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MR. MARK W WALTER M.D
NPI 1205910643
Psychiatry & Neurology - Psychiatry in Dubuque, IA

Active since October 24, 2006PECOS Enrolled
100/100
CMS Quality Rating
1690 ELM ST STE 300, DUBUQUE, IA 52001(563) 690-2850(563) 582-5335 Get Directions Write a Review

NPPES record last updated: January 23, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 7, 2023, Oct 18, 2023, Oct 14, 2020 and 1 more (4 updates tracked since 2018).

About Mr. Mark W Walter M.d NPPES

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

MR. MARK W WALTER M.D (NPI 1205910643) is an individual psychiatry provider in Dubuque, Iowa, licensed in Wyoming (7585A) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Mille Lacs Health System, and maintains a secondary practice location in Gillette.

NPPES Registry Identity

NPI1205910643
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameMR. MARK W WALTERCredential: M.D
Location Address1690 ELM ST STE 300Dubuque, IA 52001-3679
Mailing AddressPo Box 3011Gillette, WY 82717-3011 · (307) 688-5000 · Fax (307) 688-5074
Phone(563) 690-2850
Fax(563) 582-5335
Sole ProprietorNo
Medical School CMSWake Forest University School Of MedicineGraduated 2002
Enumeration DateOctober 24, 2006
Last NPPES UpdateJanuary 23, 20254 updates tracked since enumeration
NPPES CertifiedJanuary 23, 2025
✔ NPI 1205910643 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Licenses✔ Licensed in WY · 7585A✔ Licensed in IA · MD-48932✔ Licensed in MN · 72459
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
1690 ELM ST STE 300, Dubuque, IA 52001
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Secondary Practice Location 1

Location 1501 S Burma AveGillette, WY 82716-3426 · Phone (307) 688-5000 · Fax (307) 688-5074

Other Identifiers 3

OtherMD-48932IA · State Medical License
Other72459MN · State Medical License
Other7585AWY · State Medical License

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of North Dakota, CareSource (Common Ground Healthcare), Group Health Cooperative-SCW and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mr. Mark W Walter M.d is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6103858477
PECOS Enrollment IDI20231107001579
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.

Hospital Affiliations CMS Care Compare

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

Mille Lacs Health System

Critical Access Hospitals · Onamia, MN
OwnershipVoluntary non-profit - Private
CMS Certification Number241356
Location200 North Elm StreetOnamia, MN 56359 · Mille Lacs County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 52001 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
$161.40 typical visit price
range $52.96 – $161.40
Typical copayment $40.35 (range $13.24 – $40.35)
Most-billed visit code 99205
Established Patient
$66.36 typical visit price
range $16.91 – $131.98
Typical copayment $16.59 (range $4.22 – $32.99)
Most-billed visit code 99213
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.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability100
Improvement Activities40

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.

DR. SAMANTHA S HUMKE D.D.S.
Dentist
1690 ELM ST STE 300
DUBUQUE, IA 52001
Dubuque County (563) 690-2850
CAITLYN BRYANNE HICKS DNP, FNP-BC
Nurse Practitioner (Family)
1690 ELM ST STE 300
DUBUQUE, IA 52001
Dubuque County (563) 690-2850
ALLISON L SCHWAB LISW
Social Worker (Clinical)
1690 ELM ST STE 300
DUBUQUE, IA 52001
Dubuque County (563) 690-2850
RACHAEL A. PLOESSL DNP, FNP-BC
Nurse Practitioner (Family)
1690 ELM ST STE 300
DUBUQUE, IA 52001
Dubuque County (563) 690-2850
MR. BENJAMIN ALLEN SHAW L.I.S.W.
Social Worker (Clinical)
1690 ELM ST STE 300
DUBUQUE, IA 52001
Dubuque County (563) 690-2850
DR. SHIQI WANG DMD
Dentist (General Practice)
1690 ELM ST STE 300
DUBUQUE, IA 52001
Dubuque County (563) 690-2850
MICHELE ANN GANSHIRT A.R.N.P.
Nurse Practitioner (Pediatrics)
1690 ELM ST STE 300
DUBUQUE, IA 52001
Dubuque County (563) 690-2850
ASHLEY MARIE BIEDERMANN FNP
Nurse Practitioner (Family)
1690 ELM ST STE 300
DUBUQUE, IA 52001
Dubuque County (563) 690-2850

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 Mark Walter's NPI number?

The NPI number for Mark Walter is 1205910643. It was assigned to this individual provider in the NPPES registry on October 24, 2006.

Where is Mark Walter located?

Mark Walter practices at 1690 Elm St Ste 300, Dubuque, IA 52001. The listed phone number is (563) 690-2850.

What is Mark Walter's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Mark Walter enrolled in Medicare?

Yes. Mark Walter is registered in the Medicare PECOS enrollment system.

What insurance does Mark Walter accept?

Health plans from Blue Cross Blue Shield of North Dakota, CareSource (Common Ground Healthcare), Group Health Cooperative-SCW, HealthPartners and Medica and 5 other insurers list Mark Walter 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 Mark Walter affiliated with any hospitals?

According to CMS data, Mark Walter is affiliated with Mille Lacs Health System.

When was this NPI record last updated?

The NPPES record for Mark Walter was last updated on January 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.