MRS. ON SENG NP-C
NPI 1992358162
Nurse Practitioner - Family in Cambridge, MA

Active since July 17, 2019PECOS Enrolled
36 WHITE ST, CAMBRIDGE, MA 02140(617) 876-5519 Get Directions Write a Review

NPPES record last updated: December 31, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 31, 2020, Dec 3, 2019, Jul 17, 2019 (3 updates tracked since 2019).

About Mrs. On Seng Np-c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MRS. ON SENG NP-C (NPI 1992358162) is an individual family provider in Cambridge, Massachusetts, licensed in Massachusetts (RN2273053) and active in the NPI registry since July 2019. She is enrolled in Medicare PECOS and maintains a secondary practice location in Boston.

NPPES Registry Identity

NPI1992358162
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMRS. ON SENGCredential: NP-C
Location Address36 WHITE STCambridge, MA 02140
Mailing Address36 White St, Clinic #717Cambridge, MA 02140 · (617) 876-5519
Sole ProprietorNo
Enumeration DateJuly 17, 2019
Last NPPES UpdateDecember 31, 20203 updates tracked since enumeration
NPPES CertifiedDecember 27, 2020
✔ NPI 1992358162 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in MA · RN2273053
Also ListedNurse PractitionerTaxonomy 363L00000X · License RN2273053 (MA)
36 WHITE ST, Cambridge, MA 02140

Secondary Practice Location 1

Location 170 Forsyth St Bldg 1Boston, MA 02115-5026 · Phone (617) 373-2772

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. On Seng Np-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

5

Medicare enrollment records show On Seng reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Nephrology
140 E RIDGEWOOD AVE STE 415
Paramus, NJ 07652
  • Reassigned Medicare billing, New Jersey enrollment
  • 58 clinicians in this Medicare group
Nephrology
615 SAINT GEORGE SQUARE CT STE 300
Winston Salem, NC 27103
  • Reassigned Medicare billing, North Carolina enrollment
  • 31 clinicians in this Medicare group
Nephrology
5410 MARYLAND WAY STE 400
Brentwood, TN 37027
  • Reassigned Medicare billing, Texas enrollment
  • 91 clinicians in this Medicare group
Nephrology
5410 MARYLAND WAY STE 400
Brentwood, TN 37027
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 99 clinicians in this Medicare group
Nephrology
4620 E 53RD ST STE 200
Davenport, IA 52807
  • Reassigned Medicare billing, Iowa enrollment
  • 46 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02140 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 13

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Nurse Practitioner (Family)
36 WHITE ST
CAMBRIDGE, MA 02140
Pharmacist
36 WHITE ST
CAMBRIDGE, MA 02140
Nurse Practitioner (Family)
36 WHITE ST
CAMBRIDGE, MA 02140
Nurse Practitioner (Family)
36 WHITE ST, STE 1
CAMBRIDGE, MA 02140
Nurse Practitioner (Family)
36 WHITE ST
CAMBRIDGE, MA 02140
Pharmacist
36 WHITE ST
CAMBRIDGE, MA 02140
Pharmacist
36 WHITE ST
CAMBRIDGE, MA 02140
Pharmacist
36 WHITE ST
CAMBRIDGE, MA 02140

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is On Seng's NPI number?

The NPI number for On Seng is 1992358162. It was assigned to this individual provider in the NPPES registry on July 17, 2019.

Where is On Seng located?

On Seng practices at 36 White St, Cambridge, MA 02140. The listed phone number is (617) 876-5519.

What is On Seng's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is On Seng enrolled in Medicare?

Yes. On Seng is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for On Seng's services?

According to the CMS Revalidation Reassignment List (October 2026 release), On Seng reassigns Medicare benefits to 5 organizations: Monogram Health Professional Services Of New Jersey LLC (Paramus, NJ), Monogram Health Professional Services Of North Carolina PC (Winston Salem, NC), Monogram Health Professional Services Of Texas PLLC (Brentwood, TN), Monogram Health Professional Services PC (Brentwood, TN) and Monogram Health Professional Services Of Iowa PLLC (Davenport, IA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for On Seng's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for On Seng was last updated on December 31, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.