GEORGE FREDERICK SIEFFERT (MD) – Vascular Surgery Physician, NPI 1598753725

GEORGE FREDERICK SIEFFERT (MD) is a healthcare provider. based in Reno, Nevada. specializing in Vascular Surgery Physician. They hold the professional credentials MD. They hold a License No. 5079 (NV). The NPI Number for GEORGE FREDERICK SIEFFERT (MD) is 1598753725

Main info

Male
51 Years Of Experience
Accepts Medicare Assignment
Name
GEORGE FREDERICK SIEFFERT (MD)
NPI
1598753725
Phone
(775) 789-7000
Address
1500 E 2ND ST
Enumeration Date
11 October 2005
Last Update Date
4 November 2011

Doctor Profile

Medical School Name
UNIVERSITY OF ARIZONA COLLEGE OF MEDICINE
Secondary Phone
7757897050
Graduation Year
1975 (51 years ago)
PAC ID
4082730015
Group Practice PAC ID
6103102041
Professional Enrollment ID
I20101015000749
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience59
Completeness75
Years active:20State licenses:1Digital endpointsOther names

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Provider Addresses for GEORGE FREDERICK SIEFFERT (MD)

  • 1500, East 2nd Street, Reno, Washoe County, Nevada, 89502, United States

    SUITE 206

    RENO, NV 895021181

    Phone: (775) 789-7000

    Fax: (775) 789-7040

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 89502)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 6103102041View full group profile
NameSpecialtyState
PAUL MARTIN STUMPF (MD)
-NV

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Frequently asked questions

Can I use this page to confirm GEORGE FREDERICK SIEFFERT (MD)'s NPI?
Yes. GEORGE FREDERICK SIEFFERT (MD) is listed with NPI 1598753725 in the public NPI dataset.
Is GEORGE FREDERICK SIEFFERT (MD) still practicing?
GEORGE FREDERICK SIEFFERT (MD) is currently listed as active in the public NPI registry.
What is GEORGE FREDERICK SIEFFERT (MD) best known for clinically?
Directory data describes GEORGE FREDERICK SIEFFERT (MD) with Vascular Surgery Physician. Clinical services aligned with this taxonomy classification.
Does GEORGE FREDERICK SIEFFERT (MD) list a practice location?
Patients near Reno, Nevada may find GEORGE FREDERICK SIEFFERT (MD) in results; validate coverage separately.
Why does GEORGE FREDERICK SIEFFERT (MD) have multiple addresses?
2 practice locations appear in the available data. Multiple addresses are common for hospital privileges, telehealth, or multi-site groups.

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