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JULIO MESSER M.D.
NPI 1285648212
Internal Medicine - Gastroenterology in New York, NY

Active since July 27, 2006PECOS Enrolled
123 E 78TH ST, NEW YORK, NY 10021(212) 288-8787(212) 628-0194 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Julio Messer M.d. NPPES

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

JULIO MESSER M.D. (NPI 1285648212) is an individual gastroenterology provider in New York, New York, licensed in New York (148783) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1285648212
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameJULIO MESSERCredential: M.D.
Location Address123 E 78TH STNew York, NY 10021-0301
Mailing Address123 E 78th StNew York, NY 10021-0301 · (212) 288-8787 · Fax (212) 628-0194
Phone(212) 288-8787
Fax(212) 628-0194
Sole ProprietorYes
Enumeration DateJuly 27, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1285648212 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in NY · 148783
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Also ListedInternal MedicineTaxonomy 207R00000X · License 148783 (NY)
123 E 78TH ST, New York, NY 10021
Open in Google Maps ↗

Other Identifiers 1

Medicaid00722885NY

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Julio Messer M.d. 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.

Medicare Billing Reassignment

Medicare enrollment records show Julio Messer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Icahn School Of Medicine At Mount Sinai
5.4 mi
Anesthesiology
7901 BROADWAY
Elmhurst, NY 11373
  • Reassigned Medicare billing, New York enrollment
  • 836 clinicians in this Medicare group
NPI 1063766038 (718) 334-1591

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10021 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
$150.24 typical visit price
range $65.69 – $198.19
Typical copayment $37.56 (range $16.42 – $49.54)
Most-billed visit code 99204
Established Patient
$114.88 typical visit price
range $21.20 – $160.66
Typical copayment $28.72 (range $5.30 – $40.16)
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.

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 Julio Messer's NPI number?

The NPI number for Julio Messer is 1285648212. It was assigned to this individual provider in the NPPES registry on July 27, 2006.

Where is Julio Messer located?

Julio Messer practices at 123 E 78th St, New York, NY 10021. The listed phone number is (212) 288-8787.

What is Julio Messer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Julio Messer enrolled in Medicare?

Yes. Julio Messer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Julio Messer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Julio Messer reassigns Medicare benefits to Icahn School Of Medicine At Mount Sinai (Elmhurst, NY). 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 Julio Messer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Julio Messer was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.