1. Home
  2. Directory
  3. Massachusetts
  4. Lexington
  5. Nurse Practitioner
  6. NPI Profile

SYLVIA MASSMANIAN FNP-BC
NPI 1942618483
Nurse Practitioner - Family in Lexington, MA

Active since July 29, 2014PECOS EnrolledAccepts Medicare Assignment
14 GREEN LN, LEXINGTON, MA 02421(781) 330-6876 Get Directions Write a Review

NPPES record last updated: July 29, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Sylvia Massmanian Fnp-bc NPPES

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

SYLVIA MASSMANIAN FNP-BC (NPI 1942618483) is an individual family provider in Lexington, Massachusetts, licensed in Massachusetts (RN2273216) and active in the NPI registry since July 2014. She is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and is a graduate of Other (2014).

NPPES Registry Identity

NPI1942618483
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameSYLVIA MASSMANIANCredential: FNP-BC
Location Address14 GREEN LNLexington, MA 02421-6333
Mailing Address14 Green LnLexington, MA 02421-6333
Phone(781) 330-6876
Sole ProprietorYes
Medical School CMSOtherGraduated 2014
Enumeration DateJuly 29, 2014
✔ NPI 1942618483 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in MA · RN2273216
14 GREEN LN, Lexington, MA 02421
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Sylvia Massmanian Fnp-bc is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5991028763
PECOS Enrollment IDI20141231000757
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

4

Medicare enrollment records show Sylvia Massmanian reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mass General Brigham Community Physicians Inc.
3.6 mi
Internal Medicine
47 MIDDLESEX TPKE
Burlington, MA 01803
  • Reassigned Medicare billing, Massachusetts enrollment
  • Also billed through NPI 1174545875 (Massachusetts)
  • 350 clinicians in this Medicare group
NPI 1639773039 (781) 653-0100
Mount Auburn Professional Services Inc
5.0 mi
Internal Medicine
330 MOUNT AUBURN ST
Cambridge, MA 02138
  • Reassigned Medicare billing, Massachusetts enrollment
  • 423 clinicians in this Medicare group
NPI 1992750996 (617) 499-5654
Mass General Brigham Medical Group Suburban Massachusetts Inc
6.4 mi
Family Medicine
2014 WASHINGTON STREET
Newton, MA 02462
  • Reassigned Medicare billing, Massachusetts enrollment
  • 992 clinicians in this Medicare group
NPI 1538191218 (617) 243-6262
At Care, PLLC
10.0 mi
Geriatric Medicine
907 EAST ST
Carlisle, MA 01741
  • Reassigned Medicare billing, Massachusetts enrollment
  • 9 clinicians in this Medicare group
NPI 1548640105 (978) 610-6331

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

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
208 services204 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
88 services72 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
71 services69 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
58 services53 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
38 services38 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
26 services25 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

North Shore Medical Center -

Acute Care Hospitals · Salem, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220035
Location81 Highland AvenueSalem, MA 01970 · Essex County
Emergency services Birthing friendly

Massachusetts General Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220071
Location55 Fruit StreetBoston, MA 02114 · Suffolk County
Emergency services Birthing friendly

Lahey Hospital & Medical Center, Burlington

Acute Care Hospitals · Burlington, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220171
Location41 & 45 Mall RoadBurlington, MA 01803 · Middlesex County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02421 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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
4 suppliers13 claims38 services$6.25 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Sylvia Massmanian's NPI number?

The NPI number for Sylvia Massmanian is 1942618483. It was assigned to this individual provider in the NPPES registry on July 29, 2014.

Where is Sylvia Massmanian located?

Sylvia Massmanian practices at 14 Green Ln, Lexington, MA 02421. The listed phone number is (781) 330-6876.

What is Sylvia Massmanian's specialty?

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

Is Sylvia Massmanian enrolled in Medicare?

Yes. Sylvia Massmanian is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Sylvia Massmanian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sylvia Massmanian reassigns Medicare benefits to 4 organizations: Mass General Brigham Community Physicians Inc. (Burlington, MA), Mount Auburn Professional Services Inc (Cambridge, MA), Mass General Brigham Medical Group Suburban Massachusetts Inc (Newton, MA) and At Care, PLLC (Carlisle, MA). 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 Sylvia Massmanian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sylvia Massmanian accept?

Health plans from Taro Health list Sylvia Massmanian as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Sylvia Massmanian affiliated with any hospitals?

According to CMS data, Sylvia Massmanian is affiliated with North Shore Medical Center -, Massachusetts General Hospital and Lahey Hospital & Medical Center, Burlington.

When was this NPI record last updated?

The NPPES record for Sylvia Massmanian was last updated on July 29, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.