1. Home
  2. Directory
  3. Massachusetts
  4. Barre
  5. Family Medicine
  6. NPI Profile

NICHOLAS MICHAEL HAJJ M.D.
NPI 1992168421
Family Medicine in Barre, MA

Active since April 01, 2016PECOS EnrolledAccepts Medicare Assignment
151 WORCESTER RD, BARRE, MA 01005(978) 355-6321(978) 355-6329 Get Directions Write a Review

NPPES record last updated: December 15, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 15, 2020, Aug 19, 2019, Jun 13, 2016 and 1 more (4 updates tracked since 2016).

About Nicholas Michael Hajj M.d. NPPES

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

NICHOLAS MICHAEL HAJJ M.D. (NPI 1992168421) is an individual family medicine provider in Barre, Massachusetts, licensed in Massachusetts (281067) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Umass Memorial Healthalliance Hospitals, and is a graduate of University Of Massachusetts Medical School (2016).

NPPES Registry Identity

NPI1992168421
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameNICHOLAS MICHAEL HAJJCredential: M.D.
Location Address151 WORCESTER RDBarre, MA 01005-9002
Mailing AddressPo Box 415438Boston, MA 02241-5348 · (800) 225-8885 · Fax (508) 334-8105
Phone(978) 355-6321
Fax(978) 355-6329
Sole ProprietorNo
Medical School CMSUniversity Of Massachusetts Medical SchoolGraduated 2016
Enumeration DateApril 1, 2016
Last NPPES UpdateDecember 15, 20204 updates tracked since enumeration
NPPES CertifiedDecember 15, 2020
✔ NPI 1992168421 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in MA · 281067
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
151 WORCESTER RD, Barre, MA 01005
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, 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

Nicholas Michael Hajj M.d. 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 ID9032402284
PECOS Enrollment IDI20191017000570
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 Reassignment

Medicare enrollment records show Nicholas Hajj reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Umass Memorial Medical Group Inc
19 mi
Internal Medicine
55 LAKE AVE N
Worcester, MA 01655
  • Reassigned Medicare billing, Massachusetts enrollment
  • 2,902 clinicians in this Medicare group
NPI 1760445373 (508) 334-1000

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 4

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.

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.
213 services101 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.
211 services152 patients
Telephone medical discussion with physician, 11-20 minutes 99442
This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.
92 services40 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.
51 services51 patients

Hospital Affiliations CMS Care Compare 3

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

Umass Memorial Healthalliance Hospitals

Acute Care Hospitals · Leominster, MA
2/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number220001
Location60 Hospital RoadLeominster, MA 01453 · Worcester County
Emergency services

Umass Memorial Health - Harrington Hospital

Acute Care Hospitals · Southbridge, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220019
Location100 South StreetSouthbridge, MA 01550 · Worcester County
Emergency services

Umass Memorial Medical Center/University Campus

Acute Care Hospitals · Worcester, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220163
Location55 Lake Avenue NorthWorcester, MA 01655 · Worcester County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01005 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
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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 7

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
6 suppliers20 claims53 services$4.85 avg. paid by Medicare
Administration set, with small volume nonfiltered pneumatic nebulizer, disposable A7003
DME-Other DME · category DE000N
2 suppliers11 claims21 services$0.92 avg. paid by Medicare
Manual adult size wheelchair, includes tilt in space E1161
DME-Wheelchairs · category DD000N
1 supplier11 claims11 services$187.05 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
3 suppliers23 claims23 services$59.90 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$32.08 avg. paid by Medicare
Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620
DME-Drugs Administered Through DME · category DG006N
3 suppliers20 claims2,250 services$0.08 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

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

DR. AMY MIN HE MD
Family Medicine
151 WORCESTER RD
BARRE, MA 01005
Worcester County (978) 355-6321
DR. PAMELA L. GRIMALDI D.O.
Family Medicine
151 WORCESTER RD
BARRE, MA 01005
Worcester County (978) 355-6321
EFROSINI KONOMI PA-C
Physician Assistant
151 WORCESTER RD
BARRE, MA 01005
Worcester County (978) 355-6321
KRISTIN K. WICKSTROM PA
Physician Assistant
151 WORCESTER RD, BARRE FAMILY HEALTH CENTER
BARRE, MA 01005
Worcester County (978) 355-6321
JULIA FLEET D.O.
Family Medicine
151 WORCESTER RD
BARRE, MA 01005
Worcester County (978) 355-6321
SARAH YODER MD
Student in an Organized Health Care Education/Training Program
151 WORCESTER RD
BARRE, MA 01005
Worcester County (508) 334-1008
BRETT C LEHNER MD
Family Medicine
151 WORCESTER RD
BARRE, MA 01005
Worcester County (978) 355-6321
MATTHEW ALEXANDER MORROW DO
Student in an Organized Health Care Education/Training Program
151 WORCESTER RD
BARRE, MA 01005
Worcester County (508) 334-1000

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 Nicholas Hajj's NPI number?

The NPI number for Nicholas Hajj is 1992168421. It was assigned to this individual provider in the NPPES registry on April 1, 2016.

Where is Nicholas Hajj located?

Nicholas Hajj practices at 151 Worcester Rd, Barre, MA 01005. The listed phone number is (978) 355-6321.

What is Nicholas Hajj's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Nicholas Hajj enrolled in Medicare?

Yes. Nicholas Hajj 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 organization bills Medicare for Nicholas Hajj's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Hajj reassigns Medicare benefits to Umass Memorial Medical Group Inc (Worcester, MA). The 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 Nicholas Hajj's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nicholas Hajj accept?

Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Nicholas Hajj 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 Nicholas Hajj affiliated with any hospitals?

According to CMS data, Nicholas Hajj is affiliated with Umass Memorial Healthalliance Hospitals, Umass Memorial Health - Harrington Hospital and Umass Memorial Medical Center/University Campus.

When was this NPI record last updated?

The NPPES record for Nicholas Hajj was last updated on December 15, 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.