Olga Segal, MD
NPI 1821013764 · Psychiatry Physician · Kelseyville, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Olga Segal, MD is a Psychiatry Physician provider in Kelseyville, CA (NPI 1821013764).
Provider details
- NPI number
- 1821013764
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A85774 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1,002 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) |
|---|---|---|
| Treatment Using Magnetic Field to Stimulate Nerve Cells in Brain, Subsequent Delivery and Management90868 | 685 | $141 |
| Psychotherapy, 1 Hour90837 | 177 | $171 |
| Treatment Using Magnetic Field to Stimulate Nerve Cells in Brain, Subsequent Motor Threshold Redetermination With Delivery and Management90869 | 83 | $233 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 41 | $215 |
| Treatment Using Magnetic Field to Stimulate Nerve Cells in Brain, Initial Delivery and Management90867 | 16 | $249 |
Typical Medicare-allowed amounts for these services range $141–$249 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Aripiprazole | 56 | — |
| Esketamine Hclbrand: Spravato | 32 | — |
| Clonazepam | 27 | — |
| Lorazepam | 21 | — |
| Duloxetine Hcl | 19 | — |
| Divalproex Sodium | 15 | — |
| Zolpidem Tartrate | 15 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-13
- Last updated
- 2020-05-06
- Certified
- 2020-05-06
Frequently asked questions
- What is Olga Segal's NPI number?
- Olga Segal's National Provider Identifier (NPI) is 1821013764, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Olga Segal's specialty?
- Olga Segal is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Olga Segal located?
- Olga Segal's practice location on file with NPPES is 3455 Westridge Dr, Kelseyville, CA 95451-8227.
- What is Olga Segal's phone number?
- The practice phone number listed in the NPPES registry for Olga Segal is (707) 279-2932.
- Does Olga Segal accept Medicare?
- Olga Segal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Olga Segal's NPI active?
- Yes — Olga Segal's NPI (1821013764) is active in the NPPES registry as of the last update on 2020-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.