Erik Petersen, MD
NPI 1922210251 · Psychiatry Physician · Santa Ana, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erik Petersen, MD is a Psychiatry Physician provider in Santa Ana, CA (NPI 1922210251).
Provider details
- NPI number
- 1922210251
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A137589 (CA)
Specialties & taxonomies
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 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 178 | 48 |
| Olanzapine | 148 | 31 |
| Aripiprazole | 136 | 29 |
| Quetiapine Fumarate | 131 | 27 |
| Lamotrigine | 117 | 25 |
| Risperidone | 80 | 18 |
| Benztropine Mesylate | 76 | 17 |
| Fluoxetine Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-07
- Last updated
- 2026-02-18
- Certified
- 2026-02-18
Frequently asked questions
- What is Erik Petersen's NPI number?
- Erik Petersen's National Provider Identifier (NPI) is 1922210251, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erik Petersen's specialty?
- Erik Petersen is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Erik Petersen located?
- Erik Petersen's practice location on file with NPPES is 999 N Tustin Ave Ste 216, Santa Ana, CA 92705-6506.
- What is Erik Petersen's phone number?
- The practice phone number listed in the NPPES registry for Erik Petersen is (714) 545-5550.
- Does Erik Petersen accept Medicare?
- Erik Petersen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erik Petersen's NPI active?
- Yes — Erik Petersen's NPI (1922210251) is active in the NPPES registry as of the last update on 2026-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.