NPPES file of Aug 9, 2026

On Seng, NP-C

Family Nurse Practitioner · Cambridge, MA

On Seng, NP-C is a family nurse practitioner with a practice address in Cambridge, Massachusetts, and NPI 1992358162, issued on Jul 17, 2019. Check the license (Massachusetts RN2273053, as entered in NPPES) with the Massachusetts board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1992358162
Name
On Seng
Credential
NP-C
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
RN2273053 MA
Self-reported in NPPES; status is on the state search
Practice location
36 White St, Cambridge, MA 02140
Phone
(617) 876-5519
Enumerated
Jul 17, 2019
Record last updated
Dec 31, 2020 (not updated in 6 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →

Also registered at 36 White St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jeneva AhearnPharmacist1396669222
  2. Jasmine ChoiPharmacist1750978219
  3. Son DoanPharmacist1437846706
  4. Mary Eaton, N.P.Family Nurse Practitioner1043492192
  5. Peter Kim, PHARMD, RPHPharmacist1720950520
  6. Joan LeePharmacist1639093578

Verify On Seng in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
    Search for license RN2273053    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

On Seng among 4,724 family nurse practitioner records in Massachusetts

On Seng, NP-C 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 not. Its NPI, issued in 2019, is newer than 54% of them.

  • NPI issued2019 · 54% of these records are older, 40% newer
  • In a Medicare fileNo · 71% of these records are
  • In the CMS Doctors and Clinicians fileNo · 57% of these records are
  • Record last updated2020 · 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).

68 family nurse practitioner records list a practice address in Cambridge

They are 68 of the 5,145 NPPES records with a practice address in Cambridge, and 4,724 family nurse practitioner records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 4,724 in Massachusetts → Every provider in Cambridge → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Lijimol BijuCambridge, MA 021401285230888
  2. Mary Eaton, N.P.Cambridge, MA 021401043492192
  3. Nicole GibbonsCambridge, MA 021401295332989
  4. Lucy Hollister, FNP-BCNorth Cambridge, MA 021401639010747
  5. Tiffany Luongo, FNP, RNCambridge, MA 021401013470194
  6. Elizabeth O'Neil, CNPCambridge, MA 021401811416563
  7. Leigh Poitevent, FNP-BCCambridge, MA 021401053713032
  8. Katherine WhangCambridge, MA 021401104161264

Common questions

What is On Seng, NP-C's NPI number?

On Seng, NP-C's National Provider Identifier (NPI) is 1992358162, issued on Jul 17, 2019. An NPI identifies a provider in billing; it is not a license.

Where is On Seng, NP-C located?

The NPPES record lists a practice address at 36 White St, Cambridge, MA, 02140. Phone: (617) 876-5519. Providers update this record themselves, so call before visiting.

How can I verify On Seng, NP-C's license?

NPPES lists Massachusetts license number RN2273053, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.