Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ALEXANDER FLEMING-NOURI
NPI 1083279954
Emergency Medicine in New Haven, CT

Active since May 07, 2019PECOS EnrolledAccepts Medicare Assignment
20 YORK ST, NEW HAVEN, CT 06510(203) 688-4242 Get Directions Write a Review

NPPES record last updated: October 4, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 4, 2026, Aug 11, 2025, Apr 10, 2025 and 3 more (6 updates tracked since 2019).

About Alexander Fleming-nouri NPPES

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

ALEXANDER FLEMING-NOURI (NPI 1083279954) is an individual emergency medicine provider in New Haven, Connecticut, licensed in Connecticut (1.071122) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS, is affiliated with South Shore Hospital, and maintains 4 additional practice locations.

NPPES Registry Identity

NPI1083279954
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameALEXANDER FLEMING-NOURI
Location Address20 YORK STNew Haven, CT 06510-3220
Mailing Address464 Congress Ave Ste 260New Haven, CT 06519-1362 · (203) 785-7059 · Fax (203) 785-4680
Sole ProprietorNo
Medical School CMSOtherGraduated 2015
Enumeration DateMay 7, 2019
Last NPPES UpdateOctober 4, 20266 updates tracked since enumeration
NPPES CertifiedOctober 4, 2026
✔ NPI 1083279954 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in CT · 1.071122✔ Licensed in MA · 295452
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 1.071122 (CT), 295452 (MA)
20 YORK ST, New Haven, CT 06510

Secondary Practice Locations 4

Location 1267 Grant StBridgeport, CT 06610-2805 · Phone (203) 384-3566
Location 255 Fogg RdSouth Weymouth, MA 02190-2455 · Phone (781) 624-8000
Location 32800 Main StBridgeport, CT 06606-4201 · Phone (203) 576-6000
Location 4Corner of Route N12 and N7Fort Defiance, AZ 86504-0649 · Phone (928) 729-8000

Accepted 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

Alexander Fleming-nouri 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 ID8527392422
PECOS Enrollment IDI20230511002512, I20250909003306
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

6

Medicare enrollment records show Alexander Fleming-nouri reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

General Acute Care Hospital
300 SEASIDE AVE
Milford, CT 06460
  • Reassigned Medicare billing, Connecticut enrollment
  • 219 clinicians in this Medicare group
Surgery
85 SEYMOUR ST STE 415
Hartford, CT 06106
  • Reassigned Medicare billing, Connecticut enrollment
  • 1,921 clinicians in this Medicare group
Internal Medicine
75 FRANCIS ST
Boston, MA 02115
  • Reassigned Medicare billing, Massachusetts enrollment
  • 4,574 clinicians in this Medicare group
Anesthesiology
55 FOGG RD
Weymouth, MA 02190
  • Reassigned Medicare billing, Massachusetts enrollment
  • 671 clinicians in this Medicare group
Internal Medicine
143 LONGWATER DRIVE
Norwell, MA 02061
  • Reassigned Medicare billing, Massachusetts enrollment
  • 346 clinicians in this Medicare group
General Acute Care Hospital
CORNER OF ROUTE N12 & N7
Fort Defiance, AZ 86504
  • Reassigned Medicare billing, Texas enrollment
  • 518 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.

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
15 services14 patients

Hospital Affiliations CMS Care Compare

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

South Shore Hospital

Acute Care Hospitals · South Weymouth, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220100
Location55 Fogg RoadSouth Weymouth, MA 02190 · Norfolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06510 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
$93.86 typical visit price
range $60.82 – $183.10
Typical copayment $23.46 (range $15.20 – $45.77)
Most-billed visit code 99203
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
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 20

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

Nurse Practitioner (Family)
20 YORK ST
NEW HAVEN, CT 06510
Pediatrics (Neonatal-Perinatal Medicine)
20 YORK ST, DEPT OF NEONATOLOGY
NEW HAVEN, CT 06510
Durable Medical Equipment & Medical Supplies (Customized Equipment)
20 YORK ST
NEW HAVEN, CT 06510
Dietitian, Registered
20 YORK ST, FOOD AND NUTRITION EPB806
NEW HAVEN, CT 06510
Hospitalist
20 YORK ST
NEW HAVEN, CT 06510
Internal Medicine (Nephrology)
20 YORK ST
NEW HAVEN, CT 06510
Obstetrics & Gynecology
20 YORK ST
NEW HAVEN, CT 06510
Social Worker (Clinical)
20 YORK ST, SOCIAL WORK EP10-635
NEW HAVEN, CT 06510

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 Alexander Fleming-nouri's NPI number?

The NPI number for Alexander Fleming-nouri is 1083279954. It was assigned to this individual provider in the NPPES registry on May 7, 2019.

Where is Alexander Fleming-nouri located?

Alexander Fleming-nouri practices at 20 York St, New Haven, CT 06510. The listed phone number is (203) 688-4242.

What is Alexander Fleming-nouri's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Alexander Fleming-nouri enrolled in Medicare?

Yes. Alexander Fleming-nouri 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 Alexander Fleming-nouri's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Fleming-nouri reassigns Medicare benefits to 6 organizations: Bridgeport Hospital (Milford, CT), Hartford Healthcare Medical Group Specialists, PLLC (Hartford, CT), Brigham & Womens Physicians Organization Inc (Boston, MA), Coastal Medical Associates (Weymouth, MA), South Shore Medical Center, Inc. (Norwell, MA) and 1 more organization, listed in the Medicare section above. 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 Alexander Fleming-nouri's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alexander Fleming-nouri accept?

Health plans from Taro Health list Alexander Fleming-nouri 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 Alexander Fleming-nouri affiliated with any hospitals?

According to CMS data, Alexander Fleming-nouri is affiliated with South Shore Hospital.

When was this NPI record last updated?

The NPPES record for Alexander Fleming-nouri was last updated on October 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.