Matthew Bayer
NPI 1558438259 · Psychiatry Physician · Menasha, WI
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Bayer is a Psychiatry Physician provider in Menasha, WI (NPI 1558438259).
Provider details
- NPI number
- 1558438259
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 44798-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
457 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 314 | $114 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 143 | $15 |
Typical Medicare-allowed amounts for these services range $15–$114 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 82 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 425 | 50 |
| Aripiprazole | 311 | 51 |
| Lamotrigine | 253 | 49 |
| Buspirone Hcl | 245 | 42 |
| Sertraline Hcl | 202 | 34 |
| Olanzapine | 189 | 26 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 181 | 23 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-29
- Last updated
- 2011-11-16
Frequently asked questions
- What is Matthew Bayer's NPI number?
- Matthew Bayer's National Provider Identifier (NPI) is 1558438259, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Bayer's specialty?
- Matthew Bayer is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Bayer located?
- Matthew Bayer's practice location on file with NPPES is 1095 Midway Rd, Menasha, WI 54952-1115.
- What is Matthew Bayer's phone number?
- The practice phone number listed in the NPPES registry for Matthew Bayer is (920) 720-3700.
- Does Matthew Bayer accept Medicare?
- Matthew Bayer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Bayer's NPI active?
- Yes — Matthew Bayer's NPI (1558438259) is active in the NPPES registry as of the last update on 2011-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.