Kathryn Stiff, NP
Family Nurse Practitioner · Boston, MA
Kathryn Stiff, NP is a family nurse practitioner with a practice address in Boston, Massachusetts, and NPI 1134490188, issued on Jan 23, 2012. Check the license (Massachusetts RN2336622, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathryn Stiff
- Credential
- NP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- RN2336622 MA
AP60252118 WA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St, Boston, MA 02114
- Phone
- (617) 726-2000
- Enumerated
- Jan 23, 2012
- Record last updated
- May 6, 2025
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →
Also registered at 55 Fruit St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kathryn Stiff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2336622Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average family nurse practitioner in 2024
290 Medicare Part D claims for 114 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.
Most prescribed
- Omeprazole58 claims
- Gavilyte-G29 claims
- Lansoprazole25 claims
- Famotidine24 claims
- Stelara20 claims
- Esomeprazole Magnesium19 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: $494.80
8 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 99,489 providers of this specialty with any payment received $650.95 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.
Kathryn Stiff among 4,724 family nurse practitioner records in Massachusetts
Kathryn Stiff, NP is one of 4,724 family 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 2012, is newer than 23% of them.
- NPI issued2012 · 23% of these records are older, 74% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2025 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
938 family nurse practitioner records list a practice address in Boston
They are 938 of the 41,865 NPPES records with a practice address in Boston, and 4,724 family nurse practitioner records in Massachusetts.
All 4,724 in Massachusetts → Every provider in Boston → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Maryellen Belisle, APRNBoston, MA 021141508892001
- Kendra Cull, FNPBoston, MA 021141780665612
- Irene Gutowski, NPBoston, MA 021141134271893
- Angela Hurley, NPBoston, MA 021141417001769
- Peggy Leland, NPBoston, MA 021141790883106
- Mary Nichols, C-FNPBoston, MA 021141548312721
- Heather Parker, NPBoston, MA 021141518018423
- Maria Roche, NPBoston, MA 021141447307707
Common questions
What is Kathryn Stiff, NP's NPI number?
Kathryn Stiff, NP's National Provider Identifier (NPI) is 1134490188, issued on Jan 23, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Kathryn Stiff, NP located?
The NPPES record lists a practice address at 55 Fruit St, Boston, MA, 02114. Phone: (617) 726-2000. Providers update this record themselves, so call before visiting.
How can I verify Kathryn Stiff, NP's license?
NPPES lists Massachusetts license number RN2336622, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Kathryn Stiff, NP prescribe under Medicare Part D?
In 2024, Kathryn Stiff, NP had 290 Medicare Part D claims for 114 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.