2026 NPPES data Procedural Dermatology Physician NPI 1841223583 M.D., J.D., LL.M.
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NOR CHIAO, M.D., J.D., LL.M.

Procedural Dermatology Physician in PHOENIX, Arizona. 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
255
Medicare Part D claims · 148 beneficiaries · Procedural Dermatology Physician avg: 664
Industry payments
$644.11
13 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: NOR CHIAO, M.D., J.D., LL.M. is a Procedural Dermatology Physician ([object Object]) practicing in PHOENIX, Arizona with a Medicare Part D prescribing footprint of 255 claims across 148 beneficiaries . Industry payments of $644.11 across 13 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: NOR CHIAO, M.D., J.D., LL.M. filed 255 Medicare Part D claims in 2023 across PHOENIX, Arizona. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

NOR CHIAO, M.D., J.D., LL.M. 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).

NOR CHIAO, M.D., J.D., LL.M. at a glance

Quality data not reported

NPI registry status

Active

Issued 07/08/2006

NPI 1841223583

Primary specialty

Procedural Dermatology Physician

Niche

679 US NPIs in this specialty

Medicare Part D claims

255 62% vs specialty avg

2023 prescription claims

Specialty avg: 664

Specialty distribution in Arizona

How Procedural Dermatology Physician compares to other specialties among Arizona providers

Arizona providers

Procedural Dermatology Physician share within Arizona

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

Specialty board-certification context

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

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

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

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

NOR CHIAO, M.D., J.D., LL.M. is a Procedural Dermatology Physician provider practicing in PHOENIX, Arizona, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D., J.D., LL.M.. NPI: 1841223583. 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.

NOR CHIAO, M.D., J.D., LL.M. appears in the CMS NPPES registry as a Procedural Dermatology Physician provider holding M.D., J.D., LL.M. credentials at 9520 W PALM LN STE 115, PHOENIX, AZ, 85037, with a listed phone of (480) 556-0446. NPI 1841223583 was issued on 07/08/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHIAO 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 255 prescription claims written by this provider, covering 148 Medicare beneficiaries and totaling roughly $6K 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.

Procedural Dermatology Physician is a narrow specialty nationwide, with 679 enrolled providers across 48 states and an average of 664 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

9520 W PALM LN STE 115
PHOENIX, AZ 85037

Provider Details

NPI 1841223583
Specialty Procedural Dermatology Physician
Credentials M.D., J.D., LL.M.
Gender Female
NPI Issued 07/08/2006

Hospital and facility affiliations

Facilities where NOR CHIAO, M.D., J.D., LL.M. 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.

EPIPHANY DERMATOLOGY OF ARIZONA LLC
TUCSON, AZ

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 NOR CHIAO, M.D., J.D., LL.M.. Source: openpaymentsdata.cms.gov.

Total received

$644

Largest payer

GENZYME CORPORATION

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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

255
Total Claims
$6K
Total Drug Cost
148
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
268
Total Day Supply
6,147
Generic Drug Cost
$6K
Antibiotic Claims
37

Patient Demographics

Average Patient Age
72.0 years
Avg HCC Risk Score
1.05
Gender Split
53% female / 47% male
Age Distribution
<65: 18, 65-74: 67, 75-84: 52, 85+: 11

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Mupirocin
87
Ketoconazole
55
Doxycycline Monohydrate
22
Triamcinolone Acetonide
19
Cephalexin
13
Hydrocortisone
13

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

Procedural Dermatology Physician Overview

How NOR CHIAO, M.D., J.D., LL.M. fits within the Procedural Dermatology Physician landscape nationally.

679
Procedural Dermatology Physician Providers in US
48
States with Procedural Dermatology Physician
664
Avg Claims per Provider

NOR CHIAO, M.D., J.D., LL.M.'s 255 claims are below the specialty average of 664.

Nearby Procedural Dermatology Physician Providers in Arizona

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

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

Frequently Asked Questions

What is NOR CHIAO, M.D., J.D., LL.M.'s specialty?
NOR CHIAO, M.D., J.D., LL.M. specializes in Procedural Dermatology Physician and practices in PHOENIX, Arizona. Credentials: M.D., J.D., LL.M..
How much does NOR CHIAO, M.D., J.D., LL.M. prescribe under Medicare Part D?
In 2023, NOR CHIAO, M.D., J.D., LL.M. wrote 255 Medicare Part D claims totaling $6K in drug costs for 148 beneficiaries.
Where is NOR CHIAO, M.D., J.D., LL.M. located?
NOR CHIAO, M.D., J.D., LL.M. is located at 9520 W PALM LN STE 115, PHOENIX, AZ, 85037. Phone: (480) 556-0446.
What is NOR CHIAO, M.D., J.D., LL.M.'s NPI number?
NOR CHIAO, M.D., J.D., LL.M.'s National Provider Identifier (NPI) is 1841223583, issued on 07/08/2006.
How many Procedural Dermatology Physician providers are there in the US?
There are 679 Procedural Dermatology Physician providers across 48 states in the US. The average Procedural Dermatology Physician provider writes 664 Medicare Part D claims per year.
What drugs does NOR CHIAO, M.D., J.D., LL.M. prescribe most often?
Based on 2023 Medicare Part D data, NOR CHIAO, M.D., J.D., LL.M.'s most frequently prescribed drugs include Mupirocin, Ketoconazole, Doxycycline Monohydrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NOR CHIAO, M.D., J.D., LL.M. accept Medicare?
NOR CHIAO, M.D., J.D., LL.M. appears in CMS Medicare data with 255 Part D claims and 148 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NOR CHIAO, M.D., J.D., LL.M.'s credentials?
NOR CHIAO, M.D., J.D., LL.M.'s NPI is 1841223583 with credentials M.D., J.D., LL.M.. 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