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Dr. John M Leventhal , MD

Pediatrics β€’ New Haven, CT

Active NPI 1801879622 Individual Practitioner Male Practitioner
Practice location in NPPES

789 Howard Ave, Ynhh Basement
New Haven, CT 065191304

Call 2036882468 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

789 Howard Ave
Ynhh Basement

New Haven, CT 065191304

Telephone 2036882468
Fax 2036887274
Organization at the Same NPPES Address or Phone
Yale-New Haven Hospital Facility NPI 1962653287

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $1,686.00 in 2020

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2020.

Guide: How to read an Open Payments record

NPI first issued

2005

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Leventhal has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Leventhal as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in New Haven and Connecticut

163 active clinicians are listed under Pediatrics with a practice address in New Haven, CT (1,053 in Connecticut).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in New Haven

0.6% of these 163 clinicians have the CMS telehealth indicator.

12.3% of these 163 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Open Payments (2020), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments Β· Program Year 2020

Program year 2020 (payments made January 1 – December 31, 2020): fewer than 11 records totaling $1,686.00.

Manufacturer Payment Nature Product Type Amount ($)
Sanofi and Genzyme US Companies
Consulting Fee
Cash or cash equivalent
DUPIXENT General $1,686.00

Source: CMS Open Payments, program year 2020, released June 30, 2026.

Specialties & License Numbers Reported to NPPES

Pediatrics Primary Specialty

NUCC Taxonomy Code: 208000000X

License # reported to NPPES CT 020734

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Connecticut Department of Public Health Verification.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
001207349 (CT)

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - PEDIATRIC MEDICINE

Medicare Enrollment ID

I20100805000772

Enrollment State Jurisdiction

CT

PECOS Control ID

9032242433

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

1 listed
NPI 1962485185

Doctor of Medicine (M.D.)

Career & Practice History

NPI enumerated November 25, 2005.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to November 2026.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1801879622
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: November 25, 2005
Last Update: February 13, 2009
Sole Proprietor: No

Other Pediatrics Specialists in New Haven

All Pediatrics Specialists in New Haven

Mailing Address

Po Box 9805, 300 George St, 6th Floor

New Haven, CT 065360805

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.