John Sondag, L.M.H.C.
NPI 1912125360 · Mental Health Counselor · Denison, IA
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Sondag, L.M.H.C. is a Mental Health Counselor provider in Denison, IA (NPI 1912125360).
Provider details
- NPI number
- 1912125360
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- L.M.H.C.
- Sex
- Male
- Sole proprietor
- No
- License
- 00799 (IA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
65 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) |
|---|---|---|
| Psychotherapy, 45 Minutes90834 | 54 | $74 |
| Psychiatric Diagnostic Evaluation90791 | 11 | $123 |
Typical Medicare-allowed amounts for these services range $74–$123 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-23
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Sondag's NPI number?
- John Sondag's National Provider Identifier (NPI) is 1912125360, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Sondag's specialty?
- John Sondag is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is John Sondag located?
- John Sondag's practice location on file with NPPES is 20 N 14th St, Denison, IA 51442-2026.
- What is John Sondag's phone number?
- The practice phone number listed in the NPPES registry for John Sondag is (712) 263-3172.
- Does John Sondag accept Medicare?
- John Sondag is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Sondag's NPI active?
- Yes — John Sondag's NPI (1912125360) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.