Gregorio Barajas
NPI 1003470931 · Physician Assistant · Concord, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregorio Barajas is a Physician Assistant provider in Concord, CA (NPI 1003470931).
Provider details
- NPI number
- 1003470931
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- PA56948 (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 tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
88 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 45 | $155 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 31 | $107 |
| X-Ray of Chest, 1 View71045 | 12 | $8 |
Typical Medicare-allowed amounts for these services range $8–$155 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ibuprofen | 20 | 20 |
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
Additional practice locations (1)
- 222 W 5th StPerris, CA 92570-2023Phone: (951) 805-2004
Registry dates
- Enumerated
- 2019-04-25
- Last updated
- 2022-01-25
- Certified
- 2022-01-25
Frequently asked questions
- What is Gregorio Barajas's NPI number?
- Gregorio Barajas's National Provider Identifier (NPI) is 1003470931, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregorio Barajas's specialty?
- Gregorio Barajas is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Gregorio Barajas located?
- Gregorio Barajas's practice location on file with NPPES is 1001 Galaxy Way # 400, Concord, CA 94520-5725.
- What is Gregorio Barajas's phone number?
- The practice phone number listed in the NPPES registry for Gregorio Barajas is (925) 225-5837.
- Does Gregorio Barajas accept Medicare?
- Gregorio Barajas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregorio Barajas's NPI active?
- Yes — Gregorio Barajas's NPI (1003470931) is active in the NPPES registry as of the last update on 2022-01-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.