Mary-Ellen Cooper, NP
Nurse Practitioner · Watertown, MA
Mary-Ellen Cooper, NP is a nurse practitioner with a practice address in Watertown, Massachusetts, and NPI 1689989568, issued on Aug 16, 2010. Check the license (Massachusetts RN216769, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary-Ellen Cooper
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- RN216769 MA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Dexter Ave, Watertown, MA 02472
- Phone
- (617) 600-3195
- Enumerated
- Aug 16, 2010
- Record last updated
- Aug 16, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (617) 924-1207
- Medicare enrollment
- Enrolled (PECOS I20130418000129); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,480 in Massachusetts → Look up another NPI →
Also registered at 200 Dexter Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hazel Audet, RNRegistered Nurse1134452006
- Jenny Jelliffe, MSNGerontology Registered Nurse1477860401
- Stacey Nguyen, RNRegistered Nurse1679707590
- Vivian Trotta, MSPTPhysical Therapist1144559915
Verify Mary-Ellen Cooper in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN216769Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average nurse practitioner in 2024
265 Medicare Part D claims for 17 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Lisinopril21 claims
- Hydrochlorothiazide19 claims
- Ibuprofen18 claims
- Gabapentin15 claims
- Furosemide14 claims
- Eliquis11 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
- The Commonwealth OF MassachusettsTewksbury, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary-Ellen Cooper among 3,480 nurse practitioner records in Massachusetts
Mary-Ellen Cooper, NP is one of 3,480 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 2010, is newer than 36% of them.
- NPI issued2010 · 36% of these records are older, 62% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2009 · median 2017 among the 1,963 with a school on file
- Record last updated2010 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 nurse practitioner records list a practice address in Watertown
They are 8 of the 873 NPPES records with a practice address in Watertown, and 3,480 nurse practitioner records in Massachusetts.
All 3,480 in Massachusetts → Every provider in Watertown → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Rebecca Alleyne HoltzclawWatertown, MA 024721043671415
- Vail Cort, MSN, FNP-BCWatertown, MA 024721285396705
- Ann Klinkusoom, NPWatertown, MA 024721942585831
- Sara Mannix, NPWatertown, MA 024721578616843
- Noemi Padilla, NPWatertown, MA 024721114796661
- Allison Page, FNP-CWatertown, MA 024721548967102
- Katherine Rawls, NPWatertown, MA 024721780224436
- Claire Anthony, NPArlington, MA 024741699350769
Common questions
What is Mary-Ellen Cooper, NP's NPI number?
Mary-Ellen Cooper, NP's National Provider Identifier (NPI) is 1689989568, issued on Aug 16, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mary-Ellen Cooper, NP located?
The NPPES record lists a practice address at 200 Dexter Ave, Watertown, MA, 02472. Phone: (617) 600-3195. Providers update this record themselves, so call before visiting.
How can I verify Mary-Ellen Cooper, NP's license?
NPPES lists Massachusetts license number RN216769, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Mary-Ellen Cooper, NP prescribe under Medicare Part D?
In 2024, Mary-Ellen Cooper, NP had 265 Medicare Part D claims for 17 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.