Quick answers
- Does John W. Mahler accept Medicare assignment?
- Yes. Medicare's clinician data says John W. Mahler accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does John W. Mahler see?
- In 2024, CMS data shows 88 Original Medicare patients and 496 services for John W. Mahler. This counts Original Medicare only and measures volume, not quality.
- What is John W. Mahler's NPI number?
- 1063832640. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for John W. Mahler, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 88 |
|---|---|
| Services billed to Medicare | 496 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 63 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)272 services
- Psychotherapy with evaluation and management visit, 30 minutes (90833)94 services
- Telephone medical discussion with physician, 21-30 minutes (99443)34 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)27 services
- Telephone medical discussion with physician, 11-20 minutes (99442)23 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- Anxiety75%
- Depression63%
- High blood pressure58%
- High cholesterol45%
- Arthritis39%
- Diabetes19%
Practice locations
Addresses where John W. Mahler is enrolled with Medicare (CMS data updated October 2, 2026).
- 1201 S Miller StWenatchee, WA 98801 (509) 662‑2208
Group practices
Medicare enrollment lists John W. Mahler as a member of this group (CMS data updated October 2, 2026).
- Central Washington Health Services Association721 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Wenatchee
Clinicians with the same Medicare primary specialty in Wenatchee, WA — not a recommendation.
Other clinicians in Central Washington Health Services Association
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Connecticut School Of Medicine |
| Graduation year | 2014 (12 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1063832640 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians