Katherine Longo, FNP
Family Nurse Practitioner · Boston, MA
Katherine Longo, FNP is a family nurse practitioner with a practice address in Boston, Massachusetts, and NPI 1912522822, issued on Jun 16, 2020. Check the license (Massachusetts RN2309167, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Longo
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- RN2309167 MA
Self-reported in NPPES; status is on the state search - Practice location
- 147 Milk St, Boston, MA 02109
- Phone
- (339) 223-1370
- Enumerated
- Jun 16, 2020
- Record last updated
- Oct 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →
Also registered at 147 Milk St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine Longo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2309167Check 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
282 Medicare Part D claims for 92 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium24 claims
- Trulicity18 claims
- Fluticasone Propionate13 claims
- Metformin Hcl Er12 claims
- Lisinopril11 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.
Katherine Longo among 4,724 family nurse practitioner records in Massachusetts
Katherine Longo, FNP 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 2020, is newer than 60% of them.
- NPI issued2020 · 60% of these records are older, 33% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2021 · 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
- Alyshia Casella, FNP-BCBoston, MA 021091972074136
- Danielle Dupre, FNP-BCBoston, MA 021091245664564
- Stephany Gyasi, CNPBoston, MA 021091508369166
- Rebecca Juneau, APRN, FNPBoston, MA 021091407416647
- Kelly Lincoln, FNPBoston, MA 021091518591619
- Morgan Mako, APRN, FNP-CBoston, MA 021091235635657
- Kathleen Napoli, MSN, APRN, FNP-CBoston, MA 021091598245946
- Allegra Norton, RN, FNP-CBoston, MA 021091134645997
Common questions
What is Katherine Longo, FNP's NPI number?
Katherine Longo, FNP's National Provider Identifier (NPI) is 1912522822, issued on Jun 16, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Longo, FNP located?
The NPPES record lists a practice address at 147 Milk St, Boston, MA, 02109. Phone: (339) 223-1370. Providers update this record themselves, so call before visiting.
How can I verify Katherine Longo, FNP's license?
NPPES lists Massachusetts license number RN2309167, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Longo, FNP prescribe under Medicare Part D?
In 2024, Katherine Longo, FNP had 282 Medicare Part D claims for 92 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.