Eric Dietrich, PA
NPI 1639137250 · Surgical Physician Assistant · Mission Viejo, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eric Dietrich, PA is a Surgical Physician Assistant provider in Mission Viejo, CA (NPI 1639137250).
Provider details
- NPI number
- 1639137250
- Entity type
- Individual
- Primary specialty
- Surgical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- PA15996 (CA)
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 tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
12 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Replacement of Knee Joint, Both Sides of Knee27447 | 12 | $182 |
Typical Medicare-allowed amounts for these services range $182–$182 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,044 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 22431 Antonio Pkwy # B160-613Rancho Santa Margarita, CA 92688-2804Phone: (833) 477-2677Fax: (833) 477-2677
- 3801 S Harbor BlvdSanta Ana, CA 92704-7901Phone: (714) 751-5555
Registry dates
- Enumerated
- 2006-05-03
- Last updated
- 2023-03-07
- Certified
- 2020-10-24
Frequently asked questions
- What is Eric Dietrich's NPI number?
- Eric Dietrich's National Provider Identifier (NPI) is 1639137250, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eric Dietrich's specialty?
- Eric Dietrich is listed in the NPPES registry with a primary specialty of Surgical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Eric Dietrich located?
- Eric Dietrich's practice location on file with NPPES is 27700 Medical Center Rd, Mission Viejo, CA 92691-6426.
- What is Eric Dietrich's phone number?
- The practice phone number listed in the NPPES registry for Eric Dietrich is (949) 364-1400.
- Does Eric Dietrich accept Medicare?
- Eric Dietrich is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eric Dietrich's NPI active?
- Yes — Eric Dietrich's NPI (1639137250) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.