2026 NPPES data Neurology Physician NPI 1477791879 M.D., PH.D.
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KWAN NG, M.D., PH.D.

Neurology Physician in BALTIMORE, 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
115
Medicare Part D claims · 29 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$16.76
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

KWAN NG, M.D., PH.D. filed 115 Medicare Part D claims in 2023 as a Neurology Physician in BALTIMORE, Maryland, prescribing 87% generic.

115
Part D claims, 2023
87%
generic prescribing
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.

KWAN NG, M.D., PH.D.'s Medicare Part D volume vs every U.S. prescriber

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

115 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 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)

KWAN NG, M.D., PH.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).

What does the federal data show about KWAN NG, M.D., PH.D.?

Quality data not reported

NPI registry status

Active

Issued 01/23/2009

NPI 1477791879

Primary specialty

Neurology Physician

Mid-sized

19,866 US NPIs in this specialty

Medicare Part D claims

115 91% vs specialty avg

2023 prescription claims

Specialty avg: 1,309

Specialty distribution in Maryland

How Neurology Physician compares to other specialties among Maryland providers

Maryland providers

Neurology Physician share within Maryland

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

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).

KWAN NG, M.D., PH.D. appears in the CMS NPPES registry as a Neurology Physician provider holding M.D., PH.D. credentials at 601 N CAROLINE ST, BALTIMORE, MD, 21287, with a listed phone of (410) 955-8174. NPI 1477791879 was issued on 01/23/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NG 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 115 prescription claims written by this provider, covering 29 Medicare beneficiaries and totaling roughly $14K in drug spend, split 13% brand-name and 87% 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.

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

601 N CAROLINE ST
BALTIMORE, MD 21287

Provider Details

NPI 1477791879
Specialty Neurology Physician
Credentials M.D., PH.D.
Gender Male
NPI Issued 01/23/2009

Hospital and facility affiliations

Facilities where KWAN NG, M.D., PH.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.

REGENTS OF THE UNIV OF CA
SACRAMENTO, 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 KWAN NG, M.D., PH.D.. Source: openpaymentsdata.cms.gov.

Total received

$17

Largest payer

Medtronic, 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

KWAN NG, M.D., PH.D. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 115 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.

115
Total Claims
$14K
Total Drug Cost
29
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
230
Total Day Supply
6,823
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$11K
Generic Drug Cost
$3K

Patient Demographics

Average Patient Age
74.1 years
Avg HCC Risk Score
1.46
Gender Split
48% female / 52% male

Top Prescribed Drugs (Medicare Part D)

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

What KWAN NG, M.D., PH.D. 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
Gabapentin
25
Clopidogrel
Clopidogrel Bisulfate
17
Donepezil Hcl
17
Atorvastatin Calcium
11

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

Neurology Physician Overview

How KWAN NG, M.D., PH.D. 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

KWAN NG, M.D., PH.D.'s 115 claims are below the specialty average of 1,309.

Nearby Neurology Physician Providers in Maryland

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

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

Frequently Asked Questions

What is KWAN NG, M.D., PH.D.'s specialty?
KWAN NG, M.D., PH.D. specializes in Neurology Physician and practices in BALTIMORE, Maryland. Credentials: M.D., PH.D..
How much does KWAN NG, M.D., PH.D. prescribe under Medicare Part D?
In 2023, KWAN NG, M.D., PH.D. wrote 115 Medicare Part D claims totaling $14K in drug costs for 29 beneficiaries.
Where is KWAN NG, M.D., PH.D. located?
KWAN NG, M.D., PH.D. is located at 601 N CAROLINE ST, BALTIMORE, MD, 21287. Phone: (410) 955-8174.
What is KWAN NG, M.D., PH.D.'s NPI number?
KWAN NG, M.D., PH.D.'s National Provider Identifier (NPI) is 1477791879, issued on 01/23/2009.
Does KWAN NG, M.D., PH.D. prescribe more brand-name or generic drugs?
KWAN NG, M.D., PH.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $11K in brand drug costs.
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 KWAN NG, M.D., PH.D. prescribe most often?
Based on 2023 Medicare Part D data, KWAN NG, M.D., PH.D.'s most frequently prescribed drugs include Gabapentin, Clopidogrel, Donepezil Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KWAN NG, M.D., PH.D. accept Medicare?
KWAN NG, M.D., PH.D. appears in CMS Medicare data with 115 Part D claims and 29 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KWAN NG, M.D., PH.D.'s credentials?
KWAN NG, M.D., PH.D.'s NPI is 1477791879 with credentials M.D., PH.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