NPPES file of Aug 9, 2026

Allergy & Immunology Physician in Colorado

102 NPPES records list allergy & immunology physician with a practice address in Colorado, 1.7 per 100,000 residents, the 3rd highest rate of 51. Denver and Lakewood have the most; each record links to the provider's NPI and the Colorado license search. Page 3 of 3.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207K00000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Denver has the most, 29

  1. Denver29
  2. Lakewood15
  3. Fort Collins10
  4. Colorado Springs7
  5. Aurora6

Allergy & Immunology Physician records in Colorado

  1. Erin Willits, MDFort Collins, CO 805281962766402
  2. Celisse Zabalo, MDAurora, CO 800451700465200

Source: CMS NPPES, primary taxonomy 207K00000X: records by practice city and the list of records, file of Aug 9, 2026.

Colorado ranks 3 of 51 per resident

  1. District of Columbia2.9
  2. Maryland1.7
  3. Colorado1.7
  4. Massachusetts1.7
  5. New York1.6
  6. 50 states and D.C.1.2

Source: CMS NPPES, primary taxonomy 207K00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

69.6% of these records appear in a Medicare file, against 80.0% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Colorado69.6%
  2. United States80.0%

Allergy & Immunology Physician records in Colorado, measured

  • In a Medicare file71 of 102 · 69.6% here, 80.0% nationally
  • In the CMS Doctors and Clinicians file55 · 53.9% here, 65.7% nationally
  • Not updated in five years or more73 · 71.6% here, 57.3% nationally
  • Median graduation year2006 · the 55 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207K00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

102 NPPES records list allergy & immunology physician (207K00000X) as their primary taxonomy with a practice address in Colorado: 1.7 per 100,000 residents against 1.2 nationally (50 states and D.C.). Denver has 29 of them (28%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Georgia107
  2. Maryland108
  3. Washington90
  4. Arizona88

States with a similar rate per 100,000

  1. Massachusetts1.7
  2. New York1.6
  3. Connecticut1.6
  4. Virginia1.6

The largest states

  1. California444
  2. Texas327
  3. New York311
  4. Florida204
  5. Pennsylvania183

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.