NANCY E ALLEGAR (M.D.) – Internal Medicine Physician, NPI 1750387494

NANCY E ALLEGAR (M.D.) is a healthcare provider. based in Boston, Massachusetts. specializing in INTERNAL MEDICINE. They hold the professional credentials M.D.. They hold a License No. 25MA05520800 (NJ). The NPI Number for NANCY E ALLEGAR (M.D.) is 1750387494

Main info

Female
Sole Proprietor
37 Years Of Experience
Accepts Medicare Assignment
Name
NANCY E ALLEGAR (M.D.)
NPI
1750387494
Phone
Not provided
Address
PO BOX 416457
Enumeration Date
27 June 2005
Last Update Date
11 April 2019

Doctor Profile

Medical School Name
RUTGERS R W JOHNSON MEDICAL SCHOOL (CAM/NEW BRUNS/PISC)
Secondary Phone
9082811077
Graduation Year
1989 (37 years ago)
PAC ID
4981649894
Group Practice PAC ID
4082979166
Professional Enrollment ID
I20050622000146
Address ID
NJ088441248HI390XXRDXX303
Telehealth
Yes
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience59
Completeness75
Years active:20State licenses:1Digital endpointsOther names

6,887 INTERNAL MEDICINE in NJ

Loading map...

Provider Addresses for NANCY E ALLEGAR (M.D.)

  • PO Box 846028, Albany Street, Church Green, Financial District, Boston, Suffolk County, Massachusetts, 02284-6028, United States

    BOSTON, MA 022416457

    Phone:

    Type: Mailing

  • 501, Amwell Road, Woods Tavern, Hillsborough Township, Somerset County, New Jersey, 08844, United States

    BLDG 5

    HILLSBOROUGH, NJ 088441248

    Phone: (908) 281-1077

    Fax: (908) 281-1081

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

Loading prescription activity...

Open Payments (CMS)

CMS reports 1 Open Payments records for all available years, with a total value of $80.

Total Amount is formed as General ($80) + Research ($0) + Ownership ($0) = $80.

Last reported payment date: 2023-08-07 • Largest payer in this snapshot: SANOFI-AVENTIS U.S. LLC ($80).

Total Amount

$80

General + Research + Ownership

Payments

1

Total payment records

General Amount

$80

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2023-08-07

Latest reported date

Top Companies

Largest payers in this snapshot

CompanyAmount
SANOFI-AVENTIS U.S. LLC$80
View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2005-06-22

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20050622000146IInternal MedicineNJTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99213Established patient office or other outpatient visit, 20-29 minutes585276$0
36415Insertion of needle into vein for collection of blood sample546288$0
99214Established patient office or other outpatient visit, 30-39 minutes386211$0
96372Injection of drug or substance under skin or into muscle33961$0
J3420Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg23058$0
View full utilization report →

Insurance plans in this area (ZIP 02241)

Loading plans...

Provider's Procedures

NANCY E ALLEGAR (M.D.) performs procedures in INTERNAL MEDICINE. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
INTERNAL MEDICINENJ90670Pneumococcal vaccine for injection into muscle9492
INTERNAL MEDICINENJ94060Measurement and graphic recording of the amount and speed of breathed air, before and following medication administration2826

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 4082979166View full group profile
NameSpecialtyState
P O D I A T R YNJ
Nurse PractitionerCA
Nurse PractitionerNJ
Physician AssistantNJ
Physician AssistantNC
Internal MedicineNJ
O B S T E T R I C S/ G Y N E C O L O G YNJ
N E U R O L O G YNJ
Physician AssistantNJ
Emergency Medicine, Internal MedicineNJ

Reviews

All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.

No reviews yet. Be the first to share your experience — your opinion helps families compare providers.

Frequently asked questions

What identifier follows NANCY E ALLEGAR (M.D.) across health systems?
The NPI 1750387494 uniquely identifies NANCY E ALLEGAR (M.D.) in U.S. healthcare data.
Does the public listing show NANCY E ALLEGAR (M.D.) as active?
NANCY E ALLEGAR (M.D.)'s NPI record reflects an active status in NPPES.
Which specialty label fits NANCY E ALLEGAR (M.D.)?
NPPES ties NANCY E ALLEGAR (M.D.) to Internal Medicine Physician in the taxonomy section. Clinical services aligned with this taxonomy classification.
What geographic area is tied to NANCY E ALLEGAR (M.D.)?
NANCY E ALLEGAR (M.D.) is associated with Boston, Massachusetts in the same public data insurers reference.
What is the difference between NPI and a medical license?
An NPI is a federal identifier; a medical license is issued by a state and governs where someone may practice.

Similar Providers

DR. JAN LORRAINE COOK (M.D.)

Internal Medicine Physician
30, Hobart Road, Chestnut Hill, Newton, Middlesex County, Massachusetts, 02159, United States
NPI: 1437152139

DR. ASHA ANANDAIAH (MD)

Pulmonary Disease Physician
Beth Israel Deaconess Medical Center East Campus, 330, Brookline Avenue, Audubon Square, Boston, Suffolk County, Massachusetts, 02215, United States
NPI: 1184627481

DR. LORI M BALESTRERO (MD)

Internal Medicine Physician
Mount Auburn Hospital, 330, Mount Auburn Street, Coolidge Hill, Cambridge, Middlesex County, Massachusetts, 02138, United States
NPI: 1750384046

DR. JAMES STEWART EVANS (MD)

Internal Medicine Physician
Hawthorne Place, West End, Boston, Suffolk County, Massachusetts, 02222, United States
NPI: 1215939533

MEDSTAR GEORGETOWN MEDICAL CENTER, INC

Internal Medicine Physician
PO Box 846028, Albany Street, Church Green, Financial District, Boston, Suffolk County, Massachusetts, 02284-6028, United States
NPI: 1285636522

DR. PO-SHUN LEE (MD)

Pulmonary Disease Physician
Boston Children's Hospital, 300, Blackfan Street, Roxbury, Boston, Suffolk County, Massachusetts, 02115, United States
NPI: 1740284702
PO Box 846028, Albany Street, Church Green, Financial District, Boston, Suffolk County, Massachusetts, 02284-6028, United States
NPI: 1093719700

CHRISTOPHER W SHANAHAN (M.D., M.P.H.)

Internal Medicine Physician
801 ALBANY ST FL G
NPI: 1730184854