Holly Stefani
NPI 1891209185 · Clinical Social Worker · Costa Mesa, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Holly Stefani is a Clinical Social Worker provider in Costa Mesa, CA (NPI 1891209185).
Provider details
- NPI number
- 1891209185
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 18688 (CA)
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
8 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
733 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 | 595 | $120 |
| Psychotherapy, 30 Minutes90832 | 71 | $62 |
| Psychotherapy, 45 Minutes90834 | 50 | $81 |
| Psychiatric Diagnostic Evaluation90791 | 17 | $136 |
Typical Medicare-allowed amounts for these services range $62–$136 (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
- 2017-11-22
- Last updated
- 2017-11-22
Frequently asked questions
- What is Holly Stefani's NPI number?
- Holly Stefani's National Provider Identifier (NPI) is 1891209185, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Holly Stefani's specialty?
- Holly Stefani is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Holly Stefani located?
- Holly Stefani's practice location on file with NPPES is 288 Sherwood St, Costa Mesa, CA 92627-2160.
- What is Holly Stefani's phone number?
- The practice phone number listed in the NPPES registry for Holly Stefani is (949) 375-0938.
- Does Holly Stefani accept Medicare?
- Holly Stefani is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Holly Stefani's NPI active?
- Yes — Holly Stefani's NPI (1891209185) is active in the NPPES registry as of the last update on 2017-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.