Nadya Friedman
NPI 1811048911 · Psychiatry Physician · Clearlake, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nadya Friedman is a Psychiatry Physician provider in Clearlake, CA (NPI 1811048911).
Provider details
- NPI number
- 1811048911
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 241466 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 219 | 45 |
| Trazodone Hcl | 194 | 40 |
| Duloxetine Hcl | 185 | 30 |
| Aripiprazole | 161 | 27 |
| Escitalopram Oxalate | 149 | 25 |
| Mirtazapine | 116 | 22 |
| Lamotrigine | 104 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-15
- Last updated
- 2022-02-14
- Certified
- 2022-02-14
Frequently asked questions
- What is Nadya Friedman's NPI number?
- Nadya Friedman's National Provider Identifier (NPI) is 1811048911, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nadya Friedman's specialty?
- Nadya Friedman is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Nadya Friedman located?
- Nadya Friedman's practice location on file with NPPES is 15230 Lakeshore Dr, Clearlake, CA 95422-8107.
- What is Nadya Friedman's phone number?
- The practice phone number listed in the NPPES registry for Nadya Friedman is (707) 995-4500.
- Does Nadya Friedman accept Medicare?
- Nadya Friedman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nadya Friedman's NPI active?
- Yes — Nadya Friedman's NPI (1811048911) is active in the NPPES registry as of the last update on 2022-02-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.