2026 NPPES data Neurology Physician NPI 1427117050 MD
Verify on CMS →

QIAN ZHANG, MD

Neurology Physician in BALDWIN PARK, 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 · 446 beneficiaries · Neurology Physician avg: 1K
Industry payments
$123.88
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

QIAN ZHANG, MD filed 1,593 Medicare Part D claims in 2023 as a Neurology Physician in BALDWIN PARK, California.

2K
Part D claims, 2023
Likely
board-certified (heuristic)

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.

QIAN ZHANG, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

1,593 Top 19% higher than 81% 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%). This entry sits in this band. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 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

Board certification likely (heuristic — not verified)

QIAN ZHANG, MD 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).

What does the federal data show about QIAN ZHANG, MD?

Quality data not reported

NPI registry status

Active

Issued 12/08/2006

NPI 1427117050

Primary specialty

Neurology Physician

Mid-sized

19,866 US NPIs in this specialty

Medicare Part D claims

1,593 22% vs specialty avg

2023 prescription claims

Specialty avg: 1,309

Specialty distribution in California

How Neurology Physician compares to other specialties among California providers

California providers

Neurology Physician share within California

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Neurology 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).

QIAN ZHANG, MD appears in the CMS NPPES registry as a Neurology Physician provider holding MD credentials at 1011 BALDWIN PARK BLVD, BALDWIN PARK, CA, 91706, with a listed phone of (626) 851-1011. NPI 1427117050 was issued on 12/08/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ZHANG 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 1,593 prescription claims written by this provider, covering 446 Medicare beneficiaries and totaling roughly $308K 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.

Neurology Physician is a mid-sized specialty nationwide, with 19,866 enrolled providers across 54 states and an average of 1,309 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

1011 BALDWIN PARK BLVD
BALDWIN PARK, CA 91706

Provider Details

NPI 1427117050
Specialty Neurology Physician
Credentials MD
Gender Female
NPI Issued 12/08/2006

Hospital and facility affiliations

Facilities where QIAN ZHANG, MD 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.

SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP
BALDWIN PARK, 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 QIAN ZHANG, MD. Source: openpaymentsdata.cms.gov.

Total received

$124

Largest payer

Eisai 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 QIAN ZHANG, MD. To verify QIAN ZHANG, MD'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.

1,593
Total Claims
$308K
Total Drug Cost
446
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,400
Total Day Supply
130,746
Generic Drug Cost
$97K

Patient Demographics

Average Patient Age
75.1 years
Avg HCC Risk Score
1.59
Gender Split
59% female / 41% male
Age Distribution
<65: 42, 65-74: 154, 75-84: 178, 85+: 72

Top Prescribed Drugs (Medicare Part D)

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

What QIAN ZHANG, MD 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
Carbidopa-Levodopa
Carbidopa/Levodopa
264
Donepezil Hcl
153
Levetiracetam
149
Gabapentin
88
Pyridostigmine Bromide
69
Memantine Hcl
54
Carbamazepine Er
Carbamazepine
44
Pramipexole Dihydrochloride
Pramipexole Di-Hcl
44
Levetiracetam Er
Levetiracetam
42
Propranolol Hcl
41

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

Neurology Physician Overview

How QIAN ZHANG, MD fits within the Neurology Physician landscape nationally.

19,866
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider

QIAN ZHANG, MD's 1,593 claims are above the specialty average of 1,309.

Nearby Neurology Physician Providers in California

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

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

Frequently Asked Questions

What is QIAN ZHANG, MD's specialty?
QIAN ZHANG, MD specializes in Neurology Physician and practices in BALDWIN PARK, California. Credentials: MD.
How much does QIAN ZHANG, MD prescribe under Medicare Part D?
In 2023, QIAN ZHANG, MD wrote 1,593 Medicare Part D claims totaling $308K in drug costs for 446 beneficiaries.
Where is QIAN ZHANG, MD located?
QIAN ZHANG, MD is located at 1011 BALDWIN PARK BLVD, BALDWIN PARK, CA, 91706. Phone: (626) 851-1011.
What is QIAN ZHANG, MD's NPI number?
QIAN ZHANG, MD's National Provider Identifier (NPI) is 1427117050, issued on 12/08/2006.
How many Neurology Physician providers are there in the US?
There are 19,866 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does QIAN ZHANG, MD prescribe most often?
Based on 2023 Medicare Part D data, QIAN ZHANG, MD's most frequently prescribed drugs include Carbidopa-Levodopa, Donepezil Hcl, Levetiracetam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does QIAN ZHANG, MD accept Medicare?
QIAN ZHANG, MD appears in CMS Medicare data with 1,593 Part D claims and 446 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify QIAN ZHANG, MD's credentials?
QIAN ZHANG, MD's NPI is 1427117050 with credentials MD. 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