Mark Bontreger, PSYCHOLOGIST
NPI 1861505190 · Clinical Psychologist · Watertown, SD
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Bontreger, PSYCHOLOGIST is a Clinical Psychologist provider in Watertown, SD (NPI 1861505190).
Provider details
- NPI number
- 1861505190
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYCHOLOGIST
- Sex
- Male
- Sole proprietor
- Yes
- License
- 364 (SD)
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
91 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 | 91 | $100 |
Typical Medicare-allowed amounts for these services range $100–$100 (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
- 2006-08-17
- Last updated
- 2007-11-02
Frequently asked questions
- What is Mark Bontreger's NPI number?
- Mark Bontreger's National Provider Identifier (NPI) is 1861505190, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Bontreger's specialty?
- Mark Bontreger is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Bontreger located?
- Mark Bontreger's practice location on file with NPPES is 525 5th St Se, Watertown, SD 57201-4940.
- What is Mark Bontreger's phone number?
- The practice phone number listed in the NPPES registry for Mark Bontreger is (605) 882-0800.
- Does Mark Bontreger accept Medicare?
- Mark Bontreger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Bontreger's NPI active?
- Yes — Mark Bontreger's NPI (1861505190) is active in the NPPES registry as of the last update on 2007-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.