MARK E NIELSON (MD) – Anesthesiology Physician, NPI 1942407838

MARK E NIELSON (MD) is a healthcare provider. based in Indianapolis, Indiana. specializing in ANESTHESIOLOGY, PAIN MANAGEMENT. They hold the professional credentials MD. They hold a License No. 01067783A (IN). The NPI Number for MARK E NIELSON (MD) is 1942407838

Main info

Male
19 Years Of Experience
Accepts Medicare Assignment
Name
MARK E NIELSON (MD)
NPI
1942407838
Phone
Not provided
Address
250 N SHADELAND AVE
Enumeration Date
2 July 2007
Last Update Date
4 December 2024

Doctor Profile

Medical School Name
INDIANA UNIVERSITY SCHOOL OF MEDICINE
Secondary Phone
5743352443
Graduation Year
2007 (19 years ago)
PAC ID
2668658808
Group Practice PAC ID
3678897915
Professional Enrollment ID
I20110524000071
Address ID
IN465451469MI5215XPKWY400

Contacts

Secure Messaging
mnielso1@direct.iuhealth.org
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience65
Completeness85
Years active:18State licenses:1Other namesUpdated within 12 months

1,447 ANESTHESIOLOGY in IN

Provider Addresses for MARK E NIELSON (MD)

  • 250 N SHADELAND AVE

    INDIANAPOLIS, IN 462194959

    Phone:

    Type: Mailing

  • PO BOX 7232

    DEPT 118

    INDIANAPOLIS, IN 462077232

    Phone: (317) 614-9850

    Fax: (317) 614-9655

    Type: Mailing

  • 1701 N Senate Blvd

    Anesthesia Dept

    Indianapolis, IN 462021239

    Phone: (317) 614-9641

    Fax: (317) 614-9655

    Type: Location

  • Senate Boulevard, Meridian Highlands, Indianapolis, Marion, Indiana, 46202, United States

    ANESTHESIA DEPT

    INDIANAPOLIS, IN 462021239

    Phone: (317) 614-9641

    Fax: (317) 614-9655

    Type: Location

  • 2401 W UNIVERSITY AVE

    MUNCIE, IN 473033428

    Phone: (765) 751-2649

    Fax: (765) 281-6671

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 4 Open Payments records for all available years, with a total value of $234.

Total Amount is formed as General ($234) + Research ($0) + Ownership ($0) = $234.

Last reported payment date: 2024-12-19 • Largest payer in this snapshot: SPR Therapeutics, Inc ($185).

Total Amount

$234

General + Research + Ownership

Payments

4

Total payment records

General Amount

$234

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-12-19

Latest reported date

Top Companies

Largest payers in this snapshot

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

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

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2021-06-14

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking 2 Medicare enrollment records; no due dates published yet.

Enrollment records

2

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20110524000071IAnesthesiologyINTBD
I20210614002625IAnesthesiologyTXTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

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.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
96127Assessment of emotional or behavioral problems9036$0
80307Testing for presence of drug, by chemistry analyzers3533$0
99214Established patient office or other outpatient visit, 30-39 minutes2723$0
00731Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope2019$0
99204New patient office or other outpatient visit, 45-59 minutes1515$0
View full utilization report →

Insurance plans in this area (ZIP 46219)

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Provider's Procedures

MARK E NIELSON (MD) performs procedures in ANESTHESIOLOGY. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
ANESTHESIOLOGYIN00142Anesthesia for lens surgery9375
ANESTHESIOLOGYIN36620Insertion of arterial catheter for blood sampling or infusion, accessed through the skin1616

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: 3678897915View full group profile
NameSpecialtyState
A N E S T H E S I O L O G YIL
Certified Registered Nurse Anesthetist (Crna)OH
-CA
Certified Registered Nurse Anesthetist (Crna)MI
-FL
A N E S T H E S I O L O G YCA
A N E S T H E S I O L O G YCA
A N E S T H E S I O L O G YMI
Certified Registered Nurse Anesthetist (Crna)PA
Anesthesiology, Internal MedicineOR

Reviews

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Frequently asked questions

Can I use this page to confirm MARK E NIELSON (MD)'s NPI?
Yes. MARK E NIELSON (MD) is listed with NPI 1942407838 in the public NPI dataset.
Is MARK E NIELSON (MD) listed as active for patients and plans?
The listing shows MARK E NIELSON (MD) as active in the NPI system.
What is MARK E NIELSON (MD) best known for clinically?
Directory data describes MARK E NIELSON (MD) with Anesthesiology Physician. Clinical services aligned with this taxonomy classification.
Where should I expect MARK E NIELSON (MD) on a map?
Expect Indianapolis, Indiana as a primary anchor for MARK E NIELSON (MD) unless the record lists multiple sites.
Is specialty guaranteed by NPI alone?
Taxonomy selections describe intent; scope of practice still follows state law.

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