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

HELENE PUZIO DO
NPI 1235758970
Internal Medicine - Endocrinology, Diabetes & Metabolism in San Francisco, CA

Active since April 13, 2020PECOS Enrolled
400 PARNASSUS AVE, SAN FRANCISCO, CA 94143(415) 353-2350 Get Directions Write a Review

NPPES record last updated: October 16, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 16, 2026, Aug 3, 2026, Aug 8, 2024 and 2 more (5 updates tracked since 2020).

About Helene Puzio Do NPPES

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

HELENE PUZIO DO (NPI 1235758970) is an individual endocrinology, diabetes & metabolism provider in San Francisco, California, licensed in California (20A22733) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1235758970
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameHELENE PUZIOCredential: DO
Location Address400 PARNASSUS AVESan Francisco, CA 94143-2202
Mailing Address300 Pasteur Dr Rm S025Stanford, CA 94305-2200
Sole ProprietorNo
Enumeration DateApril 13, 2020
Last NPPES UpdateOctober 16, 20265 updates tracked since enumeration
NPPES CertifiedOctober 16, 2026
✔ NPI 1235758970 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · 20A22733
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
Also ListedInternal MedicineTaxonomy 207R00000X · License 34.016370 (OH), 20A22733 (CA)
400 PARNASSUS AVE, San Francisco, CA 94143

Secondary Practice Locations 2

Location 1300 Pasteur Dr Rm S025Stanford, CA 94305-2200 · Phone (650) 723-2300
Location 2995 Potrero Ave., Bldg. 90, Ward 92San Francisco, CA 94110-3518 · Phone (628) 206-4777 · Fax (628) 206-7503

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Helene Puzio Do 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 Reassignments

3

Medicare enrollment records show Helene Puzio reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
Endocrinology, Diabetes & Metabolism
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 2,112 clinicians in this Medicare group

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 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
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.

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.

Ophthalmology
400 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Surgery (Surgical Critical Care)
400 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Otolaryngology (Pediatric Otolaryngology)
400 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Physician Assistant
400 PARNASSUS AVE, 3RD FLOOR, SUITE 311
SAN FRANCISCO, CA 94143
Physical Therapist
400 PARNASSUS AVE, A-68
SAN FRANCISCO, CA 94143
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)
400 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Orthopaedic Surgery
400 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Surgery
400 PARNASSUS AVE
SAN FRANCISCO, CA 94143

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 Helene Puzio's NPI number?

The NPI number for Helene Puzio is 1235758970. It was assigned to this individual provider in the NPPES registry on April 13, 2020.

Where is Helene Puzio located?

Helene Puzio practices at 400 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 353-2350.

What is Helene Puzio's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Helene Puzio enrolled in Medicare?

Yes. Helene Puzio is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Helene Puzio's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Helene Puzio reassigns Medicare benefits to 3 organizations: University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and Regents Of The University Of California (San Francisco, CA). Each 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 Helene Puzio's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Helene Puzio accept?

Health plans from Anthem Blue Cross and Blue Shield list Helene Puzio as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Helene Puzio was last updated on October 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.