CHRISTOPHER WILLIAM HAHN M.D.
NPI 1790031417
Emergency Medicine in New York, NY
About Christopher William Hahn M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTOPHER WILLIAM HAHN M.D. (NPI 1790031417) is an individual emergency medicine provider in New York, New York, licensed in New York (283627) and active in the NPI registry since July 2012. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai St Luke's Roosevelt Hospital, and maintains a secondary practice location in Oakland.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Christopher William Hahn 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
3Medicare enrollment records show Christopher Hahn reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10024
- Reassigned Medicare billing, New York enrollment
- 245 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 325 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 1,067 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 5
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Sinai St Luke's Roosevelt Hospital
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10019 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 10019
NEW YORK, NY 10019
NEW YORK, NY 10019
NEW YORK, NY 10019
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 Christopher Hahn's NPI number?
The NPI number for Christopher Hahn is 1790031417. It was assigned to this individual provider in the NPPES registry on July 31, 2012.
Where is Christopher Hahn located?
Christopher Hahn practices at 1000 10th Ave, New York, NY 10019. The listed phone number is (212) 241-6500.
What is Christopher Hahn's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Christopher Hahn enrolled in Medicare?
Yes. Christopher Hahn 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 Christopher Hahn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Hahn reassigns Medicare benefits to 3 organizations: Icahn School Of Medicine At Mount Sinai (New York, NY), Icahn School Of Medicine At Mount Sinai (New York, NY) and Fpa Hospital Based (New York, 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 Christopher Hahn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Christopher Hahn affiliated with any hospitals?
According to CMS data, Christopher Hahn is affiliated with Mount Sinai St Luke's Roosevelt Hospital.
When was this NPI record last updated?
The NPPES record for Christopher Hahn was last updated on July 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Christopher William Hahn, M.D. · NPI 1790031417
Emergency Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since July 31, 2012.
## Identity
- **NPI:** 1790031417 (Entity type: Individual)
- **Enumerated:** July 31, 2012
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 283627 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 10TH AVE, New York, NY 10019-1147
- **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:** 3 organizations under Medicare reassignment (form CMS-855R): Icahn School Of Medicine At Mount Sinai (NPI 1124392238, New York, NY); Icahn School Of Medicine At Mount Sinai (NPI 1477899078, New York, NY); Fpa Hospital Based (NPI 1487995700, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Columbia University College Of Physicians And Surgeons, class of 2012
## Record status
- **NPPES last updated:** July 31, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1790031417) · Data from the CMS NPPES public registry.