JOHN WEISER MD
NPI 1790779973
Family Medicine in New York, NY
About John Weiser Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN WEISER MD (NPI 1790779973) is an individual family medicine provider in New York, New York, licensed in New York (195979) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John Weiser Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Weiser reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Atlanta, GA 30303
- Reassigned Medicare billing, Georgia enrollment
- 771 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10003 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 10003
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 Weiser's NPI number?
The NPI number for John Weiser is 1790779973. It was assigned to this individual provider in the NPPES registry on September 2, 2005.
Where is John Weiser located?
John Weiser practices at 16 E 16th St, New York, NY 10003. The listed phone number is (212) 924-7744.
What is John Weiser's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is John Weiser enrolled in Medicare?
Yes. John Weiser is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Weiser's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Weiser reassigns Medicare benefits to Grady Memorial Hospital Corporation (Atlanta, GA). 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 Weiser's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Weiser accept?
Health plans from Ambetter Health list John Weiser as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for John Weiser was last updated on July 19, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# John Weiser, MD · NPI 1790779973
Family Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since September 2, 2005.
## Identity
- **NPI:** 1790779973 (Entity type: Individual)
- **Enumerated:** September 2, 2005
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 195979 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 16 E 16TH ST, New York, NY 10003-3105
- **Phone:** (212) 924-7744 · **Fax:** (212) 691-2786
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Grady Memorial Hospital Corporation (NPI 1114243813, Atlanta, GA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 19, 2007
- **Other identifiers:** Medicaid 00903700 (NY); Medicare UPIN B58529 (NY); Medicare PIN 51J842 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1790779973) · Data from the CMS NPPES public registry.