Peter Nierman, M.D.
NPI 1801994769 · Child & Adolescent Psychiatry Physician · Aliso Viejo, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peter Nierman, M.D. is a Child & Adolescent Psychiatry Physician provider in Aliso Viejo, CA (NPI 1801994769).
Provider details
- NPI number
- 1801994769
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G168746 (CA)
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-21
- Last updated
- 2024-03-21
- Certified
- 2024-03-21
Frequently asked questions
- What is Peter Nierman's NPI number?
- Peter Nierman's National Provider Identifier (NPI) is 1801994769, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Nierman's specialty?
- Peter Nierman is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Peter Nierman located?
- Peter Nierman's practice location on file with NPPES is 200 Freedom Ln, Aliso Viejo, CA 92656-5876.
- What is Peter Nierman's phone number?
- The practice phone number listed in the NPPES registry for Peter Nierman is (949) 900-8600.
- Does Peter Nierman accept Medicare?
- Peter Nierman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peter Nierman's NPI active?
- Yes — Peter Nierman's NPI (1801994769) is active in the NPPES registry as of the last update on 2024-03-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.