2026 NPPES data Orthopaedic Surgery of the Spine Physician NPI 1154522910 MD
Verify on CMS →

MICHAEL CHANG, MD

Orthopaedic Surgery of the Spine Physician in MESA, 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
124
Medicare Part D claims · 54 beneficiaries · Orthopaedic Surgery of the Spine Physician avg: 362
Industry payments
$80.7K
60 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: MICHAEL CHANG, MD is a Orthopaedic Surgery of the Spine Physician ([object Object]) practicing in MESA, Arizona with a Medicare Part D prescribing footprint of 124 claims across 54 beneficiaries . Industry payments of $80.7K across 60 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: MICHAEL CHANG, MD filed 124 Medicare Part D claims in 2023 across MESA, Arizona. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

MICHAEL CHANG, 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).

MICHAEL CHANG, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 05/30/2007

NPI 1154522910

Primary specialty

Orthopaedic Surgery of the Spine Physician

Niche

1,773 US NPIs in this specialty

Medicare Part D claims

124 66% vs specialty avg

2023 prescription claims

Specialty avg: 362

Specialty distribution in Arizona

How Orthopaedic Surgery of the Spine Physician compares to other specialties among Arizona providers

Arizona providers

Orthopaedic Surgery of the Spine Physician share within Arizona

1. Orthopaedic Surgery of the Spine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Orthopaedic Surgery of the Spine Physician share within Arizona

Specialty board-certification context

Estimated specialty board-certified rate — Orthopaedic Surgery of the Spine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Orthopaedic Surgery of the Spine Physician ABMS/AOA estimate

Est. board-certified rate (Orthopaedic Surgery of the Spine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Orthopaedic Surgery of the Spine 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).

MICHAEL CHANG, MD is a Orthopaedic Surgery of the Spine Physician provider practicing in MESA, Arizona, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1154522910. 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.

MICHAEL CHANG, MD appears in the CMS NPPES registry as a Orthopaedic Surgery of the Spine Physician provider holding MD credentials at 1462 S. DOBSON ROAD, MESA, AZ, 85202, with a listed phone of (480) 962-0071. NPI 1154522910 was issued on 05/30/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHANG 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 124 prescription claims written by this provider, covering 54 Medicare beneficiaries and totaling roughly $135K 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.

Orthopaedic Surgery of the Spine Physician is a narrow specialty nationwide, with 1,773 enrolled providers across 51 states and an average of 362 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

1462 S. DOBSON ROAD
MESA, AZ 85202

Provider Details

NPI 1154522910
Specialty Orthopaedic Surgery of the Spine Physician
Credentials MD
Gender Male
NPI Issued 05/30/2007

Hospital and facility affiliations

Facilities where MICHAEL CHANG, 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.

HONORHEALTH AMBULATORY
SCOTTSDALE, 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 MICHAEL CHANG, MD. Source: openpaymentsdata.cms.gov.

Total received

$80.7K

Largest payer

MiRus, LLC

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.

124
Total Claims
$135K
Total Drug Cost
54
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
147
Total Day Supply
4,001
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
71.3 years
Avg HCC Risk Score
1.46
Gender Split
63% female / 37% 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
Naproxen
31
Teriparatide
25
Celecoxib
23
Tymlos
Abaloparatide
14

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

Orthopaedic Surgery of the Spine Physician Overview

How MICHAEL CHANG, MD fits within the Orthopaedic Surgery of the Spine Physician landscape nationally.

1,773
Orthopaedic Surgery of the Spine Physician Providers in US
51
States with Orthopaedic Surgery of the Spine Physician
362
Avg Claims per Provider

MICHAEL CHANG, MD's 124 claims are below the specialty average of 362.

Nearby Orthopaedic Surgery of the Spine Physician Providers in Arizona

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

Compare Orthopaedic Surgery of the Spine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MICHAEL CHANG, MD's specialty?
MICHAEL CHANG, MD specializes in Orthopaedic Surgery of the Spine Physician and practices in MESA, Arizona. Credentials: MD.
How much does MICHAEL CHANG, MD prescribe under Medicare Part D?
In 2023, MICHAEL CHANG, MD wrote 124 Medicare Part D claims totaling $135K in drug costs for 54 beneficiaries.
Where is MICHAEL CHANG, MD located?
MICHAEL CHANG, MD is located at 1462 S. DOBSON ROAD, MESA, AZ, 85202. Phone: (480) 962-0071.
What is MICHAEL CHANG, MD's NPI number?
MICHAEL CHANG, MD's National Provider Identifier (NPI) is 1154522910, issued on 05/30/2007.
How many Orthopaedic Surgery of the Spine Physician providers are there in the US?
There are 1,773 Orthopaedic Surgery of the Spine Physician providers across 51 states in the US. The average Orthopaedic Surgery of the Spine Physician provider writes 362 Medicare Part D claims per year.
What drugs does MICHAEL CHANG, MD prescribe most often?
Based on 2023 Medicare Part D data, MICHAEL CHANG, MD's most frequently prescribed drugs include Naproxen, Teriparatide, Celecoxib. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MICHAEL CHANG, MD accept Medicare?
MICHAEL CHANG, MD appears in CMS Medicare data with 124 Part D claims and 54 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MICHAEL CHANG, MD's credentials?
MICHAEL CHANG, MD's NPI is 1154522910 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