KAREN TRIANDAFYLLIS NP
NPI 1659599983
Nurse Practitioner - Psychiatric/Mental Health in San Francisco, CA

Q: What is Karen Triandafyllis's NPI number?

The NPI number for Karen Triandafyllis is 1659599983. It was assigned to this individual provider in the NPPES registry on April 23, 2007.

Q: What is Karen Triandafyllis's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Active since April 23, 2007PECOS Enrolled

995 POTRERO AVE, WARD 93, SAN FRANCISCO GENERAL HOSPITAL, OTOP, SAN FRANCISCO, CA 94110(628) 206-6522(628) 206-4153 Get Directions Write a Review

NPPES record last updated: October 9, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 9, 2025, Sep 17, 2025 (2 updates tracked since 2025).

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About Karen Triandafyllis Np NPPES

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

KAREN TRIANDAFYLLIS NP (NPI 1659599983) is an individual psychiatric/mental health provider in San Francisco, California, licensed in California (NP 18093) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1659599983

Entity TypeIndividualFemale

Primary Taxonomy363LP0808X

Provider Legal NameKAREN TRIANDAFYLLISCredential: NP

Location Address995 POTRERO AVE, WARD 93, SAN FRANCISCO GENERAL HOSPITAL, OTOPSan Francisco, CA 94110

Mailing Address995 Potrero Ave, Ward 93, San Francisco General Hospital, OtopSan Francisco, CA 94110 · (628) 206-6522 · Fax (628) 206-4153

Phone(628) 206-6522

Fax(628) 206-4153

Sole ProprietorNo

Enumeration DateApril 23, 2007

Last NPPES UpdateOctober 9, 20252 updates tracked since enumeration

NPPES CertifiedOctober 9, 2025

✔ NPI 1659599983 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LP0808X

Licenses✔ Licensed in CA · NP 18093✔ Licensed in NY · 401013

995 POTRERO AVE, WARD 93, San Francisco, CA 94110

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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)

Karen Triandafyllis Np 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 Karen Triandafyllis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

City & County Of San Francisco

0.1 mi

General Acute Care Hospital

1001 POTRERO AVE, BUILDING 5, WARD 1B
San Francisco, CA 94110

Reassigned Medicare billing, California enrollment
1,573 clinicians in this Medicare group

NPI 1083648810 (415) 759-4067

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 94110 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.

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 Karen Triandafyllis's NPI number?

The NPI number for Karen Triandafyllis is 1659599983. It was assigned to this individual provider in the NPPES registry on April 23, 2007.

Where is Karen Triandafyllis located?

Karen Triandafyllis practices at 995 Potrero Ave, Ward 93 San Francisco General Hospital, Otop, San Francisco, CA 94110. The listed phone number is (628) 206-6522.

What is Karen Triandafyllis's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Karen Triandafyllis enrolled in Medicare?

Yes. Karen Triandafyllis is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Karen Triandafyllis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karen Triandafyllis reassigns Medicare benefits to City & County Of San Francisco (San Francisco, 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 Karen Triandafyllis'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 Karen Triandafyllis was last updated on October 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.