2026 NPPES data Dermatology Physician NPI 1407276884 M.D.
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MAY ZHANG, M.D.

Dermatology Physician in WAILUKU, Hawaii. 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
783
Medicare Part D claims · 263 beneficiaries · Dermatology Physician avg: 729
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: MAY ZHANG, M.D. is a Dermatology Physician ([object Object]) practicing in WAILUKU, Hawaii with a Medicare Part D prescribing footprint of 783 claims across 263 beneficiaries — 15% brand-name prescribing .

What stands out: MAY ZHANG, M.D. filed 783 Medicare Part D claims in 2023 across WAILUKU, Hawaii. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

MAY ZHANG, 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).

MAY ZHANG, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 04/23/2014

NPI 1407276884

Primary specialty

Dermatology Physician

Mid-sized

14,610 US NPIs in this specialty

Medicare Part D claims

783 7% vs specialty avg

2023 prescription claims

Specialty avg: 729

Specialty distribution in Hawaii

How Dermatology Physician compares to other specialties among Hawaii providers

Hawaii providers

Dermatology Physician share within Hawaii

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

Specialty board-certification context

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

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

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

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

MAY ZHANG, M.D. is a Dermatology Physician provider practicing in WAILUKU, Hawaii, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1407276884. 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.

MAY ZHANG, M.D. appears in the CMS NPPES registry as a Dermatology Physician provider holding M.D. credentials at 80 MAHALANI ST, WAILUKU, HI, 96793, with a listed phone of (808) 243-6000. NPI 1407276884 was issued on 04/23/2014. 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 783 prescription claims written by this provider, covering 263 Medicare beneficiaries and totaling roughly $304K 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.

Dermatology Physician is a mid-sized specialty nationwide, with 14,610 enrolled providers across 53 states and an average of 729 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

80 MAHALANI ST
WAILUKU, HI 96793

Provider Details

NPI 1407276884
Specialty Dermatology Physician
Credentials M.D.
Gender Female
NPI Issued 04/23/2014

Hospital and facility affiliations

Facilities where MAY ZHANG, 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.

HAWAII PERMANENTE MEDICAL GROUP INC
WAILUKU, HI

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

MAY ZHANG, M.D. — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 783 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.

783
Total Claims
$304K
Total Drug Cost
263
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
861
Total Day Supply
24,821
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$283K
Generic Drug Cost
$20K
Antibiotic Claims
25

Patient Demographics

Average Patient Age
74.2 years
Avg HCC Risk Score
1.03
Gender Split
50% female / 50% 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
Clobetasol Propionate
100
Fluorouracil
98
Calcipotriene
71
Triamcinolone Acetonide
62
Ketoconazole
56
Hydrocortisone
32
Mupirocin
27
Betamethasone Diprop Augmented
Betamethasone/Propylene Glyc
24
Doxycycline Monohydrate
22
Methotrexate
Methotrexate Sodium
22

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

Dermatology Physician Overview

How MAY ZHANG, M.D. fits within the Dermatology Physician landscape nationally.

14,610
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider

MAY ZHANG, M.D.'s 783 claims are above the specialty average of 729.

Nearby Dermatology Physician Providers in Hawaii

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

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

Frequently Asked Questions

What is MAY ZHANG, M.D.'s specialty?
MAY ZHANG, M.D. specializes in Dermatology Physician and practices in WAILUKU, Hawaii. Credentials: M.D..
How much does MAY ZHANG, M.D. prescribe under Medicare Part D?
In 2023, MAY ZHANG, M.D. wrote 783 Medicare Part D claims totaling $304K in drug costs for 263 beneficiaries.
Where is MAY ZHANG, M.D. located?
MAY ZHANG, M.D. is located at 80 MAHALANI ST, WAILUKU, HI, 96793. Phone: (808) 243-6000.
What is MAY ZHANG, M.D.'s NPI number?
MAY ZHANG, M.D.'s National Provider Identifier (NPI) is 1407276884, issued on 04/23/2014.
Does MAY ZHANG, M.D. prescribe more brand-name or generic drugs?
MAY ZHANG, M.D.'s prescribing is 15% brand-name and 85% generic drugs by claim count, with $283K in brand drug costs.
How many Dermatology Physician providers are there in the US?
There are 14,610 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does MAY ZHANG, M.D. prescribe most often?
Based on 2023 Medicare Part D data, MAY ZHANG, M.D.'s most frequently prescribed drugs include Clobetasol Propionate, Fluorouracil, Calcipotriene. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MAY ZHANG, M.D. accept Medicare?
MAY ZHANG, M.D. appears in CMS Medicare data with 783 Part D claims and 263 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MAY ZHANG, M.D.'s credentials?
MAY ZHANG, M.D.'s NPI is 1407276884 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