Oscar Javier De La Rosa
Family Nurse Practitioner · Worcester, MA
Oscar Javier De La Rosa is a family nurse practitioner with a practice address in Worcester, Massachusetts, and NPI 1326701749, issued on Oct 21, 2021. Check the license (Massachusetts RN2357635, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Oscar Javier De La Rosa
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- RN2357635 MA
Self-reported in NPPES; status is on the state search - Practice location
- 19 Tacoma St, Worcester, MA 01605
- Phone
- (508) 532-7331
- Enumerated
- Oct 21, 2021
- Record last updated
- Jun 27, 2024
- Medicare enrollment
- Enrolled (PECOS I20240730000071); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 2024
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →
Also registered at 19 Tacoma St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mary Achia-Larbi, RNRegistered Nurse1265132294
- Ama Ahenkorah, FNPFamily Nurse Practitioner1952553232
- Ali Aji, BDSGeneral Practice Dentistry1073145637
- Fior Alba, RNRegistered Nurse1932704921
Verify Oscar Javier De La Rosa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2357635Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family nurse practitioner in 2024
24 Medicare Part D claims, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
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
- Edward M Kennedy Community Health Center IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Oscar Javier De La Rosa among 4,724 family nurse practitioner records in Massachusetts
Oscar Javier De La Rosa is one of 4,724 family nurse practitioner records with a practice address in Massachusetts. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 67% of them.
- NPI issued2021 · 67% of these records are older, 28% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2024 · median 2019 among the 2,704 with a school on file
- Record last updated2024 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
177 family nurse practitioner records list a practice address in Worcester
They are 177 of the 13,166 NPPES records with a practice address in Worcester, and 4,724 family nurse practitioner records in Massachusetts.
All 4,724 in Massachusetts → Every provider in Worcester → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Ama Ahenkorah, FNPWorcester, MA 016051952553232
- Svetlana Borochin, N.PWorcester, MA 016051609128149
- Jessica Deglialberti, N.P.-CWorcester, MA 016051689920993
- Lyndsey Digiorgio, FNPWorcester, MA 016051851661029
- Robynn Eisley, FNPWorcester, MA 016051467637702
- Lorraine LoretzWorcester, MA 016051649202441
- Jennifer Markey, NPWorcester, MA 016051083800916
- Donna Raymond, FNPWorcester, MA 016051407817687
Common questions
What is Oscar Javier De La Rosa's NPI number?
Oscar Javier De La Rosa's National Provider Identifier (NPI) is 1326701749, issued on Oct 21, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Oscar Javier De La Rosa located?
The NPPES record lists a practice address at 19 Tacoma St, Worcester, MA, 01605. Phone: (508) 532-7331. Providers update this record themselves, so call before visiting.
How can I verify Oscar Javier De La Rosa's license?
NPPES lists Massachusetts license number RN2357635, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Oscar Javier De La Rosa prescribe under Medicare Part D?
In 2024, Oscar Javier De La Rosa had 24 Medicare Part D claims; the average among family nurse practitioner prescribers was 1,305. 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.