FREDERICK TIMOTHY GUILFORD
NPI 1548345770
Internal Medicine - Allergy & Immunology in Los Altos, CA

Q: What is Frederick Guilford's NPI number?

The NPI number for Frederick Guilford is 1548345770. It was assigned to this individual provider in the NPPES registry on October 26, 2006.

Q: What is Frederick Guilford's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Allergy & Immunology, with taxonomy code 207RA0201X.

Q: Is Frederick Guilford enrolled in Medicare?

No. Frederick Guilford has opted out of Medicare through September 20, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Active since October 26, 2006Opted out of Medicare · through Sep 20, 2027

5050 EL CAMINO REAL, #110, LOS ALTOS, CA 94022(650) 964-6700(650) 964-3495 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Frederick Timothy Guilford NPPES

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

FREDERICK TIMOTHY GUILFORD (NPI 1548345770) is an individual allergy & immunology provider in Los Altos, California, licensed in California (C38149) and active in the NPI registry since October 2006. He has opted out of Medicare through September 20, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1548345770

Entity TypeIndividualMale

Primary Taxonomy207RA0201X

Provider Legal NameFREDERICK TIMOTHY GUILFORD

Location Address5050 EL CAMINO REAL, #110Los Altos, CA 94022

Mailing Address5050 El Camino Real, #110Los Altos, CA 94022 · (650) 964-6700 · Fax (650) 964-3495

Phone(650) 964-6700

Fax(650) 964-3495

Sole ProprietorNo

Enumeration DateOctober 26, 2006

Last NPPES UpdateJuly 8, 2007

✔ NPI 1548345770 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Allergy & ImmunologyAllopathic & Osteopathic Physicians

Taxonomy Code207RA0201X

License✔ Licensed in CA · C38149

Definition

An internist doctor of osteopathy that specializes in the treatment of allergy and immunologic disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Special Qualifications in the field of Allergy & Immunology.

5050 EL CAMINO REAL, Los Altos, CA 94022

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Other Identifiers 2

Medicare ID-Type Unspecified00C381490

Medicare UPINA36855

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Frederick Timothy Guilford has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from September 20, 2015 through September 20, 2027.

Opt-Out Effective DateSeptember 20, 2015

Opt-Out In Effect ThroughSeptember 20, 2027Opt-out affidavits renew automatically every two years unless cancelled

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94022 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

$156.67 typical visit price

range $70.37 – $206.04

Typical copayment $39.16 (range $17.59 – $51.51)

Most-billed visit code 99204

Established Patient

$86.56 typical visit price

range $23.96 – $169.60

Typical copayment $21.64 (range $5.99 – $42.40)

Most-billed visit code 99213

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 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NICOLE ROY PT

Physical Therapist

5050 EL CAMINO REAL, 210
LOS ALTOS, CA 94022

Santa Clara County (650) 559-0011

NATURALSTART NATUROPATHIC FAMILY MEDICINE, INC.

Naturopath

5050 EL CAMINO REAL, STE 110
LOS ALTOS, CA 94022

Santa Clara County (650) 964-6700

MR. JASON MA WONG MPT

Physical Therapist

5050 EL CAMINO REAL, SUITE 210
LOS ALTOS, CA 94022

Santa Clara County (650) 559-0011

PAM HANDLEY PT

Physical Therapist

5050 EL CAMINO REAL, SUITE 210
LOS ALTOS, CA 94022

Santa Clara County (650) 559-0011

HILLARY ANNE FRENCH PSY.D.

Psychologist (Clinical)

5050 EL CAMINO REAL, SUITE 101
LOS ALTOS, CA 94022

Santa Clara County (650) 937-1111

RAJAN PRAVIN PATEL MD

Family Medicine

5050 EL CAMINO REAL, #110
LOS ALTOS, CA 94022

Santa Clara County (650) 964-6700

JANEEN E. WALLACE PT, DPT

Physical Therapist

5050 EL CAMINO REAL, SUITE 210
LOS ALTOS, CA 94022

Santa Clara County (650) 559-0011

DR. DEBORA LYNN BURGARD PH.D.

Psychologist

5050 EL CAMINO REAL, SUITE 202
LOS ALTOS, CA 94022

Santa Clara County (650) 321-2606

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 Frederick Guilford's NPI number?

The NPI number for Frederick Guilford is 1548345770. It was assigned to this individual provider in the NPPES registry on October 26, 2006.

Where is Frederick Guilford located?

Frederick Guilford practices at 5050 El Camino Real #110, Los Altos, CA 94022. The listed phone number is (650) 964-6700.

What is Frederick Guilford's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Allergy & Immunology, with taxonomy code 207RA0201X.

Is Frederick Guilford enrolled in Medicare?

No. Frederick Guilford has opted out of Medicare through September 20, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Frederick Guilford was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.