2026 NPPES data Physician Assistant NPI 1003470931
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GREGORIO BARAJAS

Physician Assistant in CONCORD, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
193
Medicare Part D claims · 127 beneficiaries · Physician Assistant avg: 790
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
94.6267/100
▲ 12 pts above national avg 83.1 · [object Object]

What the federal data shows

GREGORIO BARAJAS reported a CMS MIPS final score of 94.6267/100 — above the 83.1 national average — and filed 193 Medicare Part D claims in 2023.

94.6267/100
MIPS score · +12 vs avg
193
Part D claims, 2023
90%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

GREGORIO BARAJAS's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

95 Top 25% higher than 75% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

What does the federal data show about GREGORIO BARAJAS?

High performer (top quartile)

NPI registry status

Active

Issued 04/25/2019

NPI 1003470931

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

193 76% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

94.6267/100 11.526700000000005% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in California

How Physician Assistant compares to other specialties among California providers

California providers

Physician Assistant share within California

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within California

Medicare quality performance — MIPS

GREGORIO BARAJAS's 2023 MIPS final score plotted against the Physician Assistant national average

High performer (top quartile)
MIPS Final Score
94.6267/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 94.6267/100 vs national avg 83.1

0%100%National avg83%94.6%
MIPS final score (Physician Assistant) — 94.6267/100 vs national avg 83.1

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

GREGORIO BARAJAS appears in the CMS NPPES registry as a Physician Assistant provider at 1001 GALAXY WAY # 400, CONCORD, CA, 94520, with a listed phone of (925) 225-5837. NPI 1003470931 was issued on 04/25/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BARAJAS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 193 prescription claims written by this provider, covering 127 Medicare beneficiaries and totaling roughly $8K in drug spend, split 10% brand-name and 90% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 94.6267/100 for the 2023 performance year (Quality 76.6789, Cost 97.1443), compared with the national average of 83.1.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1001 GALAXY WAY # 400
CONCORD, CA 94520

Provider Details

NPI 1003470931
Specialty Physician Assistant
Gender Male
NPI Issued 04/25/2019

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

94.6267
Final Score
Avg: 83.1
76.6789
Quality
97.1443
Cost

Reporting: Group practice

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to GREGORIO BARAJAS. To verify GREGORIO BARAJAS's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

GREGORIO BARAJAS — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 193 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

193
Total Claims
$8K
Total Drug Cost
127
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
211
Total Day Supply
3,020
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$6K
Generic Drug Cost
$2K
Antibiotic Claims
41

Patient Demographics

Average Patient Age
66.9 years
Avg HCC Risk Score
1.78
Gender Split
58% female / 42% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What GREGORIO BARAJAS prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Ibuprofen
42
Prednisone
12
Cyclobenzaprine Hcl
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Physician Assistant Overview

How GREGORIO BARAJAS fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

GREGORIO BARAJAS's 193 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as BARAJAS.

Compare Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is GREGORIO BARAJAS's specialty?
GREGORIO BARAJAS specializes in Physician Assistant and practices in CONCORD, California.
How much does GREGORIO BARAJAS prescribe under Medicare Part D?
In 2023, GREGORIO BARAJAS wrote 193 Medicare Part D claims totaling $8K in drug costs for 127 beneficiaries.
What is GREGORIO BARAJAS's Medicare quality score?
GREGORIO BARAJAS has a CMS MIPS Final Score of 94.6267/100 (Quality: 76.6789, Cost: 97.1443). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is GREGORIO BARAJAS located?
GREGORIO BARAJAS is located at 1001 GALAXY WAY # 400, CONCORD, CA, 94520. Phone: (925) 225-5837.
What is GREGORIO BARAJAS's NPI number?
GREGORIO BARAJAS's National Provider Identifier (NPI) is 1003470931, issued on 04/25/2019.
Does GREGORIO BARAJAS prescribe more brand-name or generic drugs?
GREGORIO BARAJAS's prescribing is 10% brand-name and 90% generic drugs by claim count, with $6K in brand drug costs.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does GREGORIO BARAJAS prescribe most often?
Based on 2023 Medicare Part D data, GREGORIO BARAJAS's most frequently prescribed drugs include Ibuprofen, Prednisone, Cyclobenzaprine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GREGORIO BARAJAS accept Medicare?
GREGORIO BARAJAS appears in CMS Medicare data with 193 Part D claims and 127 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GREGORIO BARAJAS's credentials?
GREGORIO BARAJAS's NPI is 1003470931. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology