Diadette I. Hernandez, APRN
Nurse Practitioner · New Haven, CT
Diadette I. Hernandez, APRN is a nurse practitioner with a practice address in New Haven, Connecticut, and NPI 1396035382, issued on Apr 12, 2011. Check the license (Connecticut 4637, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Diadette I. Hernandez
- Credential
- APRN
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 4637 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
- Apr 12, 2011
- Record last updated
- May 3, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (203) 688-4740
- Medicare enrollment
- Enrolled (PECOS I20110513000135); 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.
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- 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 Diadette I. Hernandez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 4637Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average nurse practitioner in 2024
323 Medicare Part D claims for 110 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Most prescribed
- Eliquis24 claims
- Losartan Potassium17 claims
- Metoprolol Succinate17 claims
- Isosorbide Mononitrate Er15 claims
- Amlodipine Besylate14 claims
- Biktarvy12 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).
Industry payments in 2024: $55.20
1 payment: food and beverage; the largest payer was Zoll Services LLC (a/k/a Zoll LifeCor Corp). The 38,884 providers of this specialty with any payment received $791.64 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 2 group practices
- Northeast Medical Group IncNew Haven, CT
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diadette I. Hernandez among 922 nurse practitioner records in Connecticut
Diadette I. Hernandez, 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 2011, is newer than 35% of them.
- NPI issued2011 · 35% of these records are older, 63% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2010 · median 2018 among the 522 with a school on file
- Record last updated2017 · 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 Diadette I. Hernandez, APRN's NPI number?
Diadette I. Hernandez, APRN's National Provider Identifier (NPI) is 1396035382, issued on Apr 12, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Diadette I. Hernandez, 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 Diadette I. Hernandez, APRN's license?
NPPES lists Connecticut license number 4637, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Diadette I. Hernandez, APRN prescribe under Medicare Part D?
In 2024, Diadette I. Hernandez, APRN had 323 Medicare Part D claims for 110 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Diadette I. Hernandez, 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.