DR. JOHN GIAN M.D.
NPI 1316931520
Internal Medicine in Brooklyn, NY
About Dr. John Gian M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN GIAN M.D. (NPI 1316931520) is an individual internal medicine provider in Brooklyn, New York, licensed in New York (223263-1) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS and is a graduate of New York Medical College (1998).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Dr. John Gian 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 Reassignment
Medicare enrollment records show John Gian reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Brooklyn, NY 11206
- Reassigned Medicare billing, New York enrollment
- 1,615 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11206 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.
BROOKLYN, NY 11206
BROOKLYN, NY 11206
BROOKLYN, NY 11206
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 John Gian's NPI number?
The NPI number for John Gian is 1316931520. It was assigned to this individual provider in the NPPES registry on September 2, 2005.
Where is John Gian located?
John Gian practices at 760 Broadway Woodhull Medical & Mental Health Center, Brooklyn, NY 11206. The listed phone number is (718) 963-8000.
What is John Gian's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is John Gian enrolled in Medicare?
Yes. John Gian 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 John Gian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Gian reassigns Medicare benefits to New York City Health And Hospitals Corporation (Brooklyn, 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 John Gian'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 John Gian was last updated on April 21, 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.
# Dr. John Gian, M.D. · NPI 1316931520
Internal Medicine physician in Brooklyn, New York. Individual provider, active in the CMS NPPES registry since September 2, 2005.
## Identity
- **NPI:** 1316931520 (Entity type: Individual)
- **Enumerated:** September 2, 2005
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 223263-1 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 760 BROADWAY, WOODHULL MEDICAL & MENTAL HEALTH CENTER, Brooklyn, NY 11206
- **Phone:** (718) 963-8000
## 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:** New York City Health And Hospitals Corporation (NPI 1922736727, Brooklyn, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York Medical College, class of 1998
## Record status
- **NPPES last updated:** April 21, 2015
- **Other identifiers:** Medicare UPIN H55399; Medicaid 02227250 (NY); Medicare ID-Type Unspecified 201SY1 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1316931520) · Data from the CMS NPPES public registry.