Ariel Warren
Primary Care Nurse Practitioner · Belmont, MA
Ariel Warren is a primary care nurse practitioner with a practice address in Belmont, Massachusetts, and NPI 1538661582, issued on Mar 6, 2018. Check the license with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ariel Warren
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License number
- F308579-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 115 Mill St, Belmont, MA 02478
- Phone
- (617) 855-2118
- Enumerated
- Mar 6, 2018
- Record last updated
- Jul 10, 2026
- Medicare enrollment
- Enrolled (PECOS I20201209001646); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest primary care nurse practitioner records → All 376 in Massachusetts → Look up another NPI →
Also registered at 115 Mill St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Madeleine AllenStudent in an Organized Health Care Education/Training Program1205553971
- Danielle Alleven, PSY.D.Clinical Psychologist1891741153
Verify Ariel Warren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average primary care nurse practitioner in 2024
397 Medicare Part D claims for 35 beneficiaries, against an average of 1,492 among the 5,992 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Risperidone69 claims
- Sertraline Hcl61 claims
- Quetiapine Fumarate52 claims
- Mirtazapine41 claims
- Gabapentin31 claims
- Escitalopram Oxalate30 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.
Bills Medicare through one group practice
- Mass General Brigham Medical Group Suburban Massachusetts IncNewton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ariel Warren among 376 primary care nurse practitioner records in Massachusetts
Ariel Warren 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 2018, is newer than 52% of them.
- NPI issued2018 · 52% of these records are older, 44% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2017 · median 2019 among the 196 with a school on file
- Record last updated2026 · 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 Belmont → Primary Care Nurse Practitioner nationwide →
The 8 primary care nurse practitioner records with the nearest ZIP codes
- Elizabeth Myers, NPArlington, MA 024761013715747
- Patricia Camden, A-GPCNPWellesley Hills, MA 024811992150502
- Lorelei Dwyer, AGPCNP-BCWellesley, MA 024811871982454
- Colleen Rooney, NPWellesley, MA 024811053448365
- Cheryl Soderlund, ANP-BC, GNP-BC, CDEWellesley, MA 024811205964665
- Barbara Stjohn, N.P.Wellesley, MA 024811275886285
- Kara Sullivan, CNPWellesley, MA 024811366813263
- Maureen Walsh, RN,C,GNP,CDEWellesley, MA 024811548397268
Common questions
What is Ariel Warren's NPI number?
Ariel Warren's National Provider Identifier (NPI) is 1538661582, issued on Mar 6, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Ariel Warren located?
The NPPES record lists a practice address at 115 Mill St, Belmont, MA, 02478. Phone: (617) 855-2118. Providers update this record themselves, so call before visiting.
How can I verify Ariel Warren's license?
Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Ariel Warren prescribe under Medicare Part D?
In 2024, Ariel Warren had 397 Medicare Part D claims for 35 beneficiaries; 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.