1. Home
  2. Directory
  3. New York
  4. New York New York
  5. Internal Medicine
  6. NPI Profile

VIVIAN HAYASHI MD
NPI 1275559403
Internal Medicine in New York, NY

Active since July 14, 2006PECOS Enrolled
423 E 23RD ST, NEW YORK, NY 10010(212) 686-7500 Get Directions Write a Review

NPPES record last updated: March 24, 2009. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Vivian Hayashi Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

VIVIAN HAYASHI MD (NPI 1275559403) is an individual internal medicine provider in New York, New York, licensed in New York (234959) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1275559403
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameVIVIAN HAYASHICredential: MD
Location Address423 E 23RD STNew York, NY 10010-5011
Mailing Address423 E 23rd StNew York, NY 10010-5011 · (212) 686-7500
Phone(212) 686-7500
Sole ProprietorNo
Enumeration DateJuly 14, 2006
Last NPPES UpdateMarch 24, 2009
✔ NPI 1275559403 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 234959
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
423 E 23RD ST, New York, NY 10010
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Vivian Hayashi Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10010 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$150.24 typical visit price
range $65.69 – $198.19
Typical copayment $37.56 (range $16.42 – $49.54)
Most-billed visit code 99204
Established Patient
$114.88 typical visit price
range $21.20 – $160.66
Typical copayment $28.72 (range $5.30 – $40.16)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

DR. JASON H EPSTEIN MD
Anesthesiology (Pain Medicine)
423 E 23RD ST
NEW YORK, NY 10010
New York County (212) 686-7500
MR. GREG DATILES GONZALES RRT-NPS, RPFT, AEC
Respiratory Therapist, Registered (Critical Care)
423 E 23RD ST, RESPIRATORY CARE SERVICES ROOM 13095S
NEW YORK, NY 10010
New York County (212) 686-7500
DR. LAMONT JORDAN BARLOW
Urology
423 E 23RD ST
NEW YORK, NY 10010
New York County (212) 686-7500
MRS. PASCALE FILS-AIME RRT
Respiratory Therapist, Registered (General Care)
423 E 23RD ST, RESPIRATORY CARE RM 13090S
NEW YORK, NY 10010
New York County (212) 686-7500
MS. COURTNEY DUNN LCSW
Social Worker (Clinical)
423 E 23RD ST
NEW YORK, NY 10010
New York County (212) 686-7500
DR. PATRICK COLIN MALLOY M.D.
Radiology (Vascular & Interventional Radiology)
423 E 23RD ST, RADIOLOGY SERVICE
NEW YORK, NY 10010
New York County (212) 686-7500
CARLA ASSENZA LMSW
Social Worker
423 E 23RD ST
NEW YORK, NY 10010
New York County (212) 686-7500
CARA MARY OCHSENREITER LMSW
Social Worker
423 E 23RD ST
NEW YORK, NY 10010
New York County (347) 216-5546

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 Vivian Hayashi's NPI number?

The NPI number for Vivian Hayashi is 1275559403. It was assigned to this individual provider in the NPPES registry on July 14, 2006.

Where is Vivian Hayashi located?

Vivian Hayashi practices at 423 E 23rd St, New York, NY 10010. The listed phone number is (212) 686-7500.

What is Vivian Hayashi's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Vivian Hayashi enrolled in Medicare?

Yes. Vivian Hayashi is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Vivian Hayashi was last updated on March 24, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.