2026 NPPES data Physician Assistant NPI 1790301059 PA-C
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ANNE CHAN, PA-C

Physician Assistant in MOUNTAIN VIEW, 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
149
Medicare Part D claims · 111 beneficiaries · Physician Assistant avg: 790
What the federal data reveals: ANNE CHAN, PA-C is a Physician Assistant ([object Object]) practicing in MOUNTAIN VIEW, California with a Medicare Part D prescribing footprint of 149 claims across 111 beneficiaries .

What stands out: ANNE CHAN, PA-C filed 149 Medicare Part D claims in 2023 across MOUNTAIN VIEW, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

ANNE CHAN, PA-C at a glance

Quality data not reported

NPI registry status

Active

Issued 06/23/2020

NPI 1790301059

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

149 81% 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).

ANNE CHAN, PA-C is a Physician Assistant provider practicing in MOUNTAIN VIEW, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PA-C. NPI: 1790301059. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

ANNE CHAN, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 701 E EL CAMINO REAL, MOUNTAIN VIEW, CA, 94040, with a listed phone of (650) 404-8445. NPI 1790301059 was issued on 06/23/2020. 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 149 prescription claims written by this provider, covering 111 Medicare beneficiaries and totaling roughly $2K in drug spend. 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

701 E EL CAMINO REAL
MOUNTAIN VIEW, CA 94040

Provider Details

NPI 1790301059
Specialty Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 06/23/2020

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 ANNE CHAN, PA-C. To verify ANNE 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.

Medicare Part D Prescribing Data

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

149
Total Claims
$2K
Total Drug Cost
111
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
149
Total Day Supply
1,708
Generic Drug Cost
$1K
Antibiotic Claims
69

Patient Demographics

Average Patient Age
75.3 years
Avg HCC Risk Score
1.18
Gender Split
61% female / 39% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Cephalexin
17
Doxycycline Monohydrate
14

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

Physician Assistant Overview

How ANNE 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

ANNE CHAN, PA-C's 149 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 CHAN.

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

Frequently Asked Questions

What is ANNE CHAN, PA-C's specialty?
ANNE CHAN, PA-C specializes in Physician Assistant and practices in MOUNTAIN VIEW, California. Credentials: PA-C.
How much does ANNE CHAN, PA-C prescribe under Medicare Part D?
In 2023, ANNE CHAN, PA-C wrote 149 Medicare Part D claims totaling $2K in drug costs for 111 beneficiaries.
Where is ANNE CHAN, PA-C located?
ANNE CHAN, PA-C is located at 701 E EL CAMINO REAL, MOUNTAIN VIEW, CA, 94040. Phone: (650) 404-8445.
What is ANNE CHAN, PA-C's NPI number?
ANNE CHAN, PA-C's National Provider Identifier (NPI) is 1790301059, issued on 06/23/2020.
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 ANNE CHAN, PA-C prescribe most often?
Based on 2023 Medicare Part D data, ANNE CHAN, PA-C's most frequently prescribed drugs include Cephalexin, Doxycycline Monohydrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANNE CHAN, PA-C accept Medicare?
ANNE CHAN, PA-C appears in CMS Medicare data with 149 Part D claims and 111 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANNE CHAN, PA-C's credentials?
ANNE CHAN, PA-C's NPI is 1790301059 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