2026 NPPES data Medical Physician Assistant NPI 1669878807
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ZHENG CHEN

Medical Physician Assistant in LANHAM, Maryland. 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
374
Medicare Part D claims · 159 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
83.581/100
▲ 0 pts above national avg 83.1 · [object Object]
Industry payments
$1.7K
60 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ZHENG CHEN reported a CMS MIPS final score of 83.581/100 — above the 83.1 national average — and filed 374 Medicare Part D claims in 2023.

83.581/100
MIPS score · +0 vs avg
374
Part D claims, 2023
85%
generic prescribing
$1.7K
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.

ZHENG CHEN's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

84 42nd percentile higher than 42% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

What does the federal data show about ZHENG CHEN?

Near national average

NPI registry status

Active

Issued 11/17/2014

NPI 1669878807

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

374 65% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

MIPS final score

83.581/100 0.48100000000000875% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Maryland

How Medical Physician Assistant compares to other specialties among Maryland providers

Maryland providers

Medical Physician Assistant share within Maryland

1. Medical Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Medical Physician Assistant share within Maryland

Medicare quality performance — MIPS

ZHENG CHEN's 2023 MIPS final score plotted against the Medical Physician Assistant national average

Near national average
MIPS Final Score
83.581/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Medical Physician Assistant) — 83.581/100 vs national avg 83.1

0%100%National avg83%83.6%
MIPS final score (Medical Physician Assistant) — 83.581/100 vs national avg 83.1

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).

ZHENG CHEN is a Medical Physician Assistant provider practicing in LANHAM, Maryland, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1669878807. 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.

ZHENG CHEN appears in the CMS NPPES registry as a Medical Physician Assistant provider at 8118 GOOD LUCK ROAD, LANHAM, MD, 20706, with a listed phone of (301) 552-8130. NPI 1669878807 was issued on 11/17/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHEN 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 374 prescription claims written by this provider, covering 159 Medicare beneficiaries and totaling roughly $223K in drug spend, split 15% brand-name and 85% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 83.581/100 for the 2023 performance year (Quality 75.1579, Cost 62.6456), compared with the national average of 83.1.

Medical Physician Assistant is a mid-sized specialty nationwide, with 40,527 enrolled providers across 55 states and an average of 1,077 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

8118 GOOD LUCK ROAD
LANHAM, MD 20706

Provider Details

NPI 1669878807
Specialty Medical Physician Assistant
Gender Female
NPI Issued 11/17/2014

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

83.581
Final Score
Avg: 83.1
75.1579
Quality
62.6456
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where ZHENG CHEN 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.

CHESAPEAKE DIGESTIVE ASSOCIATES, PC
COLUMBIA, MD

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 ZHENG CHEN. Source: openpaymentsdata.cms.gov.

Total received

$1.7K

Largest payer

ABBVIE 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.

Brand vs generic prescribing mix · Typical

ZHENG CHEN — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 374 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.

374
Total Claims
$223K
Total Drug Cost
159
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
740
Total Day Supply
20,142
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$205K
Generic Drug Cost
$19K
Antibiotic Claims
13

Patient Demographics

Average Patient Age
72.6 years
Avg HCC Risk Score
1.27
Gender Split
72% female / 28% male
Age Distribution
<65: 14, 65-74: 84, 75-84: 49, 85+: 12

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Omeprazole
66
Famotidine
63
Pantoprazole Sodium
25
Colestipol Hcl
24
Lansoprazole
20
Hydrocortisone
15
Gavilyte-G
"Peg3350/Sod Sulf
N/A
Sod Sulf-Potass Sulf-Mag Sulf
"Sodium
N/A

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

Medical Physician Assistant Overview

How ZHENG CHEN fits within the Medical Physician Assistant landscape nationally.

40,527
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider

ZHENG CHEN's 374 claims are below the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Maryland

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

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

Frequently Asked Questions

What is ZHENG CHEN's specialty?
ZHENG CHEN specializes in Medical Physician Assistant and practices in LANHAM, Maryland.
How much does ZHENG CHEN prescribe under Medicare Part D?
In 2023, ZHENG CHEN wrote 374 Medicare Part D claims totaling $223K in drug costs for 159 beneficiaries.
What is ZHENG CHEN's Medicare quality score?
ZHENG CHEN has a CMS MIPS Final Score of 83.581/100 (Quality: 75.1579, Cost: 62.6456). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is ZHENG CHEN located?
ZHENG CHEN is located at 8118 GOOD LUCK ROAD, LANHAM, MD, 20706. Phone: (301) 552-8130.
What is ZHENG CHEN's NPI number?
ZHENG CHEN's National Provider Identifier (NPI) is 1669878807, issued on 11/17/2014.
Does ZHENG CHEN prescribe more brand-name or generic drugs?
ZHENG CHEN's prescribing is 15% brand-name and 85% generic drugs by claim count, with $205K in brand drug costs.
How many Medical Physician Assistant providers are there in the US?
There are 40,527 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does ZHENG CHEN prescribe most often?
Based on 2023 Medicare Part D data, ZHENG CHEN's most frequently prescribed drugs include Omeprazole, Famotidine, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ZHENG CHEN accept Medicare?
ZHENG CHEN appears in CMS Medicare data with 374 Part D claims and 159 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ZHENG CHEN's credentials?
ZHENG CHEN's NPI is 1669878807. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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