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DR. ISADORA GUGGENHEIM FNP
NPI 1851551519
Nurse Practitioner in Nyack, NY

Active since June 16, 2008PECOS EnrolledAccepts Medicare Assignment
8 ROCKLAND PLACE, NYACK, NY 10960(845) 893-2608(845) 358-2963 Get Directions Write a Review

NPPES record last updated: October 6, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Isadora Guggenheim Fnp NPPES

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

DR. ISADORA GUGGENHEIM FNP (NPI 1851551519) is an individual nurse practitioner in Nyack, New York, licensed in New York (F342569-01) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS and is a graduate of Other (2003).

NPPES Registry Identity

NPI1851551519
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameDR. ISADORA GUGGENHEIMCredential: FNP
Location Address8 ROCKLAND PLACENyack, NY 10960
Mailing Address8 Rockland PlaceNyack, NY 10960 · (845) 893-2608 · Fax (845) 358-2963
Phone(845) 893-2608
Fax(845) 358-2963
Sole ProprietorYes
Medical School CMSOtherGraduated 2003
Enumeration DateJune 16, 2008
Last NPPES UpdateOctober 6, 2020
NPPES CertifiedOctober 6, 2020
✔ NPI 1851551519 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in NY · F342569-01
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedPreventive Medicine · Preventive Medicine/Occupational Environmental MedicineTaxonomy 2083P0500X · License 000303 (CT)
8 ROCKLAND PLACE, Nyack, NY 10960
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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

Dr. Isadora Guggenheim Fnp 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 ID5799243663
PECOS Enrollment IDI20260820003305
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 Isadora Guggenheim reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Arc Healthresources Of Rockland, Inc.
6.1 mi
Internal Medicine
70 PHILLIPS HILL RD
New City, NY 10956
  • Reassigned Medicare billing, New York enrollment
  • 20 clinicians in this Medicare group
NPI 1154369056 (845) 267-0110

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 10960 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
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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 Isadora Guggenheim's NPI number?

The NPI number for Isadora Guggenheim is 1851551519. It was assigned to this individual provider in the NPPES registry on June 16, 2008.

Where is Isadora Guggenheim located?

Isadora Guggenheim practices at 8 Rockland Place, Nyack, NY 10960. The listed phone number is (845) 893-2608.

What is Isadora Guggenheim's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Isadora Guggenheim enrolled in Medicare?

Yes. Isadora Guggenheim 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 organization bills Medicare for Isadora Guggenheim's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Isadora Guggenheim reassigns Medicare benefits to Arc Healthresources Of Rockland, Inc. (New City, 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 Isadora Guggenheim'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 Isadora Guggenheim was last updated on October 6, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.