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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. ILONA FRIEDEN MD
NPI 1396703435
Pediatrics in San Francisco, CA

Active since May 01, 2006PECOS Enrolled
74.46/100
CMS Quality Rating
1701 DIVISADERO ST, SAN FRANCISCO, CA 94143(415) 353-7800(415) 353-7870 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

About Dr. Ilona Frieden Md NPPES

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

DR. ILONA FRIEDEN MD (NPI 1396703435) is an individual pediatrics provider in San Francisco, California, licensed in California (G38622) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (1977).

NPPES Registry Identity

NPI1396703435
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. ILONA FRIEDENCredential: MD
Location Address1701 DIVISADERO STSan Francisco, CA 94143-0001
Mailing Address1635 Divisadero St, Ste 625, Box 1821San Francisco, CA 94143-0001 · (415) 476-4029 · Fax (415) 476-4150
Phone(415) 353-7800
Fax(415) 353-7870
Sole ProprietorNo
Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 1977
Enumeration DateMay 1, 2006
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1396703435 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · G38622
Definition
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.
Also ListedDermatologyTaxonomy 207N00000X · License G38622 (CA)
1701 DIVISADERO ST, San Francisco, CA 94143
Open in Google Maps ↗

Other Identifiers 1

Medicaid00G386220CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ilona Frieden Md 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 ID4981789625
PECOS Enrollment IDI20080305000630
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 94143 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

74.46/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability76
Improvement Activities40
Cost46.68

Other Providers at the Same Location NPPES 19

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

DR. CHRISTINE DOROTHY ZAMPACH D.P.T.
Specialist
1701 DIVISADERO ST, BOX 0625
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7598
UCSF MEDICAL GROUP BUSINESS SERVICES
Internal Medicine
1701 DIVISADERO ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7720
SIMONE MADAN PHD
Psychologist (Clinical)
1701 DIVISADERO ST, 5TH FLOOR
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7300
DR. LEAH S KARLINER MD
Internal Medicine
1701 DIVISADERO ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7300
JENNI R. JESPERSEN MA, ATC
Specialist/Technologist (Athletic Trainer)
1701 DIVISADERO ST, SUITE 420
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7966
DR. SUDHA PRATHIKANTI MD
Psychiatry & Neurology (Psychiatry)
1701 DIVISADERO ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7796
BARBARA NEWLIN RN, ANP
Nurse Practitioner (Adult Health)
1701 DIVISADERO ST, STE 559, 1732
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7983
DR. ERIN FORD-DIRKS MATHES ERIN MATHES
Dermatology
1701 DIVISADERO ST, 3RD FLOOR
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7800

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 Ilona Frieden's NPI number?

The NPI number for Ilona Frieden is 1396703435. It was assigned to this individual provider in the NPPES registry on May 1, 2006.

Where is Ilona Frieden located?

Ilona Frieden practices at 1701 Divisadero St, San Francisco, CA 94143. The listed phone number is (415) 353-7800.

What is Ilona Frieden's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Ilona Frieden enrolled in Medicare?

Yes. Ilona Frieden 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.

When was this NPI record last updated?

The NPPES record for Ilona Frieden was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days 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.