TIMOTHY TA-CHIH FERNG M.D.
NPI 1548587546
Internal Medicine - Hematology & Oncology in New York, NY
About Timothy Ta-chih Ferng M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TIMOTHY TA-CHIH FERNG M.D. (NPI 1548587546) is an individual hematology & oncology provider in New York, New York, licensed in California (A136491) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS and is a graduate of Wayne State University School Of Medicine (2010).
NPPES Registry Identity
Specialties & Licenses 2
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
Timothy Ta-chih Ferng 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 Timothy Ferng reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 2,112 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 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 3
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 10065 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10065
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 Timothy Ferng's NPI number?
The NPI number for Timothy Ferng is 1548587546. It was assigned to this individual provider in the NPPES registry on April 29, 2010.
Where is Timothy Ferng located?
Timothy Ferng practices at 1275 York Ave Weill Cornell Internal Medicine Associates, Box 148, New York, NY 10065. The listed phone number is (212) 639-2000.
What is Timothy Ferng's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Timothy Ferng enrolled in Medicare?
Yes. Timothy Ferng 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 Timothy Ferng's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Ferng reassigns Medicare benefits to 3 organizations: Regents Of The University Of California (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, CA). 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 Timothy Ferng'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 Timothy Ferng was last updated on July 17, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Timothy Ta-Chih Ferng, M.D. · NPI 1548587546
Hematology & Oncology physician in New York, New York. Individual provider, active in the CMS NPPES registry since April 29, 2010.
## Identity
- **NPI:** 1548587546 (Entity type: Individual)
- **Enumerated:** April 29, 2010
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** A136491 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1275 YORK AVE, WEILL CORNELL INTERNAL MEDICINE ASSOCIATES, BOX 148, New York, NY 10065-6007
- **Phone:** (212) 639-2000
## 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): Regents Of The University Of California (NPI 1235322348, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 2010
## Record status
- **NPPES last updated:** July 17, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1548587546) · Data from the CMS NPPES public registry.