Ronald Fernandez, MD
Emergency Medicine Physician · Berkeley Heights, NJ
Ronald Fernandez, MD is an emergency medicine physician with a practice address in Berkeley Heights, New Jersey, and NPI 1942373345, issued on Nov 16, 2006. Check the license on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ronald Fernandez
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 232439 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1 Diamond Hill RD, Berkeley Heights, NJ 07922
- Phone
- (908) 273-4300
- Enumerated
- Nov 16, 2006
- Record last updated
- Apr 26, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicaid ID
- 02570794 NY
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,754 in New Jersey → Look up another NPI →
Also registered at 1 Diamond Hill RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ronald Fernandez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical ExaminersCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average emergency medicine physician in 2024
189 Medicare Part D claims for 125 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 23 claims were for opioids.
Most prescribed
- Ondansetron Odt22 claims
- Prednisone20 claims
- Cephalexin18 claims
- Ondansetron Hcl15 claims
- Oxycodone-Acetaminophen12 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.
Ronald Fernandez among 1,754 emergency medicine physician records in New Jersey
Ronald Fernandez, MD is one of 1,754 emergency medicine physician records with a practice address in New Jersey. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 61% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 67% of these records are
- Record last updated2017 · 55% 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 New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 emergency medicine physician records list a practice address in Berkeley Heights
They are 27 of the 672 NPPES records with a practice address in Berkeley Heights, and 1,754 emergency medicine physician records in New Jersey.
All 1,754 in New Jersey → Every provider in Berkeley Heights → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Rajesh Geria, MDBerkeley Heights, NJ 079221700864410
- Miguel Giron, MDBerkeley Heights, NJ 079221912927930
- Costas Kaiafas, MDBerkeley Heights, NJ 079221528057866
- Kevin Kennedy, MDBerkeley Heights, NJ 079221639111735
- John Koliopoulos, DOBerkeley Heights, NJ 079221053353516
- Marc Levine, MDBerkeley Heights, NJ 079221609804418
- Manjushree Matadial, DOBerkeley Heights, NJ 079221568542686
- Marc Milano, MDBerkeley Heights, NJ 079221477540219
Common questions
What is Ronald Fernandez, MD's NPI number?
Ronald Fernandez, MD's National Provider Identifier (NPI) is 1942373345, issued on Nov 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Fernandez, MD located?
The NPPES record lists a practice address at 1 Diamond Hill RD, Berkeley Heights, NJ, 07922. Phone: (908) 273-4300. Providers update this record themselves, so call before visiting.
How can I verify Ronald Fernandez, MD's license?
Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ronald Fernandez, MD prescribe under Medicare Part D?
In 2024, Ronald Fernandez, MD had 189 Medicare Part D claims for 125 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.
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.