2026 NPPES data Physician Assistant NPI 1164992277 PA-C
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JESSICA CHAN, PA-C

Physician Assistant in MODESTO, 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
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)

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

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). This entry sits in this band. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 reported

NPI registry status

Active

Issued 12/01/2018

NPI 1164992277

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

1,721 118% vs specialty avg

2023 prescription claims

Specialty avg: 790

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

Specialty board-certification context

Estimated specialty board-certified rate — Physician Assistant (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Physician Assistant ABMS/AOA estimate

Est. board-certified rate (Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Physician Assistant) — ABMS / AOA estimate

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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHAN 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 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. 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.

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

1700 COFFEE RD
MODESTO, CA 95355

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%
Specialty average (est.)

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

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
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.

149,975
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.

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

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 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 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

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