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GEORGE KARANDINOS
NPI 1548897432
Internal Medicine in Chelsea, MA

Active since March 23, 2020PECOS EnrolledAccepts Medicare Assignment
151 EVERETT AVE, CHELSEA, MA 02150(617) 889-8300(617) 887-3675 Get Directions Write a Review

NPPES record last updated: June 15, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 15, 2023, Feb 3, 2023, Mar 23, 2020 (3 updates tracked since 2020).

About George Karandinos NPPES

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

GEORGE KARANDINOS (NPI 1548897432) is an individual internal medicine provider in Chelsea, Massachusetts, licensed in Massachusetts (1014764) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Harvard Medical School (2020).

NPPES Registry Identity

NPI1548897432
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameGEORGE KARANDINOS
Location Address151 EVERETT AVEChelsea, MA 02150-1812
Mailing Address55 Fruit StBoston, MA 02114-2696 · (617) 726-2000
Phone(617) 889-8300
Fax(617) 887-3675
Sole ProprietorNo
Medical School CMSHarvard Medical SchoolGraduated 2020
Enumeration DateMarch 23, 2020
Last NPPES UpdateJune 15, 20233 updates tracked since enumeration
NPPES CertifiedJune 15, 2023
✔ NPI 1548897432 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 1014764
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
151 EVERETT AVE, Chelsea, MA 02150
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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

George Karandinos 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 ID7517377427
PECOS Enrollment IDI20230626001087
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

2

Medicare enrollment records show George Karandinos reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Massachusetts General Physicians Organization Inc
2.7 mi
Dermatology
55 FRUIT ST, BUL 2
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,360 clinicians in this Medicare group
NPI 1801874573 (617) 724-0287
The General Hospital Corporation
2.7 mi
General Acute Care Hospital
55 FRUIT ST, BULFINCH 360
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,234 clinicians in this Medicare group
NPI 1023049236 (617) 726-2000

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

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.
19 services14 patients

Hospital Affiliations CMS Care Compare

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

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02150 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
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
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 2

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

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers14 claims14 services$14.86 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 suppliers18 claims18 services$68.07 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.

ADRIAN J HERNANDEZ PHD, LP
Psychologist
151 EVERETT AVE
CHELSEA, MA 02150
Suffolk County (617) 884-8300
STEPHEN LOPEZ
Physical Therapist (Orthopedic)
151 EVERETT AVE
CHELSEA, MA 02150
Suffolk County (617) 887-3586
AMY NOVIKOFF
Speech-Language Pathologist
151 EVERETT AVE
CHELSEA, MA 02150
Suffolk County (617) 887-3529
MS. NAOMI RUSH LICSW
Social Worker (Clinical)
151 EVERETT AVE
CHELSEA, MA 02150
Suffolk County (617) 889-8515
PROF. ROBERT JAY AMRIEN PA-C
Physician Assistant
151 EVERETT AVE
CHELSEA, MA 02150
Suffolk County (617) 884-8300
DR. KIMBERLY GAYLE MONTEZ MD
Pediatrics
151 EVERETT AVE
CHELSEA, MA 02150
Suffolk County (617) 884-8300
BRITTNEY ALEXIS CONIGLIONE PT, DPT
Physical Therapist
151 EVERETT AVE
CHELSEA, MA 02150
Suffolk County (617) 887-3586
KATHERINE D GRIFFITHS LICSW
Social Worker (Clinical)
151 EVERETT AVE
CHELSEA, MA 02150
Suffolk County (617) 889-8515

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 George Karandinos's NPI number?

The NPI number for George Karandinos is 1548897432. It was assigned to this individual provider in the NPPES registry on March 23, 2020.

Where is George Karandinos located?

George Karandinos practices at 151 Everett Ave, Chelsea, MA 02150. The listed phone number is (617) 889-8300.

What is George Karandinos's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is George Karandinos enrolled in Medicare?

Yes. George Karandinos 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 George Karandinos's services?

According to the CMS Revalidation Reassignment List (October 2026 release), George Karandinos reassigns Medicare benefits to 2 organizations: Massachusetts General Physicians Organization Inc (Boston, MA) and The General Hospital Corporation (Boston, 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 George Karandinos's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does George Karandinos accept?

Health plans from Taro Health list George Karandinos 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 George Karandinos affiliated with any hospitals?

According to CMS data, George Karandinos is affiliated with Massachusetts General Hospital.

When was this NPI record last updated?

The NPPES record for George Karandinos was last updated on June 15, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.