KENNETH LYLE FLAX
NPI 1215354485
Anesthesiology in New York, NY
About Kenneth Lyle Flax NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KENNETH LYLE FLAX (NPI 1215354485) is an individual anesthesiology provider in New York, New York, licensed in New York (292472) and active in the NPI registry since March 2014. He is enrolled in Medicare PECOS and is a graduate of Icahn School Of Medicine At Mount Sinai (2014).
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
Kenneth Lyle Flax 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 Kenneth Flax reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 1,067 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 245 clinicians in this Medicare group
New York, NY 10021
- Reassigned Medicare billing, New York enrollment
- 247 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.
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 10029
NEW YORK, NY 10029
NEW YORK, NY 10029
NEW YORK, NY 10029
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 Kenneth Flax's NPI number?
The NPI number for Kenneth Flax is 1215354485. It was assigned to this individual provider in the NPPES registry on March 25, 2014.
Where is Kenneth Flax located?
Kenneth Flax practices at 1 Gustave L Levy Pl, New York, NY 10029. The listed phone number is (212) 987-3100.
What is Kenneth Flax's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Kenneth Flax enrolled in Medicare?
Yes. Kenneth Flax 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 Kenneth Flax's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kenneth Flax reassigns Medicare benefits to 3 organizations: Fpa Hospital Based (New York, NY), Icahn School Of Medicine At Mount Sinai (New York, NY) and Weill Medical College Of Cornell (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 Kenneth Flax'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 Kenneth Flax was last updated on August 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.
# Kenneth Lyle Flax · NPI 1215354485
Anesthesiology physician in New York, New York. Individual provider, active in the CMS NPPES registry since March 25, 2014.
## Identity
- **NPI:** 1215354485 (Entity type: Individual)
- **Enumerated:** March 25, 2014
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 292472 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 GUSTAVE L LEVY PL, New York, NY 10029-6504
- **Phone:** (212) 987-3100
## 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): Fpa Hospital Based (NPI 1629319413, New York, NY); Icahn School Of Medicine At Mount Sinai (NPI 1447008446, New York, NY); Weill Medical College Of Cornell (NPI 1619917341, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Icahn School Of Medicine At Mount Sinai, class of 2014
## Record status
- **NPPES last updated:** August 18, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1215354485) · Data from the CMS NPPES public registry.