California and Texas Allergy Clinics

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California and Texas Allergy Clinics

There are approximately 214 allergy clinics in California and 140 in Texas. Additionally, 30 allergy clinics in California and Texas that focus on allergy triggers other than food and provide sublingual immunotherapy have been compiled on the attached spreadsheet.

California Allergy Clinics

Texas Allergy Clinics

Number of Allergy Clinics in California

  • Doctor.com has the most comprehensive list of allergists and immunologists on the Internet and notes that there are 643 allergists and immunologists in California.
  • Los Angeles has the most allergists and immunologists with 60, San Diego follows with 42, and San Francisco is in third with 33.
  • Since Doctor.com provides the number of individual allergists and immunologists and not the number of allergy clinics, the number of clinics had to be estimated by taking the average number of allergists and immunologists in a California clinic based on the 15 clinics identified on the attached spreadsheet. This number is 3.2, which is rounded down to 3.
  • Assuming there are an average of three allergists and immunologists per allergy clinic in California, the estimated number of allergy clinics in the state is 214.

Number of Allergy Clinics in Texas

  • Doctor.com notes that there are 419 allergists and immunologists in Texas.
  • Houston has the most allergists and immunologists with 60, San Antonio follows with 43, and Austin is in third with 37.
  • Since Doctor.com provides the number of individual allergists and immunologists and not the number of allergy clinics, the number of clinics had to be estimated by taking the average number of allergists and immunologists in a Texas clinic based on the 15 clinics identified on the attached spreadsheet. This number is 3.1, which is rounded down to 3.
  • Assuming there are an average of three allergists and immunologists per allergy clinic in Texas, the estimated number of allergy clinics in the state is 140.

Strategy

To identify 30 allergy clinics in California and Texas, we filtered our findings to only include clinics that focus on allergy triggers other than food and provided sublingual immunotherapy. We were successful at finding 30 clinics that met our criteria, but none of them had pricing available on their websites. All clinics require interested parties to contact them directly for pricing. We assume this is because there are different prices based on insurance or cash payments.

The number of clinics in California and Texas was trickier because despite searching in Census Bureau reports, specialty publications focused on the allergy industry, and trusted media articles from sources such as Forbes, Inc., USAToday, and others, we were unable to find a direct answer to this question. We attempted to use business listing sites to determine the number of allergy clinics in each state, but none of them had a similar number, which led us to believe that they were not accurate. Doctor.com is considered one of the most comprehensive doctor listing sites available and reaches over 100 million patients every month. This site also provided a direct number of board certified allergists and immunologists in each state, which allowed us to triangulate the approximate number of allergy clinics in each state.

First, we had to find the average number of board certified allergists and immunologists per clinic for each state. Using the sample of 15 clinics that we identified in each state, we used a spreadsheet calculation (=average(c2:c16), which can be seen in row 17, column C of each tab, to determine the average number of doctors per clinic for each state. Since Doctor.com only provides the number of allergists and immunologists who are board certified, we only included board certified physicians in our count as well. We did not count PAs, MAs, RNs, PhDs, or any other non-board certified staff member. This allowed us to get the average number of doctors per clinic in each state, which happened to be three for both California and Texas.

Then, we divided the total number of allergists and immunologists in each state by three to obtain an approximate number of allergy clinics in each state. The calculations are as follows:

California: 643 / 3 = 214.33, rounded to 214.
Texas: 419 / 3 = 139.66, rounded to 140.
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