Kristen Fein, NP
Gerontology Nurse Practitioner · Boston, MA
Kristen Fein, NP is a gerontology nurse practitioner with a practice address in Boston, Massachusetts, and NPI 1861045478, issued on Jul 23, 2019. Check the license (Massachusetts RN2280155, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kristen Fein
- Credential
- NP
- Primary taxonomy
- Gerontology Nurse Practitioner 363LG0600X
- License numbers
- RN2280155 MA
RN2280115 MA
Self-reported in NPPES; status is on the state search - Practice location
- 732 Harrison Ave, Boston, MA 02118
- Phone
- (617) 638-5600
- Enumerated
- Jul 23, 2019
- Record last updated
- Oct 23, 2019 (not updated in 7 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest gerontology nurse practitioner records → All 379 in Massachusetts → Look up another NPI →
Also registered at 732 Harrison Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Eric Awtry, M.D.Cardiovascular Disease Physician1922084839
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- Katy Bockstall, M.D.Cardiovascular Disease Physician1952676058
- John Bostrom, M.D.Cardiovascular Disease Physician1477087021
Verify Kristen Fein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2280155Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average gerontology nurse practitioner in 2024
48 Medicare Part D claims for 31 beneficiaries, against an average of 1,369 among the 6,165 providers of this specialty who prescribed in Part D.
Most prescribed
- Furosemide12 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.
Kristen Fein among 379 gerontology nurse practitioner records in Massachusetts
Kristen Fein, NP is one of 379 gerontology nurse practitioner records with a practice address in Massachusetts. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 66% of them.
- NPI issued2019 · 66% of these records are older, 26% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 51% of these records are
- Record last updated2019 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LG0600X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gerontology Nurse Practitioner providers in Massachusetts
There are 379 gerontology nurse practitioner records in Massachusetts.
All 379 in Massachusetts → Every provider in Boston → Gerontology Nurse Practitioner nationwide →
The 8 gerontology nurse practitioner records with the nearest ZIP codes
- Grant Butler, NPBoston, MA 021181437525102
- Karen Byrd, NPBoston, MA 021181578547980
- Jiyin Chou, N.P.Boston, MA 021181689807786
- Katherine Concilio, NPBoston, MA 021181235237173
- Nicole Depace, NPBoston, MA 021181265749618
- Yves-Martine Dumas, RN, NPBoston, MA 021181154628246
- Susan Frazier, N.P.Boston, MA 021181679585988
- Aissatou Gueye, NPBoston, MA 021181972966216
Common questions
What is Kristen Fein, NP's NPI number?
Kristen Fein, NP's National Provider Identifier (NPI) is 1861045478, issued on Jul 23, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Kristen Fein, NP located?
The NPPES record lists a practice address at 732 Harrison Ave, Boston, MA, 02118. Phone: (617) 638-5600. Providers update this record themselves, so call before visiting.
How can I verify Kristen Fein, NP's license?
NPPES lists Massachusetts license number RN2280155, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Kristen Fein, NP prescribe under Medicare Part D?
In 2024, Kristen Fein, NP had 48 Medicare Part D claims for 31 beneficiaries; the average among gerontology nurse practitioner prescribers was 1,369. 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.