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DEAN DELMASTRO MD
NPI 1699875922
Internal Medicine in Eau Claire, WI

Active since September 25, 2006PECOS EnrolledAccepts Medicare Assignment
82.79/100
CMS Quality Rating
900 W CLAIREMONT AVE, EAU CLAIRE, WI 54701(715) 839-3956 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dean Delmastro Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DEAN DELMASTRO MD (NPI 1699875922) is an individual internal medicine provider in Eau Claire, Wisconsin, licensed in Wisconsin (37184) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Marshfield Medical Center - Rice Lake, and is a graduate of Rush Medical College Of Rush University (1988).

NPPES Registry Identity

NPI1699875922
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDEAN DELMASTROCredential: MD
Location Address900 W CLAIREMONT AVEEau Claire, WI 54701
Mailing Address1000 N Oak AveMarshfield, WI 54449-5777
Phone(715) 839-3956
Sole ProprietorNo
Medical School CMSRush Medical College Of Rush UniversityGraduated 1988
Enumeration DateSeptember 25, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1699875922 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in WI · 37184
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedInternal Medicine · Hematology & OncologyTaxonomy 207RH0003X · License 37184 (WI)

Other Identifiers 1

Medicaid32169800WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, HealthPartners, Sanford Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dean Delmastro Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5597771055
PECOS Enrollment IDI20060221000906
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Dean Delmastro reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Lakeview Medical Center Inc Of Rice Lake
Clinic/Center
1700 W STOUT ST
Rice Lake, WI 54868
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,616 clinicians in this Medicare group
NPI 1093201832 (715) 236-6133
Marshfield Clinic Inc
Clinic/Center
1000 N OAK AVE
Marshfield, WI 54449
  • Reassigned Medicare billing, Wisconsin enrollment
  • 2,540 clinicians in this Medicare group
NPI 1952347981 (715) 387-5511
Mchs Hospitals Inc
Clinic/Center
1000 N OAK AVE
Marshfield, WI 54449
  • Reassigned Medicare billing, Wisconsin enrollment
  • Also billed through NPI 1952890873 (Wisconsin)
  • 2,476 clinicians in this Medicare group
NPI 1093221434 (715) 387-5511

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
376 services116 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
85 services70 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
31 services12 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
14 services13 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Marshfield Medical Center - Rice Lake

Acute Care Hospitals · Rice Lake, WI
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520011
Location1700 West Stout StreetRice Lake, WI 54868 · Barron County
Emergency services Birthing friendly

Marshfield Medical Center

Acute Care Hospitals · Marshfield, WI
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number520037
Location611 St Joseph AveMarshfield, WI 54449 · Wood County
Emergency services Birthing friendly

Marshfield Medical Center - Eau Claire

Acute Care Hospitals · Eau Claire, WI
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520210
Location2310 Craig RdEau Claire, WI 54701 · Eau Claire County
Emergency services Birthing friendly

Aspirus Stanley Hospital

Critical Access Hospitals · Stanley, WI
OwnershipVoluntary non-profit - Private
CMS Certification Number521311
Location1120 Pine StStanley, WI 54768 · Chippewa County
Emergency services

Marshfield Medical Center - Ladysmith

Critical Access Hospitals · Ladysmith, WI
OwnershipGovernment - Hospital District or Authority
CMS Certification Number521328
Location1200 Port Arthur RdLadysmith, WI 54848 · Rusk County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54701 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$123.69 typical visit price
range $53.90 – $163.24
Typical copayment $30.92 (range $13.47 – $40.81)
Most-billed visit code 99204
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

82.79/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality68.98
Promoting Interoperability99
Improvement Activities40
Cost66.19

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
3 suppliers15 claims15 services$99.83 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EDWARD S PISARCIK JR. PA-C
Physician Assistant
900 W CLAIREMONT AVE
EAU CLAIRE, WI 54701
Eau Claire County (414) 290-6720
MICHELE SUZANNE ELKIN AU.D.
Audiologist
900 W CLAIREMONT AVE
EAU CLAIRE, WI 54701
Eau Claire County (715) 717-4121
CHRISTINE STONE OTR/L
Occupational Therapist
900 W CLAIREMONT AVE
EAU CLAIRE, WI 54701
Eau Claire County (715) 717-4121
MARSHFIELD CLINIC, INC.
Durable Medical Equipment & Medical Supplies
900 W CLAIREMONT AVE
EAU CLAIRE, WI 54701
Eau Claire County (715) 839-3956
CHERYL M COLBENSON D.O.
Emergency Medicine
900 W CLAIREMONT AVE
EAU CLAIRE, WI 54701
Eau Claire County (715) 717-4121
MIECHIA ASHAWN ESCO M.D.,PHD
Surgery
900 W CLAIREMONT AVE
EAU CLAIRE, WI 54701
Eau Claire County (715) 717-4121
HEATHER GOFF PA
Physician Assistant
900 W CLAIREMONT AVE
EAU CLAIRE, WI 54701
Eau Claire County (715) 717-4121
TERESA OLSON MS, CCC-SLP
Speech-Language Pathologist
900 W CLAIREMONT AVE
EAU CLAIRE, WI 54701
Eau Claire County (715) 717-4414

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Dean Delmastro's NPI number?

The NPI number for Dean Delmastro is 1699875922. It was assigned to this individual provider in the NPPES registry on September 25, 2006.

Where is Dean Delmastro located?

Dean Delmastro practices at 900 W Clairemont Ave, Eau Claire, WI 54701. The listed phone number is (715) 839-3956.

What is Dean Delmastro's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Dean Delmastro enrolled in Medicare?

Yes. Dean Delmastro is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Dean Delmastro's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Dean Delmastro reassigns Medicare benefits to 3 organizations: Lakeview Medical Center Inc Of Rice Lake (Rice Lake, WI), Marshfield Clinic Inc (Marshfield, WI) and Mchs Hospitals Inc (Marshfield, WI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Dean Delmastro's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Dean Delmastro accept?

Health plans from Anthem Blue Cross and Blue Shield, HealthPartners, Sanford Health Plan and Security Health Plan list Dean Delmastro as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Dean Delmastro affiliated with any hospitals?

According to CMS data, Dean Delmastro is affiliated with Marshfield Medical Center - Rice Lake, Marshfield Medical Center, Marshfield Medical Center - Eau Claire, Aspirus Stanley Hospital and Marshfield Medical Center - Ladysmith.

When was this NPI record last updated?

The NPPES record for Dean Delmastro was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.