Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

JAVIER ERNESTO MARTINEZ MD
NPI 1366369431
Pediatrics in Allentown, PA

Q: What is Javier Martinez's NPI number?

The NPI number for Javier Martinez is 1366369431. It was assigned to this individual provider in the NPPES registry on June 30, 2026.

Q: What is Javier Martinez's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Javier Martinez was last updated on June 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 53 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.

Active since June 30, 2026PECOS Enrolled

450 CHEW ST, ALLENTOWN, PA 18102(484) 822-7850(833) 691-7856 Get Directions Write a Review

NPPES record added: June 30, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Javier Ernesto Martinez Md NPPES

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

JAVIER ERNESTO MARTINEZ MD (NPI 1366369431) is an individual pediatrics provider in Allentown, Pennsylvania, licensed in Pennsylvania (MT237435) and active in the NPI registry since June 2026. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1366369431

Entity TypeIndividualMale

Primary Taxonomy208000000X

Provider Legal NameJAVIER ERNESTO MARTINEZCredential: MD

Location Address450 CHEW STAllentown, PA 18102-3434

Mailing Address1700 St Lukes BlvdEaston, PA 18045-5670 · (484) 822-7850 · Fax (833) 691-7856

Phone(484) 822-7850

Fax(833) 691-7856

Sole ProprietorNo

Enumeration DateJune 30, 2026

NPPES CertifiedJune 30, 2026

✔ NPI 1366369431 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in PA · MT237435

Definition

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.

450 CHEW ST, Allentown, PA 18102

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Javier Ernesto Martinez 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 18102 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

$84.88 typical visit price

range $54.64 – $166.87

Typical copayment $21.22 (range $13.66 – $41.71)

Most-billed visit code 99203

Established Patient

$96.82 typical visit price

range $17.33 – $135.84

Typical copayment $24.20 (range $4.33 – $33.96)

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 19

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

ST. LUKE'S PHYSICIAN GROUP INC.

Pediatrics (Adolescent Medicine)

450 CHEW ST
ALLENTOWN, PA 18102

Lehigh County (610) 776-4767

HANADI ABOU DARGHAM MD

Family Medicine

450 CHEW ST
ALLENTOWN, PA 18102

Lehigh County (610) 776-4888

ANNA SHESTOPALOVA

Family Medicine

450 CHEW ST, SUITE 101
ALLENTOWN, PA 18102

Lehigh County (610) 776-4888

ST LUKE'S SACRED HEART CAMPUS

Family Medicine

450 CHEW ST
ALLENTOWN, PA 18102

Lehigh County (610) 776-5315

DESIREE GUZMAN

Nurse Practitioner (Gerontology)

450 CHEW ST, SUITE 101
ALLENTOWN, PA 18102

Lehigh County (610) 776-4888

ASHLEY MARIE LASSITER MA

Counselor (Mental Health)

450 CHEW ST
ALLENTOWN, PA 18102

Lehigh County (610) 776-5465

MARISSA A DURAKO PAC

Physician Assistant (Medical)

450 CHEW ST
ALLENTOWN, PA 18102

Lehigh County (610) 776-4888

ESTHER EDITH BREW M.D.

Family Medicine

450 CHEW ST, SUITE 101
ALLENTOWN, PA 18102

Lehigh County (610) 776-4888

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 Javier Martinez's NPI number?

The NPI number for Javier Martinez is 1366369431. It was assigned to this individual provider in the NPPES registry on June 30, 2026.

Where is Javier Martinez located?

Javier Martinez practices at 450 Chew St, Allentown, PA 18102. The listed phone number is (484) 822-7850.

What is Javier Martinez's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Javier Martinez enrolled in Medicare?

Yes. Javier Martinez is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Javier Martinez was last updated on June 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 53 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.