Eddy A. Castillo
Specialist · Fairfield, CT
Eddy A. Castillo is a specialist with a practice address in Fairfield, Connecticut, and NPI 1225020134, issued on Aug 17, 2005. Check the license (Connecticut 039515, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Eddy A. Castillo
- Primary taxonomy
- Specialist 174400000X
- License number
- 039515 CT
Self-reported in NPPES; status is on the state search - Practice location
- 425 Post RD, Fairfield, CT 06824
- Phone
- (203) 292-9000
- Enumerated
- Aug 17, 2005
- Record last updated
- Oct 30, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (203) 292-1700
- Medicare enrollment
- Enrolled (PECOS I20110609000674); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest specialist records → All 397 in Connecticut → Look up another NPI →
Also registered at 425 Post RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Eric AlterCardiovascular Disease Physician1225370901
- Angelina AngeliFamily Nurse Practitioner1730669920
- Paul Berard, MDHematology & Oncology Physician1699773804
- Emil Blanco, MDSpecialist1134111040
- Brian ClancyPhysician Assistant1083151898
Verify Eddy A. Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 039515Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average specialist in 2024
3,775 Medicare Part D claims for 882 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole928 claims
- Pantoprazole Sodium398 claims
- Linzess166 claims
- Ondansetron Odt158 claims
- Sod Sulf-Potass Sulf-Mag Sulf157 claims
- Clenpiq141 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): 85.1 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $4,099.29
172 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Connecticut GI PLLCHartford, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eddy A. Castillo among 397 specialist records in Connecticut
Eddy A. Castillo is one of 397 specialist records with a practice address in Connecticut. 25% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileYes · 25% of these records are
- In the CMS Doctors and Clinicians fileYes · 15% of these records are
- Graduated1991 · median 1990 among the 59 with a school on file
- Record last updated2007 · 81% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 specialist records list a practice address in Fairfield
They are 15 of the 1,446 NPPES records with a practice address in Fairfield, and 397 specialist records in Connecticut.
All 397 in Connecticut → Every provider in Fairfield → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Donna Alves, LCCC, LPCFairfield, CT 068241932594777
- Emil Blanco, MDFairfield, CT 068241134111040
- Nicole CallowayFairfield, CT 068241710262209
- Gena Cobrin, MDFairfield, CT 068241205828126
- Edward Grossman, MDFairfield, CT 068241629060827
- Maria Horga, M.DFairfield, CT 068241154463404
- Richard Lopatin, MDFairfield, CT 068241598757403
- Christopher Mastino, M.D.Fairfield, CT 068241740230358
Common questions
What is Eddy A. Castillo's NPI number?
Eddy A. Castillo's National Provider Identifier (NPI) is 1225020134, issued on Aug 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Eddy A. Castillo located?
The NPPES record lists a practice address at 425 Post RD, Fairfield, CT, 06824. Phone: (203) 292-9000. Providers update this record themselves, so call before visiting.
How can I verify Eddy A. Castillo's license?
NPPES lists Connecticut license number 039515, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Eddy A. Castillo prescribe under Medicare Part D?
In 2024, Eddy A. Castillo had 3,775 Medicare Part D claims for 882 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Eddy A. Castillo's MIPS final score?
The 2023 MIPS final score is 85.1 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.