DR. STEPHEN CURTIS WONG M.D.
NPI 1104977008
Allergy & Immunology - Allergy in Hacienda Heights, CA

NPI Status: Active since January 16, 2007

Contact Information

1850 S AZUSA AVE
SUITE 206
HACIENDA HEIGHTS, CA
ZIP 91745
Phone: (626) 810-5450
Fax: (626) 810-0391

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  • Individual
  • Male
  • Years of Experience 44
  • Allergy & Immunology
  • Allergy
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About STEPHEN WONG

This page provides the complete NPI Profile along with additional information for Stephen Wong, a provider established in Hacienda Heights, California with a medical specialization in Allergy & Immunology, focusing in allergy and more than 44 years of experience. He graduated from University Of California, San Francisco School Of Medicine in 1982. The healthcare provider is registered in the NPI registry with number 1104977008 assigned on January 2007. The practitioner's primary taxonomy code is 207KA0200X with license number G51644 (CA). The provider is registered as an individual and his NPI record was last updated May 2026.

NPI
1104977008
Provider Name
DR. STEPHEN CURTIS WONG M.D.
Gender
Male
Entity Type
Individual
Location Address
1850 S AZUSA AVE SUITE 206 HACIENDA HEIGHTS, CA 91745
Location Phone
(626) 810-5450
Location Fax
(626) 810-0391
Mailing Address
1850 S AZUSA AVE STE 206 HACIENDA HEIGHTS, CA 91745
Mailing Phone
(626) 810-5450
Mailing Fax
(626) 810-0391
Medical School Name
UNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduation Year
1982
Is Sole Proprietor?
Yes
Enumeration Date
01-16-2007
Last Update Date
05-29-2026
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Location Map

Secondary Locations

  • 330 S Garfield Ave Ste 116
    Alhambra, CA 91801
    (626) 284-3400
  • 207 S Santa Anita St Ste 335
    San Gabriel, CA 91776
    (760) 941-4444

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

Allergy & Immunology Allergy

Taxonomy Code
207KA0200X
Type
Allopathic & Osteopathic Physicians
License No.
G51644
License State
CA
Taxonomy Description
A physician who specializes in the diagnosis, treatment, and management of allergies. Source: National Uniform Claim Committee

Medicare Participation & PECOS Enrollment Status

Stephen Wong 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.

Stephen Wong 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: 9335286574

    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: I20091021000349

    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.

Drugs Administered Through DME

  • DME-Drugs Administered Through DME (DG000N)

    Budesonide, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose form, up to 0.5 mg (HCPCS:J7626)

    2 DME suppliers used 11 Medicare Claims 660 Services Paid

Durable Medical Equipment

  • DME-Other DME (DE000N)

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

    6 DME suppliers used 17 Medicare Claims 17 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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more

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.

This service was performed 142 times for 110 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more

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.

This service was performed 141 times for 109 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more

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.

This service was performed 13 times for 13 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more

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.

This service was performed 72 times for 72 patients

Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional

This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.

This service was performed 140 times for 31 patients

Professional service for multiple injections of allergen

The professional service for multiple injections of allergens involves administering small doses of specific allergens into your body. This is done to help your immune system become less sensitive to them, reducing your allergic reaction over time. It's a safe, effective way to manage allergies.

This service was performed 546 times for 41 patients

Professional service for preparation and provision of 1 or more antigens

This service involves the creation and supply of antigens, substances that stimulate your immune system to fight diseases. These antigens can be used in vaccines or allergy tests to help your body build defenses against specific health threats.

This service was performed 1,195 times for 39 patients

Test for allergy using allergenic extract

An allergy test with allergenic extract is a diagnostic method to identify substances causing allergic reactions. Small amounts of common allergens are introduced to your body, usually through skin pricks or blood tests. Your body's response helps determine your allergies.

This service was performed 1,838 times for 24 patients

Test for allergy using allergenic extract injected into skin

An allergy skin test involves injecting a small amount of allergenic extract into your skin. This test helps determine if you're allergic to specific substances. If allergic, a small red bump appears at the test site. It's safe and quick.

This service was performed 207 times for 19 patients

Test for allergy using skin patch

A skin patch test helps identify allergens causing skin reactions. Small patches with potential allergens are applied to your skin, usually on the back. After 48 hours, they are removed to check for reactions. It's a safe and effective way to diagnose allergies.

This service was performed 1,152 times for 18 patients

Reviews for DR. STEPHEN CURTIS WONG M.D.

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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 1104977008, we treat the final digit (8) 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 52. The final step is to find the difference between that total and the next multiple of ten (60 - 52 = 8).

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.

Pos 1
1
Doubled → 2
Pos 2
1
Unchanged
Pos 3
0
Doubled → 0
Pos 4
4
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
7
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
0
Unchanged
Pos 9
0
Doubled → 0
Check
8
Target digit
Regular digit Doubled digit Check digit

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.

1 → 2 0 → 0 9 → 18 → 9 7 → 14 → 5 0 → 0

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 1 + 0 + 4 + 1 + 8 + 7 + 1 + 4 + 0 + 0 + 24 = 52

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 52 is 60. The difference is the calculated check digit.

60 - 52 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1104977008.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Ophthalmology
1850 S AZUSA AVE, STE 107
HACIENDA HEIGHTS, CA 91745
Optometrist
1850 S AZUSA AVE, 107
HACIENDA HEIGHTS, CA 91745
Internal Medicine (Nephrology)
1850 S AZUSA AVE, STE 306
HACIENDA HEIGHTS, CA 91745
Internal Medicine
1850 S AZUSA AVE, SUITE 102
HACIENDA HEIGHTS, CA 91745
Pediatrics
1850 S AZUSA AVE, SUITE 205
HACIENDA HEIGHTS, CA 91745
Family Medicine
1850 S AZUSA AVE, SUITE 205
HACIENDA HEIGHTS, CA 91745
Internal Medicine
1850 S AZUSA AVE, SUITE 205
HACIENDA HEIGHTS, CA 91745
Family Medicine
1850 S AZUSA AVE, SUITE 205
HACIENDA HEIGHTS, CA 91745
Pediatrics
1850 S AZUSA AVE
HACIENDA HEIGHTS, CA 91745
Pediatrics
1850 S AZUSA AVE
HACIENDA HEIGHTS, CA 91745
Specialist
1850 S AZUSA AVE, SUITE 208
HACIENDA HEIGHTS, CA 91745
Pediatrics
1850 S AZUSA AVE
HACIENDA HEIGHTS, CA 91745
Internal Medicine
1850 S AZUSA AVE, SUITE 308
HACIENDA HEIGHTS, CA 91745
Internal Medicine
1850 S AZUSA AVE, SUITE 308
HACIENDA HEIGHTS, CA 91745
Internal Medicine
1850 S AZUSA AVE, SUITE 205
HACIENDA HEIGHTS, CA 91745
Family Medicine
1850 S AZUSA AVE, #60
HACIENDA HTS, CA 91745
Durable Medical Equipment & Medical Supplies
1850 S AZUSA AVE, SUITE 101
HACIENDA HEIGHTS, CA 91745
Internal Medicine
1850 S AZUSA AVE, SUITE 201
HACIENDA HEIGHTS, CA 91745
Dietitian, Registered
1850 S AZUSA AVE, SUITE 112
HACIENDA HEIGHTS, CA 91745
Otolaryngology
1850 S AZUSA AVE, # 207
HACIENDA HEIGHTS, CA 91745

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1104977008, enumerated as an "individual" on January 16, 2007.

The provider is located at 1850 S AZUSA AVE SUITE 206 HACIENDA HEIGHTS, CA 91745 and the phone number is (626) 810-5450.

Allergy & Immunology with taxonomy code 207KA0200X and a focus in Allergy.