Mary D. Warzynski, NP
Nurse Practitioner · Chestnut Hill, MA
Mary D. Warzynski, NP is a nurse practitioner with a practice address in Chestnut Hill, Massachusetts, and NPI 1316909013, issued on Apr 6, 2006. Check the license (Massachusetts 200847, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary D. Warzynski
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 200847 MA
Self-reported in NPPES; status is on the state search - Practice location
- 291 Independence Dr, Chestnut Hill, MA 02467
- Phone
- (617) 325-2800
- Enumerated
- Apr 6, 2006
- Record last updated
- Oct 21, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100903000513); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,480 in Massachusetts → Look up another NPI →
Also registered at 291 Independence Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary D. Warzynski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 200847Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% more Medicare Part D claims than the average nurse practitioner in 2024
1,990 Medicare Part D claims for 661 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. 162 claims were for opioids.
Most prescribed
- Lorazepam97 claims
- Levothyroxine Sodium85 claims
- Clonazepam82 claims
- Alendronate Sodium75 claims
- Sertraline Hcl75 claims
- Gabapentin63 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
- Atrius Health IncDedham, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary D. Warzynski among 3,480 nurse practitioner records in Massachusetts
Mary D. Warzynski, 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 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 78% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated1996 · median 2017 among the 1,963 with a school on file
- Record last updated2019 · 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).
15 nurse practitioner records list a practice address in Chestnut Hill
They are 15 of the 772 NPPES records with a practice address in Chestnut Hill, and 3,480 nurse practitioner records in Massachusetts.
All 3,480 in Massachusetts → Every provider in Chestnut Hill → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Jillian Barry, CNPChestnut Hill, MA 024671104529601
- Maria Bueche, PH.D, RN, NPChestnut Hill, MA 024671306005335
- Alyssa ChanChestnut Hill, MA 024671760356349
- Joanne Faber, MSN, ANP-BC, JDChestnut Hill, MA 024671013542810
- Johnathon HolmesChestnut Hill, MA 024671952064073
- Cassandra Hunter, NPChestnut Hill, MA 024671568336030
- Michaela Johnson, FNP-CChestnut Hill, MA 024671598327702
- Daniel Lococo, NP-CChestnut Hill, MA 024671871147363
Common questions
What is Mary D. Warzynski, NP's NPI number?
Mary D. Warzynski, NP's National Provider Identifier (NPI) is 1316909013, issued on Apr 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary D. Warzynski, NP located?
The NPPES record lists a practice address at 291 Independence Dr, Chestnut Hill, MA, 02467. Phone: (617) 325-2800. Providers update this record themselves, so call before visiting.
How can I verify Mary D. Warzynski, NP's license?
NPPES lists Massachusetts license number 200847, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Mary D. Warzynski, NP prescribe under Medicare Part D?
In 2024, Mary D. Warzynski, NP had 1,990 Medicare Part D claims for 661 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.