DR. FRANK ANDREW NELSON M.D.
NPI 1427126473
Internal Medicine - Gastroenterology in Bronx, NY
About Dr. Frank Andrew Nelson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. FRANK ANDREW NELSON M.D. (NPI 1427126473) is an individual gastroenterology provider in Bronx, New York, licensed in New York (182875) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai Hospital, and is a graduate of Icahn School Of Medicine At Mount Sinai (1989).
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
Dr. Frank Andrew Nelson 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
2Medicare enrollment records show Frank Nelson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Bronx, NY 10451
- Reassigned Medicare billing, New York enrollment
- 971 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- Also billed through NPI 1477932275 (New York)
- 104 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 11
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 2
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, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10451 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.
BRONX, NY 10451
BRONX, NY 10451
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 Frank Nelson's NPI number?
The NPI number for Frank Nelson is 1427126473. It was assigned to this individual provider in the NPPES registry on November 30, 2006.
Where is Frank Nelson located?
Frank Nelson practices at 234 E 149th St, Bronx, NY 10451. The listed phone number is (718) 579-5000.
What is Frank Nelson's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Frank Nelson enrolled in Medicare?
Yes. Frank Nelson 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 Frank Nelson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Frank Nelson reassigns Medicare benefits to 2 organizations: Downtown Bronx Medical Associates PC (Bronx, NY) and Icahn School Of Medicine At Mount Sinai (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 Frank Nelson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Frank Nelson affiliated with any hospitals?
According to CMS data, Frank Nelson is affiliated with Mount Sinai Hospital and Mount Sinai St Luke's Roosevelt Hospital.
When was this NPI record last updated?
The NPPES record for Frank Nelson was last updated on April 26, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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. Frank Andrew Nelson, M.D. · NPI 1427126473
Gastroenterology physician in Bronx, New York. Individual provider, active in the CMS NPPES registry since November 30, 2006.
## Identity
- **NPI:** 1427126473 (Entity type: Individual)
- **Enumerated:** November 30, 2006
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 182875 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 234 E 149TH ST, Bronx, NY 10451-5504
- **Phone:** (718) 579-5000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Downtown Bronx Medical Associates PC (NPI 1689618407, Bronx, NY); Icahn School Of Medicine At Mount Sinai (NPI 1730440777, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Icahn School Of Medicine At Mount Sinai, class of 1989
## Record status
- **NPPES last updated:** April 26, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1427126473) · Data from the CMS NPPES public registry.