Marcia Oen, PA-C, MPH
NPI 1174098727 · Surgical Physician Assistant · Whittier, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcia Oen, PA-C, MPH is a Surgical Physician Assistant provider in Whittier, CA (NPI 1174098727).
Provider details
- NPI number
- 1174098727
- Entity type
- Individual
- Primary specialty
- Surgical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C, MPH
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
83% 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 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 14 | 14 |
| Chlorhexidine Gluconate | 13 | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-10-10
- Last updated
- 2025-09-10
- Certified
- 2025-09-10
Frequently asked questions
- What is Marcia Oen's NPI number?
- Marcia Oen's National Provider Identifier (NPI) is 1174098727, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcia Oen's specialty?
- Marcia Oen is listed in the NPPES registry with a primary specialty of Surgical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marcia Oen located?
- Marcia Oen's practice location on file with NPPES is 12401 Washington Blvd, Whittier, CA 90602-1006.
- What is Marcia Oen's phone number?
- The practice phone number listed in the NPPES registry for Marcia Oen is (562) 698-0811.
- Does Marcia Oen accept Medicare?
- Marcia Oen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcia Oen's NPI active?
- Yes — Marcia Oen's NPI (1174098727) is active in the NPPES registry as of the last update on 2025-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.