Caroline Grace Mahn
Nurse Practitioner · Worcester, MA
Caroline Grace Mahn is a nurse practitioner with a practice address in Worcester, Massachusetts, and NPI 1932877065, issued on Sep 2, 2021. Check the license (Massachusetts RN2322044, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Caroline Grace Mahn
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- RN2322044 MA
Self-reported in NPPES; status is on the state search - Practice location
- 5 Neponset St, Worcester, MA 01606
- Phone
- (508) 595-2300
- Enumerated
- Sep 2, 2021
- Record last updated
- Jun 3, 2025
- Fax
- (508) 853-5226
- Medicare enrollment
- Enrolled (PECOS I20211013003281); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,480 in Massachusetts → Look up another NPI →
Also registered at 5 Neponset St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Caroline Anastasi, LMHCMental Health Counselor1881140788
- Nicole Barr, NPFamily Nurse Practitioner1700524873
- Kern Bayard, MDInternal Medicine Physician1699777888
- Wendy Bergman, MDInternal Medicine Physician1083674451
- Irene Blair, NPNurse Practitioner1558337824
Verify Caroline Grace Mahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2322044Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average nurse practitioner in 2024
33 Medicare Part D claims for 15 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of 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
- Reliant Medical Group IncWorcesteer, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Caroline Grace Mahn among 3,480 nurse practitioner records in Massachusetts
Caroline Grace Mahn 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 2021, is newer than 75% of them.
- NPI issued2021 · 75% of these records are older, 20% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2021 · median 2017 among the 1,963 with a school on file
- Record last updated2025 · 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).
499 nurse practitioner records list a practice address in Worcester
They are 499 of the 13,166 NPPES records with a practice address in Worcester, and 3,480 nurse practitioner records in Massachusetts.
All 3,480 in Massachusetts → Every provider in Worcester → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Irene Blair, NPWorcester, MA 016061558337824
- Cathleen Case, NPWorcester, MA 016061477524353
- Stephanie Deveau, FNP-CWorcester, MA 016061649000654
- Madison Dewolfe, RNWorcester, MA 016061376287227
- Kayla Hill, NPWorcester, MA 016061780348870
- Kimberly Kats, NPWorcester, MA 016061922258565
- Lucy Kirakous, NP-BCWorcester, MA 016061831708841
- Ruth Lundstrom, NPWorcester, MA 016061326284738
Common questions
What is Caroline Grace Mahn's NPI number?
Caroline Grace Mahn's National Provider Identifier (NPI) is 1932877065, issued on Sep 2, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Caroline Grace Mahn located?
The NPPES record lists a practice address at 5 Neponset St, Worcester, MA, 01606. Phone: (508) 595-2300. Providers update this record themselves, so call before visiting.
How can I verify Caroline Grace Mahn's license?
NPPES lists Massachusetts license number RN2322044, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Caroline Grace Mahn prescribe under Medicare Part D?
In 2024, Caroline Grace Mahn had 33 Medicare Part D claims for 15 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.