DR. JOSHUA MICHAEL IAN DAVIDSON M.D., M.P.H.
NPI 1144343146
Allergy & Immunology in Redondo Beach, CA

NPI Status: Active since April 06, 2007

Contact Information

502 TORRANCE BLVD
REDONDO BEACH, CA
ZIP 90277
Phone: (310) 792-8393

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  • Individual
  • Male
  • Years of Experience 23
  • Allergy & Immunology
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About JOSHUA DAVIDSON

This page provides the complete NPI Profile along with additional information for Joshua Davidson, a provider established in Redondo Beach, California with a medical specialization in Allergy & Immunology and more than 23 years of experience. He graduated from University Of California, Geffen School Of Medicine in 2003. The healthcare provider is registered in the NPI registry with number 1144343146 assigned on April 2007. The practitioner's primary taxonomy code is 207K00000X with license number A88990 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1144343146
Provider Name
DR. JOSHUA MICHAEL IAN DAVIDSON M.D., M.P.H.
Other Name
DR. JOSHUA M DAVIDSON MD
Other Name Type
Professional Name (2)
Gender
Male
Entity Type
Individual
Location Address
502 TORRANCE BLVD REDONDO BEACH, CA 90277
Location Phone
(310) 792-8393
Mailing Address
PO BOX 35380 LAS VEGAS, NV 89133
Mailing Phone
(702) 579-3203
Medical School Name
UNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE
Graduation Year
2003
Is Sole Proprietor?
Yes
Enumeration Date
04-06-2007
Last Update Date
12-12-2025
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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

Taxonomy Code
207K00000X
Type
Allopathic & Osteopathic Physicians
License No.
A88990
License State
CA
Taxonomy Description
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • UHC Bronze Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care) - HMO
  • UHC Bronze Essential ($0 Virtual Urgent Care) - HMO
  • UHC Bronze Standard - HMO
  • UHC Bronze Standard+ (Dental + Vision) - HMO
  • UHC Gold Advantage ($0 Virtual Urgent Care, $8 Tier 2 Rx) - HMO
  • UHC Gold Advantage+ ($0 Virtual Urgent Care, $8 Tier 2 Rx, Dental + Vision) - HMO
  • UHC Gold Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, $8 Tier 2 Rx) - HMO
  • UHC Gold Copay Focus+ $0 Indiv Med Ded ($0 Virtual Urgent Care, $8 Tier 2 Rx, Dental + Vision) - HMO
  • UHC Gold Standard - HMO
  • UHC Silver Advantage ($0 Virtual Urgent Care, $5 Tier 2 Rx) - HMO
  • UHC Silver Advantage+ ($0 Virtual Urgent Care, $5 Tier 2 Rx, Dental + Vision) - HMO
  • UHC Silver Standard - HMO
  • UHC Silver Value ($0 Virtual Urgent Care) - HMO
  • UHC Silver Value+ ($0 Virtual Urgent Care, Dental + Vision) - HMO

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Medicare Participation & PECOS Enrollment Status

Joshua Davidson 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.

Joshua Davidson 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: 1052485208

    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: I20090912000139

    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

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.

New patient office or other outpatient visit, 30-44 minutes

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

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 723 times for 32 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 406 times for 14 patients

Professional service for preparation and provision of single-dose vial of allergen

This service involves preparing a single-dose vial of allergen for allergy testing or treatment. The allergen is carefully selected based on your specific allergy profile. The vial is prepared in a safe, sterile environment to ensure its purity and effectiveness.

This service was performed 337 times for 25 patients

Professional service for single injection of allergen

A single allergen injection is a procedure where a small amount of a specific allergen is injected into your body. This is done to test your body's reaction to the allergen or to help your immune system become less sensitive to it, reducing allergic symptoms.

This service was performed 230 times for 15 patients

Reviews for DR. JOSHUA MICHAEL IAN DAVIDSON M.D., M.P.H.

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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 1144343146, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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
4
Doubled → 8
Pos 4
4
Unchanged
Pos 5
3
Doubled → 6
Pos 6
4
Unchanged
Pos 7
3
Doubled → 6
Pos 8
1
Unchanged
Pos 9
4
Doubled → 8
Check
6
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 4 → 8 3 → 6 3 → 6 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 8 + 4 + 6 + 4 + 6 + 1 + 8 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1144343146.

Other Providers at the Same Location


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

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Internal Medicine
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Radiology (Diagnostic Radiology)
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Radiology (Diagnostic Radiology)
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Psychologist (Clinical)
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Family Medicine
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Family Medicine
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Family Medicine
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Radiology (Diagnostic Radiology)
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Non-Pharmacy Dispensing Site
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Podiatrist (Foot Surgery)
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REDONDO BEACH, CA 90277
Family Medicine
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Family Medicine
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REDONDO BEACH, CA 90277
Family Medicine
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REDONDO BEACH, CA 90277
Family Medicine
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REDONDO BEACH, CA 90277
Nurse Practitioner
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REDONDO BEACH, CA 90277
Family Medicine
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REDONDO BEACH, CA 90277
Family Medicine
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Nurse Practitioner (Family)
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Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1144343146, enumerated as an "individual" on April 06, 2007.

The provider is located at 502 TORRANCE BLVD REDONDO BEACH, CA 90277 and the phone number is (310) 792-8393.

Allergy & Immunology with taxonomy code 207K00000X.

The provider might be accepting Accepts: UnitedHealthcare. Please consult your insurance carrier or call the provider to verify.