2026 NPPES data Allergy Physician NPI 1285681007 M.D.
Verify on CMS →

ANLIN XU, M.D.

Allergy Physician in SAN JOSE, 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
203
Medicare Part D claims · 36 beneficiaries · Allergy Physician avg: 755
Generic prescribing
35%
generic claims · 65% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.4K
48 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ANLIN XU, M.D. is a Allergy Physician ([object Object]) practicing in SAN JOSE, California with a Medicare Part D prescribing footprint of 203 claims across 36 beneficiaries — 65% brand-name prescribing . Industry payments of $1.4K across 48 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ANLIN XU, M.D. filed 203 Medicare Part D claims in 2023 across SAN JOSE, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

ANLIN XU, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

ANLIN XU, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 05/27/2006

NPI 1285681007

Primary specialty

Allergy Physician

Niche

1,019 US NPIs in this specialty

Medicare Part D claims

203 73% vs specialty avg

2023 prescription claims

Specialty avg: 755

Specialty distribution in California

How Allergy Physician compares to other specialties among California providers

California providers

Allergy Physician share within California

1. Allergy Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Allergy Physician share within California

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Allergy Physician) — 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).

ANLIN XU, M.D. is a Allergy Physician provider practicing in SAN JOSE, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1285681007. 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.

ANLIN XU, M.D. appears in the CMS NPPES registry as a Allergy Physician provider holding M.D. credentials at 130 BELLEROSE DR, SAN JOSE, CA, 95128, with a listed phone of (408) 286-1707. NPI 1285681007 was issued on 05/27/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what XU 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 203 prescription claims written by this provider, covering 36 Medicare beneficiaries and totaling roughly $63K in drug spend, split 65% brand-name and 35% 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.

Allergy Physician is a narrow specialty nationwide, with 1,019 enrolled providers across 49 states and an average of 755 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

130 BELLEROSE DR
SAN JOSE, CA 95128

Provider Details

NPI 1285681007
Specialty Allergy Physician
Credentials M.D.
Gender Female
NPI Issued 05/27/2006

Hospital and facility affiliations

Facilities where ANLIN XU, M.D. 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.

SOUTH BAY ALLERGY AND ASTHMA GROUP INC
SAN JOSE, 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 ANLIN XU, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.4K

Largest payer

AstraZeneca Pharmaceuticals LP

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 ANLIN XU, M.D.. To verify ANLIN XU, M.D.'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 · Brand-heavy

ANLIN XU, M.D. — brand share 65.0%
Specialty average (est.)

65% brand-name claims vs 35% generic, on 203 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.

203
Total Claims
$63K
Total Drug Cost
36
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
257
Total Day Supply
7,069
Brand vs Generic
65% brand / 35% generic
Brand Drug Cost
$59K
Generic Drug Cost
$4K

Patient Demographics

Average Patient Age
74.0 years
Avg HCC Risk Score
0.92

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Albuterol Sulfate Hfa
Albuterol Sulfate
30
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
27
Ventolin Hfa
Albuterol Sulfate
18
Advair Hfa
Fluticasone Propion/Salmeterol
13
Montelukast Sodium
13
Breo Ellipta
Fluticasone/Vilanterol
12
Advair Diskus
Fluticasone Propion/Salmeterol
11

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

Allergy Physician Overview

How ANLIN XU, M.D. fits within the Allergy Physician landscape nationally.

1,019
Allergy Physician Providers in US
49
States with Allergy Physician
755
Avg Claims per Provider

ANLIN XU, M.D.'s 203 claims are below the specialty average of 755.

Nearby Allergy Physician Providers in California

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

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

Frequently Asked Questions

What is ANLIN XU, M.D.'s specialty?
ANLIN XU, M.D. specializes in Allergy Physician and practices in SAN JOSE, California. Credentials: M.D..
How much does ANLIN XU, M.D. prescribe under Medicare Part D?
In 2023, ANLIN XU, M.D. wrote 203 Medicare Part D claims totaling $63K in drug costs for 36 beneficiaries.
Where is ANLIN XU, M.D. located?
ANLIN XU, M.D. is located at 130 BELLEROSE DR, SAN JOSE, CA, 95128. Phone: (408) 286-1707.
What is ANLIN XU, M.D.'s NPI number?
ANLIN XU, M.D.'s National Provider Identifier (NPI) is 1285681007, issued on 05/27/2006.
Does ANLIN XU, M.D. prescribe more brand-name or generic drugs?
ANLIN XU, M.D.'s prescribing is 65% brand-name and 35% generic drugs by claim count, with $59K in brand drug costs.
How many Allergy Physician providers are there in the US?
There are 1,019 Allergy Physician providers across 49 states in the US. The average Allergy Physician provider writes 755 Medicare Part D claims per year.
What drugs does ANLIN XU, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ANLIN XU, M.D.'s most frequently prescribed drugs include Albuterol Sulfate Hfa, Trelegy Ellipta, Ventolin Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANLIN XU, M.D. accept Medicare?
ANLIN XU, M.D. appears in CMS Medicare data with 203 Part D claims and 36 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANLIN XU, M.D.'s credentials?
ANLIN XU, M.D.'s NPI is 1285681007 with credentials M.D.. 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