MS. MARNEY ELLEN GRUBER M.D.
NPI 1083857601
Internal Medicine in Harrison, NY
About Ms. Marney Ellen Gruber M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARNEY ELLEN GRUBER M.D. (NPI 1083857601) is an individual internal medicine provider in Harrison, New York, licensed in Florida (ME169314) and active in the NPI registry since April 2009. She is enrolled in Medicare PECOS, is affiliated with Lenox Hill Hospital, and is a graduate of Other (2009).
NPPES Registry Identity
Specialties & Licenses 3
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
Ms. Marney Ellen Gruber M.d. 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.
Medicare Billing Reassignments
16Medicare enrollment records show Marney Gruber reassigns Medicare billing to 16 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Great Neck, NY 11021
- Reassigned Medicare billing, New York enrollment
- 9,353 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 1,067 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 769 clinicians in this Medicare group
New York, NY 10024
- Reassigned Medicare billing, New York enrollment
- 245 clinicians in this Medicare group
Elmhurst, NY 11373
- Reassigned Medicare billing, New York enrollment
- 836 clinicians in this Medicare group
Brooklyn, NY 11225
- Reassigned Medicare billing, New York enrollment
- 20 clinicians in this Medicare group
Southampton, NY 11968
- Reassigned Medicare billing, New York enrollment
- 134 clinicians in this Medicare group
Columbus, OH 43213
- Reassigned Medicare billing, Ohio enrollment
- 62 clinicians in this Medicare group
Indianapolis, IN 46220
- Reassigned Medicare billing, Florida, Illinois, Massachusetts, Michigan and North Carolina enrollments
- Medicare enrollment name: Cityblock Medical Practice PA
- 41 clinicians in this Medicare group
Memphis, TN 38128
- Reassigned Medicare billing, Tennessee enrollment
- 250 clinicians in this Medicare group
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
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lenox Hill Hospital
Acute Care Hospitals · New York, NYElmhurst Hospital Center
Acute Care Hospitals · Elmhurst, NYSuny/Stony Brook University Hospital
Acute Care Hospitals · Stony Brook, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10528 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Marney Gruber's NPI number?
The NPI number for Marney Gruber is 1083857601. It was assigned to this individual provider in the NPPES registry on April 13, 2009.
Where is Marney Gruber located?
Marney Gruber practices at 237 Union Ave, Harrison, NY 10528. The listed phone number is (914) 714-9821.
What is Marney Gruber's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Marney Gruber enrolled in Medicare?
Yes. Marney Gruber 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 Marney Gruber's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marney Gruber reassigns Medicare benefits to 16 organizations: North Shore-Lij Medical PC (Great Neck, NY), Fpa Hospital Based (New York, NY), Icahn School Of Medicine At Mount Sinai (New York, NY), Icahn School Of Medicine At Mount Sinai (New York, NY), Icahn School Of Medicine At Mount Sinai (Elmhurst, NY) and 11 more organizations, listed in the Medicare section above. 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 Marney Gruber's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Marney Gruber affiliated with any hospitals?
According to CMS data, Marney Gruber is affiliated with Lenox Hill Hospital, Elmhurst Hospital Center and Suny/Stony Brook University Hospital.
When was this NPI record last updated?
The NPPES record for Marney Gruber was last updated on September 17, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Ms. Marney Ellen Gruber, M.D. · NPI 1083857601
Internal Medicine physician in Harrison, New York. Individual provider, active in the CMS NPPES registry since April 13, 2009.
## Identity
- **NPI:** 1083857601 (Entity type: Individual)
- **Enumerated:** April 13, 2009
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** ME169314 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 237 UNION AVE, Harrison, NY 10528-1711
- **Phone:** (914) 714-9821 · **Fax:** (914) 835-8021
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 16 organizations under Medicare reassignment (form CMS-855R): North Shore-Lij Medical PC (NPI 1053688572, Great Neck, NY); Fpa Hospital Based (NPI 1841531795, New York, NY); Icahn School Of Medicine At Mount Sinai (NPI 1427493113, New York, NY); Icahn School Of Medicine At Mount Sinai (NPI 1124392238, New York, NY); Icahn School Of Medicine At Mount Sinai (NPI 1063766038, Elmhurst, NY); and 11 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** September 17, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1083857601) · Data from the CMS NPPES public registry.