2026 NPPES data Cardiovascular Disease Physician NPI 1922441351 M.D.
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PATRICK CHANG, M.D.

Cardiovascular Disease Physician in ORLANDO, Florida. 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
779
Medicare Part D claims · 139 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$325.11
4 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

PATRICK CHANG, M.D. filed 779 Medicare Part D claims in 2023 as a Cardiovascular Disease Physician in ORLANDO, Florida, prescribing 79% generic.

779
Part D claims, 2023
79%
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.

PATRICK CHANG, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

779 Top 29% higher than 71% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). This entry sits in this band. 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)

PATRICK CHANG, 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).

What does the federal data show about PATRICK CHANG, M.D.?

Quality data not reported

NPI registry status

Active

Issued 04/16/2013

NPI 1922441351

Primary specialty

Cardiovascular Disease Physician

Mid-sized

24,795 US NPIs in this specialty

Medicare Part D claims

779 74% vs specialty avg

2023 prescription claims

Specialty avg: 3,033

Specialty distribution in Florida

How Cardiovascular Disease Physician compares to other specialties among Florida providers

Florida providers

Cardiovascular Disease Physician share within Florida

1. Cardiovascular Disease Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Cardiovascular Disease Physician share within Florida

Specialty board-certification context

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

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

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

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

PATRICK CHANG, M.D. appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding M.D. credentials at 1222 S ORANGE AVE FL 4, ORLANDO, FL, 32806, with a listed phone of (321) 841-6444. NPI 1922441351 was issued on 04/16/2013. 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 779 prescription claims written by this provider, covering 139 Medicare beneficiaries and totaling roughly $201K in drug spend, split 21% brand-name and 79% 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.

Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 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

1222 S ORANGE AVE FL 4
ORLANDO, FL 32806

Provider Details

NPI 1922441351
Specialty Cardiovascular Disease Physician
Credentials M.D.
Gender Male
NPI Issued 04/16/2013

Hospital and facility affiliations

Facilities where PATRICK CHANG, 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.

ORLANDO HEALTH MEDICAL GROUP INC
ORLANDO, FL

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 PATRICK CHANG, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$325

Largest payer

Edwards Lifesciences 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.

License & disciplinary context — Florida FLDOH 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~75K Florida medical licensees in 2023 — they are NOT specific to PATRICK CHANG, M.D.. To verify PATRICK CHANG, M.D.'s current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases

FLDOH publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

PATRICK CHANG, M.D. — brand share 21.0%
Specialty average (est.)

21% brand-name claims vs 79% generic, on 779 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.

779
Total Claims
$201K
Total Drug Cost
139
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,063
Total Day Supply
61,769
Brand vs Generic
21% brand / 79% generic
Brand Drug Cost
$174K
Generic Drug Cost
$26K

Patient Demographics

Average Patient Age
73.0 years
Avg HCC Risk Score
1.62
Gender Split
42% female / 58% male

Top Prescribed Drugs (Medicare Part D)

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

What PATRICK CHANG, M.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
Atorvastatin Calcium
86
Eliquis
Apixaban
71
Amlodipine Besylate
57
Carvedilol
52
Lisinopril
37
Rosuvastatin Calcium
35
Metoprolol Succinate
34
Losartan Potassium
31
Hydrochlorothiazide
27
Repatha Sureclick
Evolocumab
25

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

Cardiovascular Disease Physician Overview

How PATRICK CHANG, M.D. fits within the Cardiovascular Disease Physician landscape nationally.

24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider

PATRICK CHANG, M.D.'s 779 claims are below the specialty average of 3,033.

Nearby Cardiovascular Disease Physician Providers in Florida

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

Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is PATRICK CHANG, M.D.'s specialty?
PATRICK CHANG, M.D. specializes in Cardiovascular Disease Physician and practices in ORLANDO, Florida. Credentials: M.D..
How much does PATRICK CHANG, M.D. prescribe under Medicare Part D?
In 2023, PATRICK CHANG, M.D. wrote 779 Medicare Part D claims totaling $201K in drug costs for 139 beneficiaries.
Where is PATRICK CHANG, M.D. located?
PATRICK CHANG, M.D. is located at 1222 S ORANGE AVE FL 4, ORLANDO, FL, 32806. Phone: (321) 841-6444.
What is PATRICK CHANG, M.D.'s NPI number?
PATRICK CHANG, M.D.'s National Provider Identifier (NPI) is 1922441351, issued on 04/16/2013.
Does PATRICK CHANG, M.D. prescribe more brand-name or generic drugs?
PATRICK CHANG, M.D.'s prescribing is 21% brand-name and 79% generic drugs by claim count, with $174K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US?
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does PATRICK CHANG, M.D. prescribe most often?
Based on 2023 Medicare Part D data, PATRICK CHANG, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Eliquis, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does PATRICK CHANG, M.D. accept Medicare?
PATRICK CHANG, M.D. appears in CMS Medicare data with 779 Part D claims and 139 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify PATRICK CHANG, M.D.'s credentials?
PATRICK CHANG, M.D.'s NPI is 1922441351 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