PRESTON R SIMPSON (MD) – Clinical Pathology/Laboratory Medicine Physician, NPI 1265453021

PRESTON R SIMPSON (MD) is a healthcare provider. based in Fresno, California. specializing in Clinical Pathology/Laboratory Medicine Physician. They hold the professional credentials MD. They hold a License No. G58006 (CA). The NPI Number for PRESTON R SIMPSON (MD) is 1265453021

Main info

Male
47 Years Of Experience
Accepts Medicare Assignment
Name
PRESTON R SIMPSON (MD)
NPI
1265453021
Phone
(559) 449-5360
Address
1303 E HERNDON AVE
Enumeration Date
21 July 2006
Last Update Date
29 May 2008

Doctor Profile

Medical School Name
VANDERBILT UNIVERSITY SCHOOL OF MEDICINE
Secondary Phone
4098927171
Graduation Year
1979 (47 years ago)
PAC ID
1951407246
Group Practice PAC ID
1850392150
Professional Enrollment ID
I20100819000473
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience52
Completeness75
Years active:19State licenses:1Digital endpointsOther names

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Provider Addresses for PRESTON R SIMPSON (MD)

  • Saint Agnes Medical Center, 1303, East Herndon Avenue, Fresno, Fresno County, California, 93720, United States

    FRESNO, CA 93720

    Phone: (559) 449-5360

    Fax: (559) 449-3347

    Type: Location

  • PO BOX 26750

    FRESNO, CA 937296750

    Phone: (559) 455-4000

    Fax: (559) 455-4007

    Type: Mailing

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.

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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 93720)

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Provider's Procedures

PRESTON R SIMPSON (MD) performs procedures in Clinical Pathology/Laboratory Medicine Physician. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
PATHOLOGYCA88307Pathology examination of tissue using a microscope, moderately high complexity9875
PATHOLOGYCA88312Special stained specimen slides to identify organisms including interpretation and report172158
PATHOLOGYCA88342Tissue or cell analysis by immunologic technique4947

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: 1850392150View full group profile
NameSpecialtyState
P A T H O L O G YTX
P A T H O L O G YTX
P A T H O L O G YTX

Reviews

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Frequently asked questions

Is PRESTON R SIMPSON (MD) listed with a National Provider Identifier?
Yes — PRESTON R SIMPSON (MD) has NPI 1265453021 on file in the registry.
Is there an active status for PRESTON R SIMPSON (MD)?
For scheduling context, PRESTON R SIMPSON (MD) is shown as active in the registry.
What area of care is associated with PRESTON R SIMPSON (MD)?
PRESTON R SIMPSON (MD)'s record emphasizes Clinical Pathology/Laboratory Medicine Physician. Clinical services aligned with this taxonomy classification.
What practice footprint exists for PRESTON R SIMPSON (MD)?
Travel planning: use Fresno, California as the reference point for PRESTON R SIMPSON (MD), then confirm.
Can I trust this NPI listing for PRESTON R SIMPSON (MD)?
The listing is sourced from the national NPI registry. If something looks off, compare with NPPES and the clinic's website.

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