NPPES file of Aug 9, 2026

Alfonso C. Castellucci, DO

Emergency Medicine Physician · Lakewood, CA

Alfonso C. Castellucci, DO is an emergency medicine physician with a practice address in Lakewood, California, and NPI 1821187717, issued on Oct 11, 2006. Check the license (California 20A14072, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821187717
Name
Alfonso C. Castellucci
Credential
DO
Primary taxonomy
Emergency Medicine Physician 207P00000X
License numbers
20A14072 CA
DO3056 NV
Self-reported in NPPES; status is on the state search
Practice location
3700 South St, Lakewood, CA 90712
Phone
(562) 531-2550
Enumerated
Oct 11, 2006
Record last updated
Dec 30, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20220110001642); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 3700 South St

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

  1. Omowunmi Ajibola, MDVascular & Interventional Radiology Physician1699157396
  2. Kristin Bagiu, LM, RN, NP-CNurse Practitioner1023137403
  3. James Chapman, DOEmergency Medicine Physician1689606790
  4. Marvin Fields, M.D.Diagnostic Radiology Physician1063461333
  5. Omran Gdara, MDEmergency Medicine Physician1013658947
  6. Russell Gilbertson, MDAnesthesiology Physician1326077033

Verify Alfonso C. Castellucci in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A14072    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.

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41% more Medicare Part D claims than the average emergency medicine physician in 2024

318 Medicare Part D claims for 187 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 33 claims were for opioids.

  1. Alfonso Castellucci318
  2. Specialty average226

Most prescribed

  1. Ondansetron Odt46 claims
  2. Ibuprofen31 claims
  3. Hydrocodone-Acetaminophen26 claims
  4. Cephalexin20 claims
  5. Prednisone20 claims
  6. Doxycycline Hyclate19 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.

Bills Medicare through one group practice

  1. Fremont Emergency Services Scherr LtdLas Vegas, NV

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Emergency Medicine Physician providers in California

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

All 7,751 in California → Every provider in Lakewood →

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 Alfonso C. Castellucci, DO's NPI number?

Alfonso C. Castellucci, DO's National Provider Identifier (NPI) is 1821187717, issued on Oct 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Alfonso C. Castellucci, DO located?

The NPPES record lists a practice address at 3700 South St, Lakewood, CA, 90712. Phone: (562) 531-2550. Providers update this record themselves, so call before visiting.

How can I verify Alfonso C. Castellucci, DO's license?

NPPES lists California license number 20A14072, 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 Alfonso C. Castellucci, DO prescribe under Medicare Part D?

In 2024, Alfonso C. Castellucci, DO had 318 Medicare Part D claims for 187 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

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.