LEONARD M. ZIR MD
NPI 1275509150
Internal Medicine - Cardiovascular Disease in Cambridge, MA

Q: What is Leonard Zir's NPI number?

The NPI number for Leonard Zir is 1275509150. It was assigned to this individual provider in the NPPES registry on February 28, 2006.

Q: What is Leonard Zir's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Leonard Zir was last updated on April 22, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.

Active since February 28, 2006PECOS Enrolled

300 MOUNT AUBURN ST, SUITE 310, CAMBRIDGE, MA 02138(617) 497-1560(617) 497-1109 Get Directions Write a Review

NPPES record last updated: April 22, 2011. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Leonard M. Zir Md NPPES

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

LEONARD M. ZIR MD (NPI 1275509150) is an individual cardiovascular disease provider in Cambridge, Massachusetts, licensed in Massachusetts (34331) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1275509150

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameLEONARD M. ZIRCredential: MD

Location Address300 MOUNT AUBURN ST, SUITE 310Cambridge, MA 02138-5600

Mailing Address300 Mount Auburn St, Suite 310Cambridge, MA 02138-5600 · (617) 497-1560 · Fax (617) 497-1109

Phone(617) 497-1560

Fax(617) 497-1109

Sole ProprietorNo

Enumeration DateFebruary 28, 2006

Last NPPES UpdateApril 22, 2011

✔ NPI 1275509150 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in MA · 34331

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

300 MOUNT AUBURN ST, Cambridge, MA 02138

Open in Google Maps ↗

Other Identifiers 5

Medicare UPINA35315MA

OtherB32105MA · Bcbs

Medicaid6187188MA

Other034331MA · Tufts

Medicare ID-Type UnspecifiedB32105MA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Leonard M. Zir Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02138 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

$78.84 typical visit price

range $21.07 – $155.29

Typical copayment $19.71 (range $5.26 – $38.82)

Most-billed visit code 99213

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.

DR. MARGARET LOVE MCLAUGHLIN M.D.

Internal Medicine (Nephrology)

300 MOUNT AUBURN ST, SUITE 515
CAMBRIDGE, MA 02138

Middlesex County (617) 864-1571

RODERICK H CROCKER JR. MD

Urology

300 MOUNT AUBURN ST, STE 519
CAMBRIDGE, MA 02138

Middlesex County (617) 547-4400

DR. THOMAS CAUGHEY MD

Internal Medicine (Hematology & Oncology)

300 MOUNT AUBURN ST, HEMA/ONC
CAMBRIDGE, MA 02138

Middlesex County (617) 497-9646

MISS JOANNE BRUNY NP

Nurse Practitioner (Family)

300 MOUNT AUBURN ST
CAMBRIDGE, MA 02138

Middlesex County (617) 492-3500

CAMBRIDGE OTOLARYNGOLOGY

Otolaryngology

300 MOUNT AUBURN ST, SUITE 308
CAMBRIDGE, MA 02138

Middlesex County (617) 354-1010

KAREN L AHLERT M.D.

Surgery

300 MOUNT AUBURN ST, SUITE 407
CAMBRIDGE, MA 02138

Middlesex County (617) 868-7456

DR. SHILPA JOSHI DESAI MD

Ophthalmology

300 MOUNT AUBURN ST
CAMBRIDGE, MA 02138

Middlesex County (617) 499-5571

DR. JULIO C. AYALA MD

Internal Medicine (Gastroenterology)

300 MOUNT AUBURN ST
CAMBRIDGE, MA 02138

Middlesex County (617) 499-0026

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 Leonard Zir's NPI number?

The NPI number for Leonard Zir is 1275509150. It was assigned to this individual provider in the NPPES registry on February 28, 2006.

Where is Leonard Zir located?

Leonard Zir practices at 300 Mount Auburn St Suite 310, Cambridge, MA 02138. The listed phone number is (617) 497-1560.

What is Leonard Zir's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Leonard Zir enrolled in Medicare?

Yes. Leonard Zir is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Leonard Zir was last updated on April 22, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.