Dr. Alexander Lee Werne , MD
Pediatrics β’ Mountain View, CA
701 E El Camino Real
Mountain View, CA 940402833
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
701 E El Camino Real
Mountain View, CA 940402833
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 2 distinct additional practice-address records in Palo Alto, CA; San Francisco, CA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Pediatrics: NPPES taxonomy is a reported classification, not proof of board certification.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019β2025.
NPI first issued
2017
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Werne has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Werne as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Mountain View and California
54 active clinicians are listed under Pediatrics with a practice address in Mountain View, CA (9,320 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Mountain View
0% of these 54 clinicians have the CMS telehealth indicator.
3.7% of these 54 clinicians are listed by CMS as accepting Medicare assignment.
Sources: CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-06-06NUCC Taxonomy Code: 208000000X
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PEDIATRIC MEDICINE
I20200618000592
CA
2466787965
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
1101 Van Ness Ave
San Francisco, CA 941096919
Phone: 4156002722
725 Welch Rd
Palo Alto, CA 943041601
Phone: 6504978000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Anesthesiology
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
AGPCNPBC
Dermatology - MOHS-Micrographic Surgery
Doctor of Medicine (M.D.)
Radiology - Diagnostic Radiology
Doctor of Medicine (M.D.)
Dermatology
Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)
Nurse Practitioner - Primary Care
Nurse Practitioner
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at PO BOX 276950, SACRAMENTO, CA 958276950 (Tel: 6509347850)
Additional practice office at 1101 Van Ness Ave, San Francisco, CA 941096919
Additional practice office at 725 Welch Rd, Palo Alto, CA 943041601
Registered at 725 WELCH RD, PALO ALTO, CA 943041601 (Tel: 6504978000)
Registered at 701 E EL CAMINO REAL, MOUNTAIN VIEW, CA 940402833 (Tel: 6509347850)
Registered at 325 DISTEL CIR, LOS ALTOS, CA 940221408
Registered at 1101 VAN NESS AVE, SAN FRANCISCO, CA 941096919 (Tel: 4156002722)
Registered at 1101 VAN NESS AVE, SAN FRANCISCO, CA 941096919 (Tel: 6506002722)
Recorded as ALEXANDER WERNE, MD
Pediatrics (license number reported to NPPES: CA A160064)
NPI status registered as active in NPPES database
Registered at 550 16TH ST, BOX 0110, SAN FRANCISCO, CA 941432549 (Tel: 4154769181)
Registered at 39 IRON WORKS LN, HOLLIS, NH 030496447 (Tel: 6033211334)
Recorded as ALEXANDER WERNE
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
Po Box 276950
Sacramento, CA 958276950
Phone: 6509347850