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ALAN MICHAEL IWAHASHI
NPI 1356845044
Anesthesiology in Mountain View, CA

Active since March 19, 2018PECOS Enrolled
2500 GRANT RD, MOUNTAIN VIEW, CA 94040(650) 940-7000 Get Directions Write a Review

NPPES record last updated: July 30, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 30, 2026, Jul 12, 2025, Jul 2, 2021 and 1 more (4 updates tracked since 2018).

About Alan Michael Iwahashi NPPES

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

ALAN MICHAEL IWAHASHI (NPI 1356845044) is an individual anesthesiology provider in Mountain View, California, licensed in California (A165936) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1356845044
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameALAN MICHAEL IWAHASHI
Location Address2500 GRANT RDMountain View, CA 94040-4302
Mailing Address1070 Autumn LnLos Altos, CA 94024-6035
Phone(650) 940-7000
Sole ProprietorNo
Enumeration DateMarch 19, 2018
Last NPPES UpdateJuly 30, 20264 updates tracked since enumeration
NPPES CertifiedJuly 30, 2026
✔ NPI 1356845044 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · A165936
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
2500 GRANT RD, Mountain View, CA 94040
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alan Michael Iwahashi 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.

Medicare Billing Reassignment

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

El Camino Anesthesia
9.7 mi
Anesthesiology
815 POLLARD RD
Los Gatos, CA 95032
  • Reassigned Medicare billing, California enrollment
  • 84 clinicians in this Medicare group
NPI 1356910053 (408) 378-6131

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

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.

BARBARA MOCNIK APRN
Registered Nurse (Psychiatric/Mental Health, Adult)
2500 GRANT RD
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 940-7187
DR. JONATHAN TODD ENGELHARDT MD
Emergency Medicine
2500 GRANT RD
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 940-7000
DR. SHAWN MATHEW JACOB MD
Internal Medicine
2500 GRANT RD
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 940-7000
NADIA KIRMANI
Student in an Organized Health Care Education/Training Program
2500 GRANT RD
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 940-7000
KELLEY DAVIS MS, RD
Dietitian, Registered
2500 GRANT RD, LPCH-4C
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 988-4111
TROY THOAI LAM MD
Internal Medicine
2500 GRANT RD
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 374-0001
MAX LEE
Student in an Organized Health Care Education/Training Program
2500 GRANT RD
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 940-7000
MS. TOVAH SHOSHANA KROKOSZYNSKI PSYD
Counselor (Mental Health)
2500 GRANT RD
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 988-3255

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 Alan Iwahashi's NPI number?

The NPI number for Alan Iwahashi is 1356845044. It was assigned to this individual provider in the NPPES registry on March 19, 2018.

Where is Alan Iwahashi located?

Alan Iwahashi practices at 2500 Grant Rd, Mountain View, CA 94040. The listed phone number is (650) 940-7000.

What is Alan Iwahashi's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Alan Iwahashi enrolled in Medicare?

Yes. Alan Iwahashi is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Alan Iwahashi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alan Iwahashi reassigns Medicare benefits to El Camino Anesthesia (Los Gatos, 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 Alan Iwahashi'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 Alan Iwahashi was last updated on July 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.