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VASANTHI L NARAYAN M.D.
NPI 1598939589
Internal Medicine - Endocrinology, Diabetes & Metabolism in Irvine, CA

Active since April 21, 2008PECOS EnrolledAccepts Medicare Assignment
6670 ALTON PKWY, ALTON SAND CANYON MEDICAL OFFICES - MOB2, 3RD FLOOR, IRVINE, CA 92618(888) 988-2800 Get Directions Write a Review

NPPES record last updated: November 22, 2021. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Vasanthi L Narayan M.d. NPPES

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

VASANTHI L NARAYAN M.D. (NPI 1598939589) is an individual endocrinology, diabetes & metabolism provider in Irvine, California, licensed in California (93293) and active in the NPI registry since April 2008. She is enrolled in Medicare PECOS and is a graduate of Yale University School Of Medicine (2002).

NPPES Registry Identity

NPI1598939589
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameVASANTHI L NARAYANCredential: M.D.
Location Address6670 ALTON PKWY, ALTON SAND CANYON MEDICAL OFFICES - MOB2, 3RD FLOORIrvine, CA 92618-3734
Mailing Address4178 SpectrumIrvine, CA 92618-3378
Phone(888) 988-2800
Sole ProprietorNo
Medical School CMSYale University School Of MedicineGraduated 2002
Enumeration DateApril 21, 2008
Last NPPES UpdateNovember 22, 2021
✔ NPI 1598939589 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · 93293
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
6670 ALTON PKWY, Irvine, CA 92618
Open in Google Maps ↗

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

Vasanthi L Narayan 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.

PECOS PAC ID8426073446
PECOS Enrollment IDI20060217000678
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.

Medicare Billing Reassignment

Medicare enrollment records show Vasanthi Narayan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group
14 mi
Health Maintenance Organization
441 N LAKEVIEW AVE
Anaheim, CA 92807
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1952333460 (714) 279-4000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92618 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

KAISER PERMANENTE
Health Maintenance Organization
6670 ALTON PKWY, ANESTHESIOLOGY DEPARTMENT 2ND FLOOR
IRVINE, CA 92618
Orange County (832) 368-1976
BEATRIZ SIMONS PA
Physician Assistant (Surgical)
6670 ALTON PKWY
IRVINE, CA 92618
Orange County (949) 932-5105
MRS. THUY DUONG TRUONG LE PHARM.D.
Pharmacist
6670 ALTON PKWY
IRVINE, CA 92618
Orange County (949) 932-5090
DR. GEORGE YUEN M.D.
Internal Medicine (Pulmonary Disease)
6670 ALTON PKWY
IRVINE, CA 92618
Orange County (888) 988-2800
TIFFANIE THY DO M.D.
Internal Medicine (Hematology & Oncology)
6670 ALTON PKWY
IRVINE, CA 92618
Orange County (833) 574-2273
CLAIRE LOURDES A GERONA
Physical Therapist
6670 ALTON PKWY
IRVINE, CA 92618
Orange County (833) 574-2273
DR. ALI M SOLTANI M.D.
Surgery (Plastic and Reconstructive Surgery)
6670 ALTON PKWY, MEDICAL OFFICE BUILDING 1
IRVINE, CA 92618
Orange County (949) 932-5938
ROBERT EVAN TUCHLER MD
Plastic Surgery
6670 ALTON PKWY, SAND CANYON MEDICAL OFFICE, SUITE 4110
IRVINE, CA 92618
Orange County (949) 932-5126

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 Vasanthi Narayan's NPI number?

The NPI number for Vasanthi Narayan is 1598939589. It was assigned to this individual provider in the NPPES registry on April 21, 2008.

Where is Vasanthi Narayan located?

Vasanthi Narayan practices at 6670 Alton Pkwy Alton Sand Canyon Medical Offices - Mob2, 3rd Floor, Irvine, CA 92618. The listed phone number is (888) 988-2800.

What is Vasanthi Narayan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Vasanthi Narayan enrolled in Medicare?

Yes. Vasanthi Narayan 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 Vasanthi Narayan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Vasanthi Narayan reassigns Medicare benefits to Southern California Permanente Medical Group (Anaheim, CA). 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 Vasanthi Narayan'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 Vasanthi Narayan was last updated on November 22, 2021. 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.