional closely monitoring your health condition during your hospital stay. It typically lasts for about 70 minutes each day. This helps in timely detection of any changes in your health, allowing for immediate response and treatment.
This service was performed 59 times for 48 patientsAn Initial Preventive Physical Examination, also known as a "Welcome to Medicare" visit, is a one-time, face-to-face visit during your first 12 months of Medicare enrollment. It includes a review of your health, as well as education and counseling about preventive services and further screenings.
This service was performed 13 times for 13 patientsThis procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
This service was performed 13 times for 12 patientsThis procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
This service was performed 896 times for 520 patientsThis is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.
This service was performed 32 times for 29 patientsThe Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.
This service was performed 65 times for 65 patientsThe 13-valent pneumococcal vaccine is a shot that helps protect against 13 types of bacteria that can cause serious infections like pneumonia and meningitis. It's often recommended for children under 2 and adults over 65, or people with certain health conditions.
This service was performed 16 times for 16 patientsThe 23-valent pneumococcal vaccine is an injection that helps protect against serious infections caused by 23 types of pneumococcal bacteria. It's vital for those at risk, like older adults or people with certain health conditions, to prevent pneumonia, meningitis, and bloodstream infections.
This service was performed 37 times for 37 patientsAn 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.
This service was performed 83 times for 80 patientsTransitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.
This service was performed 31 times for 27 patientsTransitional care management services focus on coordinating and managing your care after you leave the hospital. For moderate complexity problems, this involves managing your medications, arranging further treatments, and ensuring you have the necessary follow-ups.
This service was performed 15 times for 14 patientsPhysician Visit Costs
The typical physician office visit costs for Medicare beneficiaries in this area are: $34.35 for a new patient copayment and $26.26 for an established patient copayment.
The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.
For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.
The prices below reflect the costs for new and established patients in the 60010 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99204
- Average New Patient Price $137.43
- Minimum New Patient Price $59.81
- Maximum New Patient Price $181.38
- Average New Patient Copayment $34.35
- Minimum New Patient Copayment $14.95
- Maximum New Patient Copayment $45.34
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99214
- Average Established Patient Price $105.07
- Minimum Established Patient Price $19.15
- Maximum Established Patient Price $147.12
- Average Established Patient Copayment $26.26
- Minimum Established Patient Copayment $4.78
- Maximum Established Patient Copayment $36.78
* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.
Find Provider Hospital Affiliations - Privileges
Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.
Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Seng Leong is affiliated with the following medical facilities:
| Hospital Name | Address | Phone | Hospital Type | Overall Rating |
|---|---|---|---|---|
| ADVOCATE SHERMAN HOSPITAL | 1425 NORTH RANDALL ROAD ELGIN, IL 60123 | (847) 742-9800 | Acute Care Hospitals | |
| ADVOCATE LUTHERAN GENERAL HOSPITAL | 1775 DEMPSTER ST PARK RIDGE, IL 60068 | (847) 723-2210 | Acute Care Hospitals | |
| ADVOCATE GOOD SHEPHERD HOSPITAL | 450 WEST HIGHWAY 22 BARRINGTON, IL 60010 | (847) 381-9600 | Acute Care Hospitals |
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1487750790, we treat the final digit (0) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 70 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 12 providers are registered at the same or a nearby location.
BARRINGTON, IL 60010
BARRINGTON, IL 60010
BARRINGTON, IL 60010
BARRINGTON, IL 60010
BARRINGTON, IL 60010
BARRINGTON, IL 60010
BARRINGTON, IL 60010
BARRINGTON, IL 60010
BARRINGTON, IL 60010
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1487750790, enumerated as an "individual" on September 15, 2006.
The provider is located at 27750 W HIGHWAY 22 BARRINGTON, IL 60010 and the phone number is (847) 381-5800.
Internal Medicine with taxonomy code 207R00000X.
The provider might be accepting Accepts: Medicare, Medicaid and Railroad Medicare. Please consult your insurance carrier or call the provider to verify.
Seng Leong is affiliated with: ADVOCATE SHERMAN HOSPITAL, ADVOCATE LUTHERAN GENERAL HOSPITAL and ADVOCATE GOOD SHEPHERD HOSPITAL.