Ronald Castillo, APRN
Nurse Practitioner · New Haven, CT
Ronald Castillo, APRN is a nurse practitioner with a practice address in New Haven, Connecticut, and NPI 1174871719, issued on Aug 28, 2012. Check the license (Connecticut 5048, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ronald Castillo
- Credential
- APRN
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 5048 CT
Self-reported in NPPES; status is on the state search - Practice location
- 20 York St, New Haven, CT 06510
- Phone
- (203) 688-4748
- Enumerated
- Aug 28, 2012
- Record last updated
- Dec 11, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (203) 688-4740
- Medicare enrollment
- Enrolled (PECOS I20140610001117); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 922 in Connecticut → Look up another NPI →
Also registered at 20 York St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cyrena Abbasi, MDStudent in an Organized Health Care Education/Training Program1609703289
- Ali Abboud, MD, MBAStudent in an Organized Health Care Education/Training Program1942943097
- Basil Abdalla, MDStudent in an Organized Health Care Education/Training Program1154905057
- Jasmina AbdallaStudent in an Organized Health Care Education/Training Program1700638590
- Sarah AbdallahPsychiatry Physician1740800952
- Usama Abdelghany, PHARM DOncology Pharmacist1548827843
Verify Ronald 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 5048Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average nurse practitioner in 2024
99 Medicare Part D claims for 48 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate14 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 MIPS final score for 2023 (Medicare payment program): 93.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Northeast Medical Group IncNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald Castillo among 922 nurse practitioner records in Connecticut
Ronald Castillo, APRN is one of 922 nurse practitioner records with a practice address in Connecticut. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 37% of them.
- NPI issued2012 · 37% of these records are older, 59% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2012 · median 2018 among the 522 with a school on file
- Record last updated2013 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
117 nurse practitioner records list a practice address in New Haven
They are 117 of the 9,793 NPPES records with a practice address in New Haven, and 922 nurse practitioner records in Connecticut.
All 922 in Connecticut → Every provider in New Haven → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Vicky Amon-Perpetua, APRNNew Haven, CT 065101437378809
- Lisa Barbarotta, APRNNew Haven, CT 065101124317888
- Cindy Boutilier, APRNNew Haven, CT 065101710280136
- Allison Cable, APRNNew Haven, CT 065101265532063
- Julie Dunn, APRNNew Haven, CT 065101982745873
- Carol Eggers, APRNNew Haven, CT 065101689664062
- Sharon Evans-Benard, APRNBCNew Haven, CT 065101881631265
- Irene Haight, APRNNew Haven, CT 065101437330602
Common questions
What is Ronald Castillo, APRN's NPI number?
Ronald Castillo, APRN's National Provider Identifier (NPI) is 1174871719, issued on Aug 28, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Castillo, APRN located?
The NPPES record lists a practice address at 20 York St, New Haven, CT, 06510. Phone: (203) 688-4748. Providers update this record themselves, so call before visiting.
How can I verify Ronald Castillo, APRN's license?
NPPES lists Connecticut license number 5048, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Ronald Castillo, APRN prescribe under Medicare Part D?
In 2024, Ronald Castillo, APRN had 99 Medicare Part D claims for 48 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Ronald Castillo, APRN's MIPS final score?
The 2023 MIPS final score is 93.3 of 100. 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.