Mark Milliron, PA-C
NPI 1134523145 · Physician Assistant · Loma Linda, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Milliron, PA-C is a Physician Assistant provider in Loma Linda, CA (NPI 1134523145).
Provider details
- NPI number
- 1134523145
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- 52073 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
11 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Metformin Hcl | 21 |
| Gabapentin | 20 |
| Trazodone Hcl | 18 |
| Atorvastatin Calcium | 17 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 15 |
| Ibuprofen | 13 |
| Aripiprazole | 11 |
| Baclofen | 11 |
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 , 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$22 across 1 record (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 (1)
- 57445 Twentynine Palms HwySuite 302Yucca Valley, CA 92284Phone: (760) 366-7555Fax: (760) 366-0529
Registry dates
- Enumerated
- 2014-10-20
- Last updated
- 2024-09-19
- Certified
- 2024-09-12
Frequently asked questions
- What is Mark Milliron's NPI number?
- Mark Milliron's National Provider Identifier (NPI) is 1134523145, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Milliron's specialty?
- Mark Milliron is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mark Milliron located?
- Mark Milliron's practice location on file with NPPES is 11234 Anderson St, Loma Linda, CA 92350-2804.
- What is Mark Milliron's phone number?
- The practice phone number listed in the NPPES registry for Mark Milliron is (909) 289-6141.
- Does Mark Milliron accept Medicare?
- Mark Milliron is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Milliron's NPI active?
- Yes — Mark Milliron's NPI (1134523145) is active in the NPPES registry as of the last update on 2024-09-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.