NPPES file of Aug 9, 2026

Alexandra A. Horwitz, M.D.

Pediatric Allergy/Immunology Physician · Hershey, PA

Alexandra A. Horwitz, M.D. is a pediatric allergy/immunology physician with a practice address in Hershey, Pennsylvania, and NPI 1164416855, issued on Sep 8, 2005. Check the license (Pennsylvania MD426965, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1164416855
Name
Alexandra A. Horwitz
Credential
M.D.
Primary taxonomy
Pediatric Allergy/Immunology Physician 2080P0201X
License number
MD426965 PA
Self-reported in NPPES; status is on the state search
Practice location
500 University Dr, Hershey, PA 17033
Phone
(800) 243-1455
Enumerated
Sep 8, 2005
Record last updated
Jul 23, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(717) 531-0397
Medicaid ID
101354444 PA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 500 University Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Victor Abarca, CRNACertified Registered Nurse Anesthetist1003575853
  2. Aiza Abbas, MDStudent in an Organized Health Care Education/Training Program1164312500
  3. Fatemeh Abbasi, MDPulmonary Disease Physician1750878625
  4. Andrea Abbe, LDNRegistered Dietitian1366623795
  5. Mahdi Abdallah, MDStudent in an Organized Health Care Education/Training Program1497457360
  6. Ashraf Abdelhalim, MDAnesthesiology Physician1356931729

Verify Alexandra A. Horwitz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
    Search for license MD426965    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Pennsylvania license search

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Industry payments in 2024: $196.56

3 payments; by number, the most common kind was education; the largest payer was Regeneron Healthcare Solutions, Inc. The 289 providers of this specialty with any payment received $7,101.54 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alexandra Horwitz$196.56
  2. Specialty average$7,101.54

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Pediatric Allergy/Immunology Physician providers in Pennsylvania

There are 43 pediatric allergy/immunology physician records in Pennsylvania.

All 43 in Pennsylvania → Every provider in Hershey →

Other pediatric allergy/immunology physician records in Pennsylvania

  1. Kevin AckermanPhiladelphia, PA1255950150
  2. David Anmuth, MDDanville, PA1700913290
  3. Talia Arceri, MDPhiladelphia, PA1528529914
  4. Puneet Bajaj, MDForty Fort, PA1770734378
  5. Neeti Bhardwaj, M.D.Hershey, PA1134311533
  6. Terri Brown-Whitehorn, M.D.Philadelphia, PA1659391167
  7. Antonella Cianferoni, MDPhiladelphia, PA1609993609
  8. Daniel Conway, MDPhiladelphia, PA1043274376
  9. James Corry, M.D.Philadelphia, PA1205827490
  10. Sigrid Daveiga, M.D.Philadelphia, PA1417162017

Common questions

What is Alexandra A. Horwitz, M.D.'s NPI number?

Alexandra A. Horwitz, M.D.'s National Provider Identifier (NPI) is 1164416855, issued on Sep 8, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Alexandra A. Horwitz, M.D. located?

The NPPES record lists a practice address at 500 University Dr, Hershey, PA, 17033. Phone: (800) 243-1455. Providers update this record themselves, so call before visiting.

How can I verify Alexandra A. Horwitz, M.D.'s license?

NPPES lists Pennsylvania license number MD426965, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

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

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.