DUNCAN GROSSMAN DO
NPI 1679078588
Emergency Medicine in New York, NY
About Duncan Grossman Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DUNCAN GROSSMAN DO (NPI 1679078588) is an individual emergency medicine provider in New York, New York, licensed in New York (312895-01) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai Hospital, and is a graduate of University Of New England, College Of Osteo Medicine (2018).
NPPES Registry Identity
Specialties & Licenses
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
Duncan Grossman Do 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
5Medicare enrollment records show Duncan Grossman reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
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
- 325 clinicians in this Medicare group
New York, NY 10024
- Reassigned Medicare billing, New York enrollment
- 245 clinicians in this Medicare group
New York, NY 10037
- Reassigned Medicare billing, New York enrollment
- 2,094 clinicians in this Medicare group
Elmhurst, NY 11373
- Reassigned Medicare billing, New York enrollment
- 836 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 4
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Sinai Hospital
Acute Care Hospitals · New York, NYMount Sinai St Luke's Roosevelt Hospital
Acute Care Hospitals · New York, NYElmhurst Hospital Center
Acute Care Hospitals · Elmhurst, NYHarlem Hospital Center
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10029 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10029
NEW YORK, NY 10029
NEW YORK, NY 10029
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 Duncan Grossman's NPI number?
The NPI number for Duncan Grossman is 1679078588. It was assigned to this individual provider in the NPPES registry on March 25, 2018.
Where is Duncan Grossman located?
Duncan Grossman practices at 1468 Madison Ave, New York, NY 10029. The listed phone number is (212) 241-6500.
What is Duncan Grossman's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Duncan Grossman enrolled in Medicare?
Yes. Duncan Grossman 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 Duncan Grossman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Duncan Grossman reassigns Medicare benefits to 5 organizations: 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), Physician Affiliate Group Of New York PC (New York, NY) and Icahn School Of Medicine At Mount Sinai (Elmhurst, 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 Duncan Grossman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Duncan Grossman affiliated with any hospitals?
According to CMS data, Duncan Grossman is affiliated with Mount Sinai Hospital, Mount Sinai St Luke's Roosevelt Hospital, Elmhurst Hospital Center and Harlem Hospital Center.
When was this NPI record last updated?
The NPPES record for Duncan Grossman was last updated on May 10, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Duncan Grossman, DO · NPI 1679078588
Emergency Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since March 25, 2018.
## Identity
- **NPI:** 1679078588 (Entity type: Individual)
- **Enumerated:** March 25, 2018
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 312895-01 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 1468 MADISON AVE, New York, NY 10029-6508
- **Phone:** (212) 241-6500
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Fpa Hospital Based (NPI 1841531795, New York, NY); Icahn School Of Medicine At Mount Sinai (NPI 1346908662, New York, NY); Icahn School Of Medicine At Mount Sinai (NPI 1124392238, New York, NY); Physician Affiliate Group Of New York PC (NPI 1013375526, New York, NY); Icahn School Of Medicine At Mount Sinai (NPI 1063766038, Elmhurst, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of New England, College Of Osteo Medicine, class of 2018
## Record status
- **NPPES last updated:** May 10, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1679078588) · Data from the CMS NPPES public registry.