MIRIAM TREGGIARI MD
NPI 1689899668
Anesthesiology in New Haven, CT

Active since April 16, 2007PECOS EnrolledAccepts Medicare Assignment
333 CEDAR ST, NEW HAVEN, CT 06510(203) 785-2802(203) 785-6664 Get Directions Write a Review

NPPES record last updated: April 27, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Apr 27, 2022, Jul 22, 2019 (2 updates tracked since 2019).

About Miriam Treggiari Md NPPES

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

MIRIAM TREGGIARI MD (NPI 1689899668) is an individual anesthesiology provider in New Haven, Connecticut, licensed in North Carolina (2022-00850) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS, is affiliated with Duke University Hospital, and maintains a secondary practice location in Seattle.

NPPES Registry Identity

NPI1689899668
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameMIRIAM TREGGIARICredential: MD
Location Address333 CEDAR STNew Haven, CT 06510
Mailing AddressPo Box 110566Durham, NC 27709-5566 · (919) 620-4855 · Fax (919) 620-4921
Fax(203) 785-6664
Sole ProprietorNo
Medical School CMSOtherGraduated 1990
Enumeration DateApril 16, 2007
Last NPPES UpdateApril 27, 20222 updates tracked since enumeration
NPPES CertifiedApril 27, 2022
✔ NPI 1689899668 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in NC · 2022-00850✔ Licensed in CT · 63658
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
333 CEDAR ST, New Haven, CT 06510

Secondary Practice Location 1

Location 1325 9th AveSeattle, WA 98104-2420 · Phone (206) 731-3059

Other Identifiers 2

Medicaid1689899668WA
OtherP00115026WA · Rail Road Medicare

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

Miriam Treggiari Md 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 ID1153447388
PECOS Enrollment IDI20220511001122
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 Miriam Treggiari reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Foot and Ankle Surgery
2609 N DUKE ST STE 301
Durham, NC 27704
  • Reassigned Medicare billing, North Carolina enrollment
  • 3,671 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.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
45 services17 patients

Hospital Affiliations CMS Care Compare

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

Duke University Hospital

Acute Care Hospitals · Durham, NC
5/5 CMS rating
OwnershipProprietary
CMS Certification Number340030
Location2100 Erwin RdDurham, NC 27705 · Durham County
Emergency services Birthing friendly

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.

Internal Medicine (Interventional Cardiology)
333 CEDAR ST, DCB 3
NEW HAVEN, CT 06510
Internal Medicine (Gastroenterology)
333 CEDAR ST, YNHH INTERNAL MEDICINE-GI,SECTION OF DIGESTIVE DISEASES
NEW HAVEN, CT 06510
Anesthesiology (Pediatric Anesthesiology)
333 CEDAR ST, TMP 3
NEW HAVEN, CT 06510
Student in an Organized Health Care Education/Training Program
333 CEDAR ST, YALE-NEW HAVEN HOSPITAL DEPARTMENT OF PEDIATRICS
NEW HAVEN, CT 06510
Anesthesiology
333 CEDAR ST
NEW HAVEN, CT 06510
Internal Medicine (Cardiovascular Disease)
333 CEDAR ST, FMP 3
NEW HAVEN, CT 06510
Nurse Practitioner (Psychiatric/Mental Health)
333 CEDAR ST
NEW HAVEN, CT 06510
Internal Medicine (Medical Oncology)
333 CEDAR ST
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 Miriam Treggiari's NPI number?

The NPI number for Miriam Treggiari is 1689899668. It was assigned to this individual provider in the NPPES registry on April 16, 2007.

Where is Miriam Treggiari located?

Miriam Treggiari practices at 333 Cedar St, New Haven, CT 06510. The listed phone number is (203) 785-2802.

What is Miriam Treggiari's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Miriam Treggiari enrolled in Medicare?

Yes. Miriam Treggiari 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 Miriam Treggiari's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Miriam Treggiari reassigns Medicare benefits to Duke Health Integrated Practice, Inc (Durham, NC). 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 Miriam Treggiari's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Miriam Treggiari accept?

Health plans from Cigna Healthcare list Miriam Treggiari 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 Miriam Treggiari affiliated with any hospitals?

According to CMS data, Miriam Treggiari is affiliated with Duke University Hospital.

When was this NPI record last updated?

The NPPES record for Miriam Treggiari was last updated on April 27, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.