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MARIANA MARCU
NPI 1336222165
Allergy & Immunology - Allergy in New York, NY

Active since October 23, 2006PECOS EnrolledAccepts Medicare Assignment
30E 40TH ST 802, NEW YORK, NY 10016(212) 481-1744(212) 685-0625 Get Directions Write a Review

NPPES record last updated: August 25, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mariana Marcu NPPES

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

MARIANA MARCU (NPI 1336222165) is an individual allergy provider in New York, New York, licensed in New York (224018) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1987).

NPPES Registry Identity

NPI1336222165
Entity TypeIndividualFemale
Primary Taxonomy207KA0200X
Provider Legal NameMARIANA MARCU
Location Address30E 40TH ST 802New York, NY 10016-1201
Mailing Address30 East 40th Street Suite 802New York, NY 10016 · (212) 481-1744 · Fax (212) 481-0244
Phone(212) 481-1744
Fax(212) 685-0625
Sole ProprietorNo
Medical School CMSOtherGraduated 1987
Enumeration DateOctober 23, 2006
Last NPPES UpdateAugust 25, 2015
✔ NPI 1336222165 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAllergy & Immunology · AllergyAllopathic & Osteopathic Physicians
Taxonomy Code207KA0200X
License✔ Licensed in NY · 224018
Definition
A physician who specializes in the diagnosis, treatment, and management of allergies. Source: National Uniform Claim Committee
Also ListedInternal MedicineTaxonomy 207R00000X · License 224018 (NY)
30E 40TH ST 802, New York, NY 10016
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Other Identifiers 3

Medicaid02270780NY
Medicare ID-Type Unspecified5N6031NY
Medicare UPINH56274

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

Mariana Marcu 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 ID648264952
PECOS Enrollment IDI20040410000152
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 Reassignments

3

Medicare enrollment records show Mariana Marcu reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Allergy & Asthma Care Of Manhattan PLLC
Same address
Internal Medicine
30 E 40TH ST, 802
New York, NY 10016
  • Reassigned Medicare billing, New York enrollment
NPI 1578605291 (212) 481-1744
Monarch Allergy Medical Services Of New York PC
1.2 mi
Allergy
176 3RD AVE
New York, NY 10003
  • Reassigned Medicare billing, New York enrollment
  • 10 clinicians in this Medicare group
NPI 1457052847 (888) 510-0905
Allergy & Asthma Consultants Of Rockland And Bergen PC
24 mi
Allergy
2 CROSFIELD AVE, SUITE 406
West Nyack, NY 10994
  • Reassigned Medicare billing, New York enrollment
  • 6 clinicians in this Medicare group
NPI 1306965744 (845) 353-9600

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 2

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
93 services15 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
12 services12 patients

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 Mariana Marcu's NPI number?

The NPI number for Mariana Marcu is 1336222165. It was assigned to this individual provider in the NPPES registry on October 23, 2006.

Where is Mariana Marcu located?

Mariana Marcu practices at 30E 40th St 802, New York, NY 10016. The listed phone number is (212) 481-1744.

What is Mariana Marcu's specialty?

The primary specialty registered for this NPI is Allergy & Immunology, specializing in Allergy, with taxonomy code 207KA0200X.

Is Mariana Marcu enrolled in Medicare?

Yes. Mariana Marcu 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 organizations bill Medicare for Mariana Marcu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mariana Marcu reassigns Medicare benefits to 3 organizations: Allergy & Asthma Care Of Manhattan PLLC (New York, NY), Monarch Allergy Medical Services Of New York PC (New York, NY) and Allergy & Asthma Consultants Of Rockland And Bergen PC (West Nyack, NY). Each 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 Mariana Marcu'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 Mariana Marcu was last updated on August 25, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.