Marianne Osentoski, PH.D.
NPI 1114009933 · Psychologist · Mills River, NC
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marianne Osentoski, PH.D. is a Psychologist provider in Mills River, NC (NPI 1114009933).
Provider details
- NPI number
- 1114009933
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 5643 (NC)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
135 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, 1 Hour90837 | 135 | $146 |
Typical Medicare-allowed amounts for these services range $146–$146 (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
Additional practice locations (2)
- 37 Waldron StHillsdale, MI 49242-1832Phone: (517) 439-4596Fax: (517) 439-4597
- 19 Rookery WayHilton Head Island, SC 29926-2572Phone: (843) 422-8851
Registry dates
- Enumerated
- 2006-10-20
- Last updated
- 2026-03-11
- Certified
- 2026-03-11
Frequently asked questions
- What is Marianne Osentoski's NPI number?
- Marianne Osentoski's National Provider Identifier (NPI) is 1114009933, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marianne Osentoski's specialty?
- Marianne Osentoski is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Marianne Osentoski located?
- Marianne Osentoski's practice location on file with NPPES is 133 Chestnut Ridge Rd, Mills River, NC 28759-2692.
- What is Marianne Osentoski's phone number?
- The practice phone number listed in the NPPES registry for Marianne Osentoski is (843) 422-8851.
- Does Marianne Osentoski accept Medicare?
- Marianne Osentoski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marianne Osentoski's NPI active?
- Yes — Marianne Osentoski's NPI (1114009933) is active in the NPPES registry as of the last update on 2026-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.