STEPHEN OTTO BERTHELSEN (MD) – Orthopaedic Surgery Physician, NPI 1225046246

STEPHEN OTTO BERTHELSEN (MD) is a healthcare provider. based in Mankato, Minnesota. specializing in Orthopaedic Surgery Physician. They hold the professional credentials MD. They hold a License No. G19287 (CA). The NPI Number for STEPHEN OTTO BERTHELSEN (MD) is 1225046246

Main info

Male
57 Years Of Experience
Accepts Medicare Assignment
Name
STEPHEN OTTO BERTHELSEN (MD)
NPI
1225046246
Phone
(507) 781-8146
Address
1025 Marsh St
Enumeration Date
4 August 2006
Last Update Date
16 November 2023

Doctor Profile

Medical School Name
LOMA LINDA UNIVERSITY SCHOOL OF MEDICINE
Secondary Phone
5072388555
Graduation Year
1969 (57 years ago)
PAC ID
0143314377
Group Practice PAC ID
4981694981
Professional Enrollment ID
I20070919000598

Contacts

Secure Messaging
sberthelsen87583@ehrdirect.mayoclinicmsg.org
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience71
Completeness85
Years active:19State licenses:2Other namesUpdated within 12 months

Provider Addresses for STEPHEN OTTO BERTHELSEN (MD)

  • 1025 Marsh St

    Mankato, MN 560014752

    Phone: (507) 781-8146

    Type: Location

  • The Drive, Norwood, Fairmont, Marion County, West Virginia, 26554, United States

    FAIRMONT, MN 560314575

    Phone: (507) 238-8100

    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.

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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 56001)

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Provider's Procedures

STEPHEN OTTO BERTHELSEN (MD) performs procedures in Orthopaedic Surgery Physician. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
ORTHOPEDIC SURGERYMN20610Aspiration and/or injection of large joint or joint capsule8660

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: 4981694981View full group profile
NameSpecialtyState
-MN
-MN
-MN
Diagnostic RadiologyMN
Advanced Heart Failure And Transplant Cardiology, Cardiovascular Disease (Cardiology)MN
O P T O M E T R YMN
-MO
Family PracticeMN
Cardiovascular Disease (Cardiology)MN
Cardiovascular Disease (Cardiology)WI

Reviews

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Frequently asked questions

Can I use this page to confirm STEPHEN OTTO BERTHELSEN (MD)'s NPI?
Yes. STEPHEN OTTO BERTHELSEN (MD) is listed with NPI 1225046246 in the public NPI dataset.
Can I rely on STEPHEN OTTO BERTHELSEN (MD) being an active provider?
As of the registry snapshot, STEPHEN OTTO BERTHELSEN (MD) is marked active.
What taxonomy line describes STEPHEN OTTO BERTHELSEN (MD)?
For research purposes, treat STEPHEN OTTO BERTHELSEN (MD) as Orthopaedic Surgery Physician in this dataset. Clinical services aligned with this taxonomy classification.
Where is STEPHEN OTTO BERTHELSEN (MD) based?
STEPHEN OTTO BERTHELSEN (MD) is tied to Mankato, Minnesota in the data we show; additional addresses may exist on the full record.
Is specialty guaranteed by NPI alone?
Taxonomy selections describe intent; scope of practice still follows state law.

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