Maria Diaz, FNP-BC
Primary Care Nurse Practitioner · Springfield, MA
Maria Diaz, FNP-BC is a primary care nurse practitioner with a practice address in Springfield, Massachusetts, and NPI 1235558131, issued on Apr 8, 2014. Check the license (Massachusetts NP2261021, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Maria Diaz
- Credential
- FNP-BC
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License numbers
- NP2261021 MA
RN2261021 MA
Self-reported in NPPES; status is on the state search - Practice location
- 29 Josephine St Ste 3, Springfield, MA 01108
- Phone
- (413) 262-9890
- Enumerated
- Apr 8, 2014
- Record last updated
- Aug 9, 2024
- Entity
- Type 1 · individual
8 nearest primary care nurse practitioner records → All 376 in Massachusetts → Look up another NPI →
Verify Maria Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license NP2261021Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average primary care nurse practitioner in 2024
22 Medicare Part D claims, against an average of 1,492 among the 5,992 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.
Industry payments in 2024: $115.00
2 payments; by number, the most common kind was food and beverage; the largest payer was Topcon Healthcare, Inc. The 4,321 providers of this specialty with any payment received $625.13 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.
Maria Diaz among 376 primary care nurse practitioner records in Massachusetts
Maria Diaz, FNP-BC is one of 376 primary care nurse practitioner records with a practice address in Massachusetts. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 31% of them.
- NPI issued2014 · 31% of these records are older, 65% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2024 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP2300X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Primary Care Nurse Practitioner providers in Massachusetts
There are 376 primary care nurse practitioner records in Massachusetts.
All 376 in Massachusetts → Every provider in Springfield → Primary Care Nurse Practitioner nationwide →
The 8 primary care nurse practitioner records with the nearest ZIP codes
- Premila Nair, FNPSpringfield, MA 011081912962218
- Cindy Thompson, APRNSpringfield, MA 011091083508402
- Sanyu Walker, APRNSpringfield, MA 011071740613744
- Debra Tomaszewski, N.P.Springfield, MA 011051437570819
- Sara Friedman, NPSpringfield, MA 011041356829121
- Ashley Rosati, CNPSpringfield, MA 011041447611041
- Tammy Sears-Langevin, APRN,NNP-BC,CPNPSpringfield, MA 011041255633665
- Katherine Waterman, N.P-CSpringfield, MA 011041962767905
Common questions
What is Maria Diaz, FNP-BC's NPI number?
Maria Diaz, FNP-BC's National Provider Identifier (NPI) is 1235558131, issued on Apr 8, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Maria Diaz, FNP-BC located?
The NPPES record lists a practice address at 29 Josephine St Ste 3, Springfield, MA, 01108. Phone: (413) 262-9890. Providers update this record themselves, so call before visiting.
How can I verify Maria Diaz, FNP-BC's license?
NPPES lists Massachusetts license number NP2261021, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Maria Diaz, FNP-BC prescribe under Medicare Part D?
In 2024, Maria Diaz, FNP-BC had 22 Medicare Part D claims; the average among primary care nurse practitioner prescribers was 1,492. 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.