NPPES file of Aug 9, 2026

Peter D. Nierman, M.D.

Child & Adolescent Psychiatry Physician · Aliso Viejo, CA

Peter D. Nierman, M.D. is a child & adolescent psychiatry physician with a practice address in Aliso Viejo, California, and NPI 1801994769, issued on Sep 21, 2006. Check the license (California G168746, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1801994769
Name
Peter D. Nierman
Credential
M.D.
Primary taxonomy
Child & Adolescent Psychiatry Physician 2084P0804X
License number
G168746 CA
Self-reported in NPPES; status is on the state search
Practice location
200 Freedom LN, Aliso Viejo, CA 92656
Phone
(949) 900-8600
Enumerated
Sep 21, 2006
Record last updated
Mar 21, 2024
Fax
(949) 221-3590
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest child & adolescent psychiatry physician records → All 1,009 in California → Look up another NPI →

Also registered at 200 Freedom LN

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Maryam Aziz, LCSWClinical Social Worker1720415201
  2. Nicholas Calderon, NPPsychiatric/Mental Health Nurse Practitioner1952287831
  3. Albert ChungPharmacist1851906010
  4. Addie Gonwa RamondaPsychiatric/Mental Health Nurse Practitioner1437988946
  5. Abraham Maaz, MDPsychiatry Physician1033679287
  6. Kevin NguyenPharmacist1619568391

Verify Peter D. Nierman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G168746    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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Peter D. Nierman among 1,009 child & adolescent psychiatry physician records in California

Peter D. Nierman, M.D. is one of 1,009 child & adolescent psychiatry physician records with a practice address in California. 55% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 3% of them.

  • NPI issued2006 · 3% of these records are older, 65% newer
  • In a Medicare fileNo · 55% of these records are
  • In the CMS Doctors and Clinicians fileNo · 21% of these records are
  • Record last updated2024 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0804X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Child & Adolescent Psychiatry Physician providers in California

There are 1,009 child & adolescent psychiatry physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,009 in California → Every provider in Aliso Viejo → Child & Adolescent Psychiatry Physician nationwide →

The 8 child & adolescent psychiatry physician records with the nearest ZIP codes

  1. Julia Hermes, MDAliso Viejo, CA 926561841378239
  2. Anthony BuiLaguna Hills, CA 926531346628880
  3. Keeban Nam, M.D.Laguna Hills, CA 926531114347333
  4. Esther Park, D.O.Laguna Hills, CA 926531356420301
  5. Amada Almase, M.D.Newport Beach, CA 926601194748582
  6. Cat Dang, D.O.Newport Beach, CA 926601992863955
  7. Linda Do, D.O.Newport Beach, CA 926601689990434
  8. Michael Hwang, M.D.Newport Beach, CA 926601336382316

Common questions

What is Peter D. Nierman, M.D.'s NPI number?

Peter D. Nierman, M.D.'s National Provider Identifier (NPI) is 1801994769, issued on Sep 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Peter D. Nierman, M.D. located?

The NPPES record lists a practice address at 200 Freedom LN, Aliso Viejo, CA, 92656. Phone: (949) 900-8600. Providers update this record themselves, so call before visiting.

How can I verify Peter D. Nierman, M.D.'s license?

NPPES lists California license number G168746, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.