MR. DAVID ROY DEMASK (CRNA) – Certified Registered Nurse Anesthetist, NPI 1275678468

Certified Registered Nurse Anesthetist

MR. DAVID ROY DEMASK (CRNA) is a healthcare provider. based in La crosse, Wisconsin. specializing in Certified Registered Nurse Anesthetist. They hold the professional credentials CRNA. They hold a License No. 264 (WI). The NPI Number for MR. DAVID ROY DEMASK (CRNA) is 1275678468

Main info

Male

41 Years Of Experience

Accepts Medicare Assignment

Name

MR. DAVID ROY DEMASK (CRNA)

NPI

1275678468

Phone

(608) 785-0940

Address

700 West Avenue South

Enumeration Date

21 February 2007

Last Update Date

14 January 2021

Doctor Profile

Medical School Name

OTHER

Secondary Phone

6083722181

Graduation Year

1985 (41 years ago)

PAC ID

7416080320

Group Practice PAC ID

6901897016

Professional Enrollment ID

I20110303000516

Contacts

Secure Messaging

ddemask10403@direct.monroeclinic.org

Data current as of

19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology

Experience62

Completeness85

Years active:19State licenses:1Other namesUpdated within 12 months

Provider Addresses for MR. DAVID ROY DEMASK (CRNA)

700 West Avenue South
La Crosse, WI 546014783
Phone: (608) 785-0940
Fax: (608) 392-9898
Type: Location
700 WEST AVENUE SOUTH
ATTN: PHYSICIAN SERVICES DEPT.
LA CROSSE, WI 546014783
Phone: (608) 785-0940
Fax: (608) 392-9898
Type: Mailing
501 GOPHER DR
TOMAH, WI 546604513
Phone: (083) 722-1816
Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

Loading prescription activity...

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 54601)

Loading plans...

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: 6901897016View full group profile

Name	Specialty	State
DANIEL E TVEDTEN (M.D.)	-	WI
MR. MARK ALAN AUGUSTYN (MD)	-	WI
DR. KARL EDWIN STIEN (M.D.)	Diagnostic Radiology	WI
KARYN CECELE (M.D.)	Family Practice	WI
MARY MACKENZIE LANE-PEOT (DNP)	Nurse Practitioner	WI
DR. MICHAEL PATRICK SYTSMA (DO)	-	WI
ANDREW LAST (MD)	Family Practice	MN
KAREN ELIZABETH SMITH (NP)	Nurse Practitioner	WI
DR. GRZEGORZ T GURDA (MD, PHD)	P A T H O L O G Y	WI
DR. CRAIG A HABERMAN (DO)	-	WI

Reviews

All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.

No reviews yet. Be the first to share your experience — your opinion helps families compare providers.

Frequently asked questions

What NPI should I save for MR. DAVID ROY DEMASK (CRNA)?

Save NPI 1275678468 if you need a stable reference for MR. DAVID ROY DEMASK (CRNA).

Is MR. DAVID ROY DEMASK (CRNA)'s NPI currently valid?

The extract we use shows MR. DAVID ROY DEMASK (CRNA) as active.

Can you summarize MR. DAVID ROY DEMASK (CRNA)'s specialty in plain language?

Clinically, the directory lists MR. DAVID ROY DEMASK (CRNA) with Certified Registered Nurse Anesthetist. Clinical services aligned with this taxonomy classification.

Where does public data place MR. DAVID ROY DEMASK (CRNA)?

The snapshot lists La Crosse, Wisconsin for MR. DAVID ROY DEMASK (CRNA); download NPPES for the complete set.

What if La Crosse, Wisconsin seems incomplete?

Street-level detail can be omitted — open the full address list for this NPI.