Margot Valerie Marrero-Stein, RN-PNP
Pediatric Nurse Practitioner · Valhalla, NY
Margot Valerie Marrero-Stein, RN-PNP is a pediatric nurse practitioner with a practice address in Valhalla, New York, and NPI 1861662975, issued on Mar 4, 2008. Check the license (New York F381930-1, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Margot Valerie Marrero-Stein
- Credential
- RN-PNP
- Primary taxonomy
- Pediatric Nurse Practitioner 363LP0200X
- License number
- F381930-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 503 Grasslands RD, Valhalla, NY 10595
- Phone
- (914) 304-5300
- Enumerated
- Mar 4, 2008
- Record last updated
- Mar 4, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (914) 345-1753
- Entity
- Type 1 · individual
8 nearest pediatric nurse practitioner records → All 1,800 in New York → Look up another NPI →
Also registered at 503 Grasslands RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gabriela Aguirre, MS IN EDUCATIONSpecialist1104567817
- Daiana Amieiro, M.A TSSLD SLPSpeech-Language Pathologist1144589029
- Katharine Anderson, SLPSpeech-Language Pathologist1114265329
- Jessica Askar, NPPediatric Nurse Practitioner1134668478
- Elizabeth Asprea, MSSpecialist1962764803
- Natasha Bamji, M.D.Pediatric Gastroenterology Physician1922267103
Verify Margot Valerie Marrero-Stein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license F381930-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average pediatric nurse practitioner in 2024
26 Medicare Part D claims, against an average of 206 among the 854 providers of this specialty who prescribed in Part D. Brand-name drugs were 88% of claims.
Most prescribed
- Cerdelga23 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.
Industry payments in 2024: $6,404.53
11 payments; by number, the most common kind was travel and lodging; the largest payer was Genzyme Corporation. The 7,169 providers of this specialty with any payment received $330.95 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.
Margot Valerie Marrero-Stein among 1,800 pediatric nurse practitioner records in New York
Margot Valerie Marrero-Stein, RN-PNP is one of 1,800 pediatric nurse practitioner records with a practice address in New York. 31% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 31% of them.
- NPI issued2008 · 31% of these records are older, 64% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileNo · 7% of these records are
- Record last updated2008 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 pediatric nurse practitioner records list a practice address in Valhalla
They are 24 of the 2,105 NPPES records with a practice address in Valhalla, and 1,800 pediatric nurse practitioner records in New York.
All 1,800 in New York → Every provider in Valhalla → Pediatric Nurse Practitioner nationwide →
The 8 pediatric nurse practitioner records with the nearest ZIP codes
- Jessica Askar, NPValhalla, NY 105951134668478
- Ebone Brown, NPValhalla, NY 105951386879146
- Lily Chan, CPNPValhalla, NY 105951972624187
- Constance Colter-Leonick, PNPValhalla, NY 105951881727733
- Margaretann Decicco Tagliagambe, PNPValhalla, NY 105951841467453
- Therese Harrison, APRNValhalla, NY 105951780967992
- Tamar Horowitz, NPValhalla, NY 105951154756211
- Patricia Krumholtz-Belkin, PNP,RNValhalla, NY 105951154396554
Common questions
What is Margot Valerie Marrero-Stein, RN-PNP's NPI number?
Margot Valerie Marrero-Stein, RN-PNP's National Provider Identifier (NPI) is 1861662975, issued on Mar 4, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Margot Valerie Marrero-Stein, RN-PNP located?
The NPPES record lists a practice address at 503 Grasslands RD, Valhalla, NY, 10595. Phone: (914) 304-5300. Providers update this record themselves, so call before visiting.
How can I verify Margot Valerie Marrero-Stein, RN-PNP's license?
NPPES lists New York license number F381930-1, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Margot Valerie Marrero-Stein, RN-PNP prescribe under Medicare Part D?
In 2024, Margot Valerie Marrero-Stein, RN-PNP had 26 Medicare Part D claims; the average among pediatric nurse practitioner prescribers was 206. 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.