Registry data as of Aug 27, 2026

Lyn Aborn, MD

Emergency Medicine Physician · Hayward, CA

Lyn Aborn, MD is an emergency medicine physician with a practice address in Hayward, California, and NPI 1891873659, issued on Nov 1, 2006. Check the license (California A92202, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1891873659
Name
Lyn Aborn
Credential
MD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
A92202 CA
Self-reported in NPPES; status is on the state search
Practice location
27400 Hesperian Blvd, Hayward, CA 94545
Phone
(510) 784-4000
Enumerated
Nov 1, 2006
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 27400 Hesperian Blvd

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

  1. Ahmed Alkoraishi, MDColon & Rectal Surgery Physician1609954478
  2. David Anderson, MDInternal Medicine Physician1659459410
  3. Eric Anderson, MDEmergency Medicine Physician1417035262
  4. Joel Angel, M.D.Student in an Organized Health Care Education/Training Program1669644571
  5. Marc Anker, MDObstetrics & Gynecology Physician1376621128
  6. Abubakr Asadulla, M.D.Internal Medicine Physician1881772648

Verify Lyn Aborn in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A92202
    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 California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

89% fewer Medicare Part D claims than the average emergency medicine physician in 2024

40 Medicare Part D claims for 30 beneficiaries, against an average of 355 among the 49,029 providers of this specialty who prescribed in Part D.

  1. Lyn Aborn40
  2. Specialty average355

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

26 emergency medicine physician records list a Hayward practice address

They are 26 of the 3,993 NPPES records with a Hayward practice address, and 7,133 emergency medicine physician records in California.

Other emergency medicine physician records in California

  1. Cooper Aakhus, MDStanford, CA1194351007
  2. Pyra Aarden, MDMartinez, CA1417058199
  3. Neal Aaron, D.O.Encinitas, CA1114283520
  4. Eric AaserudeWalnut Creek, CA1811491194
  5. Nader Abas, MDBarstow, CA1346288305
  6. Michael Abbo, MDNovato, CA1205819042
  7. Daniel Abbott, MDFullerton, CA1518907864
  8. Paul-Andre Abboud, M.D.Oakland, CA1710065503
  9. Mostafa Abdel-Hamid, MDStanford, CA1457918740
  10. Ashraf Abdel-KerimChino, CA1396961538

Common questions

What is Lyn Aborn, MD's NPI number?

Lyn Aborn, MD's National Provider Identifier (NPI) is 1891873659, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Lyn Aborn, MD located?

The NPPES record lists a practice address at 27400 Hesperian Blvd, Hayward, CA, 94545. Phone: (510) 784-4000. Providers update this record themselves, so call before visiting.

How can I verify Lyn Aborn, MD's license?

NPPES lists California license number A92202, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Lyn Aborn, MD prescribe under Medicare Part D?

In 2024, Lyn Aborn, MD had 40 Medicare Part D claims for 30 beneficiaries; the average among emergency medicine physician prescribers was 355. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.