NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1164992277 PA-C
Verify on CMS → Jessica Chan, PA-C
Physician Assistant in Modesto, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 150,974 in Physician Assistant, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 657 beneficiaries · Physician Assistant avg: 790
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.1K
43 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Jessica Chan, PA-C filed 1,721 Medicare Part D claims in 2023 as a Physician Assistant in Modesto, California, prescribing 93% generic.
- 2K
- Part D claims, 2023
- 93%
- generic prescribing
- $1.1K
- industry payments (Sunshine Act)
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.
Jessica Chan, PA-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,721 Top 17% higher than 83% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Jessica Chan, PA-C?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
1,721 118% vs specialty avg
Specialty distribution in California
How Physician Assistant compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Physician Assistant. Verify directly:
How MIPS and board certification work
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).
Jessica Chan, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 1700 COFFEE RD, Modesto, CA, 95355, with a listed phone of (209) 526-4500. NPI 1164992277 was issued on 12/01/2018.
Medicare Part D records for calendar year 2023 show 1,721 prescription claims written by this provider, covering 657 Medicare beneficiaries and totaling roughly $697K in drug spend, split 7% brand-name and 93% generic by claim count.
Physician Assistant is a high-volume specialty nationwide, with 150,974 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
Provider Details
| NPI | 1164992277 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA-C |
| Gender | Female |
| NPI Issued | 12/01/2018 |
Hospital and facility affiliations
Facilities where Jessica Chan, PA-C bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Csi Medical Group
Modesto, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Jessica Chan, PA-C. Source: openpaymentsdata.cms.gov.
Total received
$1.1K
Largest payer
Janssen Biotech, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Jessica Chan, PA-C. To verify Jessica Chan, PA-C'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 · Generic-heavy
Jessica Chan, PA-C - brand share 7.0%
Physician Assistant average
7% brand-name claims vs 93% generic, on 1,721 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.
1,721
Total Claims
$697K
Total Drug Cost
657
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,827
- Total Day Supply
- 49,726
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $600K
- Generic Drug Cost
- $97K
- Antibiotic Claims
- 96
Patient Demographics
- Average Patient Age
- 75.1 years
- Avg HCC Risk Score
- 1.16
- Gender Split
- 47% female / 53% male
- Age Distribution
- <65: 39, 65-74: 275, 75-84: 263, 85+: 80
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Jessica Chan, PA-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Fluorouracil
Fluorouracil
466 claims
- Ketoconazole
Ketoconazole
352 claims
- Triamcinolone Acet… 153
Triamcinolone Acetonide
153 claims
- Clobetasol Propion… 150
Clobetasol Propionate
150 claims
- Hydrocortisone 90
Hydrocortisone
90 claims
- Doxycycline Hyclate 57
Doxycycline Hyclate
57 claims
- Clindamycin Phosph… 54
Clindamycin Phosphate
54 claims
- Calcipotriene 40
Calcipotriene
40 claims
| Drug | Claims |
|---|---|
| Fluorouracil | 466 |
| Ketoconazole | 352 |
| Triamcinolone Acetonide | 153 |
| Clobetasol Propionate | 150 |
| Hydrocortisone | 90 |
| Doxycycline Hyclate | 57 |
| Clindamycin Phosphate | 54 |
| Calcipotriene | 40 |
| Fluocinonide | 40 |
| Mupirocin | 38 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Jessica Chan, PA-C fits within the Physician Assistant landscape nationally.
150,974
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Jessica Chan, PA-C's 1,721 claims are above 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 Chan.
Dr. Marcia -Galbraith
PA
Stockton, CA
Dr. Danny Abad
PA
Orange, CA
Dr. Lea Dominique Abadies
PA
Tustin, CA
Dr. Rea Elizabeth Abaniel
P.A.-C
Seal Beach, CA
Dr. Ramina Abbasi
PA-C
Signal Hill, CA
Compare Physician Assistant nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Physician Assistant peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Jessica Chan, PA-C's specialty? ▼
Jessica Chan, PA-C specializes in Physician Assistant and practices in Modesto, California. Credentials: PA-C.
How much does Jessica Chan, PA-C prescribe under Medicare Part D? ▼
In 2023, Jessica Chan, PA-C wrote 1,721 Medicare Part D claims totaling $697K in drug costs for 657 beneficiaries.
Where is Jessica Chan, PA-C located? ▼
Jessica Chan, PA-C is located at 1700 COFFEE RD, Modesto, CA, 95355. Phone: (209) 526-4500.
What is Jessica Chan, PA-C's NPI number? ▼
Jessica Chan, PA-C's National Provider Identifier (NPI) is 1164992277, issued on 12/01/2018.
Does Jessica Chan, PA-C prescribe more brand-name or generic drugs? ▼
Jessica Chan, PA-C's prescribing is 7% brand-name and 93% generic drugs by claim count, with $600K in brand drug costs.
How many Physician Assistant providers are there in the US? ▼
There are 150,974 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 Jessica Chan, PA-C prescribe most often? ▼
Based on 2023 Medicare Part D data, Jessica Chan, PA-C's most frequently prescribed drugs include Fluorouracil, Ketoconazole, Triamcinolone Acetonide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jessica Chan, PA-C accept Medicare? ▼
Jessica Chan, PA-C appears in CMS Medicare data with 1,721 Part D claims and 657 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jessica Chan, PA-C's credentials? ▼
Jessica Chan, PA-C's NPI is 1164992277 with credentials PA-C. 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
View source datasets and methodology notes
- 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.
- 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
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.