NPPES file of Aug 9, 2026

Aaron Andrew Abrahamsen, M.D.

Emergency Medicine Physician · Chula Vista, CA

Aaron Andrew Abrahamsen, M.D. is an emergency medicine physician with a practice address in Chula Vista, California, and NPI 1427204023, issued on Aug 14, 2008. Check the license (California A107736, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1427204023
Name
Aaron Andrew Abrahamsen
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License numbers
A107736 CA
AC3890313M001 IL
Self-reported in NPPES; status is on the state search
Practice location
751 Medical Center CT, Chula Vista, CA 91911
Phone
(619) 502-5825
Enumerated
Aug 14, 2008
Record last updated
Feb 2, 2010 (not updated in 16 years: call before relying on the address or phone)
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 751 Medical Center CT

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

  1. Babak Abedi, M.D.Anesthesiology Physician1225366396
  2. Talal Al Quraini, M.D.Emergency Medical Services (Emergency Medicine) Physician1316955446
  3. Nancy Alexander-Wadel, RD, CDERegistered Dietitian1700913936
  4. Karrar Ali, D.O.Emergency Medicine Physician1164414827
  5. Crisamar Anunciado, NPFamily Nurse Practitioner1932386265
  6. Andy Apsay, RNAdult Psychiatric/Mental Health Registered Nurse1649113796

Verify Aaron Andrew Abrahamsen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A107736
    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

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

427 Medicare Part D claims for 259 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 28 claims were for opioids.

  1. Aaron Abrahamsen427
  2. Specialty average226

Most prescribed

  1. Ibuprofen48 claims
  2. Ondansetron Odt43 claims
  3. Hydralazine Hcl29 claims
  4. Cefuroxime28 claims
  5. Gabapentin20 claims
  6. Naproxen19 claims

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.

The practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score76.7
  2. Costout of 100 · 30%97.1
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Aaron Andrew Abrahamsen among 7,751 emergency medicine physician records in California

Aaron Andrew Abrahamsen, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.

  • NPI issued2008 · 50% of these records are older, 46% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 59% of these records are
  • Record last updated2010 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Emergency Medicine Physician providers in California

There are 7,751 emergency medicine physician records in California.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Karrar Ali, D.O.Chula Vista, CA 919111164414827
  2. Gregg Bolotin, M.D.Chula Vista, CA 919111366451601
  3. Kevin Calhoun, M.D.Chula Vista, CA 919111144239401
  4. Thomas Calkins, M.D.Chula Vista, CA 919111720037518
  5. James Corbett-Detig, MDChula Vista, CA 919111902224686
  6. Jeffrey Overcash, MDChula Vista, CA 919111104814680
  7. Ran Regev, M.D.Chula Vista, CA 919111760412050
  8. Cathy Rogowski, M.D.Chula Vista, CA 919111407947435

Common questions

What is Aaron Andrew Abrahamsen, M.D.'s NPI number?

Aaron Andrew Abrahamsen, M.D.'s National Provider Identifier (NPI) is 1427204023, issued on Aug 14, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Aaron Andrew Abrahamsen, M.D. located?

The NPPES record lists a practice address at 751 Medical Center CT, Chula Vista, CA, 91911. Phone: (619) 502-5825. Providers update this record themselves, so call before visiting.

How can I verify Aaron Andrew Abrahamsen, M.D.'s license?

NPPES lists California license number A107736, 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 Aaron Andrew Abrahamsen, M.D. prescribe under Medicare Part D?

In 2024, Aaron Andrew Abrahamsen, M.D. had 427 Medicare Part D claims for 259 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

What is Aaron Andrew Abrahamsen, M.D.'s MIPS final score?

The 2023 MIPS final score is 94.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.

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.