Mark Walter, M.D
NPI 1205910643 · Psychiatry Physician · Dubuque, IA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Walter, M.D is a Psychiatry Physician provider in Dubuque, IA (NPI 1205910643).
Provider details
- NPI number
- 1205910643
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- MD-48932 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Duloxetine Hcl | 75 | 21 |
| Buspirone Hcl | 67 | 19 |
| Mirtazapine | 35 | 11 |
| Bupropion Hclbrand: Bupropion Xl | 29 | — |
| Vortioxetine Hydrobromidebrand: Trintellix | 29 | — |
| Fluoxetine Hcl | 24 | — |
| Lamotrigine | 24 |
Practice location
Mailing address
Additional practice locations (1)
- 501 S Burma AveGillette, WY 82716-3426Phone: (307) 688-5000Fax: (307) 688-5074
Registry dates
- Enumerated
- 2006-10-24
- Last updated
- 2025-01-23
- Certified
- 2025-01-23
Frequently asked questions
- What is Mark Walter's NPI number?
- Mark Walter's National Provider Identifier (NPI) is 1205910643, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Walter's specialty?
- Mark Walter is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Walter located?
- Mark Walter's practice location on file with NPPES is 1690 Elm St Ste 300, Dubuque, IA 52001-3679.
- What is Mark Walter's phone number?
- The practice phone number listed in the NPPES registry for Mark Walter is (563) 690-2850.
- Does Mark Walter accept Medicare?
- Mark Walter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Walter's NPI active?
- Yes — Mark Walter's NPI (1205910643) is active in the NPPES registry as of the last update on 2025-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.