MRS. JENNY TIEN DIEP MD
NPI 1225132533
Internal Medicine - Rheumatology in New York, NY
About Mrs. Jenny Tien Diep Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. JENNY TIEN DIEP MD (NPI 1225132533) is an individual rheumatology provider in New York, New York, licensed in New York (230002) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS, is affiliated with St Joseph Hospital, and maintains a secondary practice location in Bangor.
NPPES Registry Identity
Specialties & Licenses
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
Mrs. Jenny Tien Diep Md 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 Jenny Diep reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Bangor, ME 04401
- Reassigned Medicare billing, Maine enrollment
- 259 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 2
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.
St Joseph Hospital
Acute Care Hospitals · Bangor, MEHoulton Regional Hospital
Critical Access Hospitals · Houlton, MEPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10128 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Jenny Diep's NPI number?
The NPI number for Jenny Diep is 1225132533. It was assigned to this individual provider in the NPPES registry on September 8, 2006.
Where is Jenny Diep located?
Jenny Diep practices at 1088 Park Avenue, New York, NY 10128. The listed phone number is (212) 860-4000.
What is Jenny Diep's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Jenny Diep enrolled in Medicare?
Yes. Jenny Diep 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 Jenny Diep's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jenny Diep reassigns Medicare benefits to St. Joseph Hospital (Bangor, ME). 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 Jenny Diep's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Jenny Diep affiliated with any hospitals?
According to CMS data, Jenny Diep is affiliated with St Joseph Hospital and Houlton Regional Hospital.
When was this NPI record last updated?
The NPPES record for Jenny Diep was last updated on February 3, 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.
# Mrs. Jenny Tien Diep, MD · NPI 1225132533
Rheumatology physician in New York, New York. Individual provider, active in the CMS NPPES registry since September 8, 2006.
## Identity
- **NPI:** 1225132533 (Entity type: Individual)
- **Enumerated:** September 8, 2006
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **State license:** 230002 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 1088 PARK AVENUE, New York, NY 10128-1132
- **Phone:** (212) 860-4000 · **Fax:** (212) 722-7365
## 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:** St. Joseph Hospital (NPI 1154321545, Bangor, ME), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York At Stony Brook, School Of Medicine, class of 2001
## Record status
- **NPPES last updated:** February 3, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1225132533) · Data from the CMS NPPES public registry.