NPI registry status
Active
2026 NPPES data Hospitalist Physician NPI 1558868752 MD
Verify on CMS → Anna Chang, MD
Hospitalist Physician in New Hyde Park, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 17,950 in Hospitalist Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
72
Medicare Part D claims · 26 beneficiaries · Hospitalist Physician avg: 940
Generic prescribing
38%
generic claims · 63% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
93.3/100
▲ 10 pts above national avg 83.5 · Exceptional
Industry payments
$1.3K
3 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Anna Chang, MD reported a CMS MIPS final score of 93.3/100 - above the 83.5 national average - and filed 72 Medicare Part D claims in 2024.
- 93.3/100
- MIPS score · +10 vs avg
- 72
- Part D claims, 2024
- 38%
- 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.
Federal trust snapshot
What official records show about Anna Chang, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1558868752), first enumerated 04/12/2018.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 72 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 93.3/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$1.3K in reported industry payments (3 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
New York statewide board action statistics are published annually — these figures describe aggregate state activity, not Anna Chang, MD's individual license status. Verify directly with the state medical board.
Source: NYSBPMC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1558868752 · Hospitalist Physician
NPI-10 · ENUM-RECENT · TAX-MID · MIPS-ABOVE · RX-TRACE · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1558868752
- ENUM-RECENT 2018
- TAX-MID 18K Hospitalist Physician
- MIPS-ABOVE 93.3/100
- RX-TRACE 72
- BOOK-LIGHT 1,316 in New York
- PHOTO-FINISH Adam Ackerman · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Chang · this pro…
Chang · this provider
93.3 MIPS pts
- Rohan Bhojwani ·…
Rohan Bhojwani
93.3 MIPS pts
- Adam Ackerman · …
Adam Ackerman
93.3 MIPS pts
- Mhd Yassin Al Mo…
Mhd Yassin Al Mouslmani
93.3 MIPS pts
- Elena Balica · n…
Elena Balica
93.3 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Anna Chang, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
93 ≥ 69th percentile 69% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Anna Chang, MD sits
This provider among hospitalist physician peers
Across the 4,317 hospitalist physician providers who report both Medicare Part D prescribing and a MIPS quality score, Anna Chang, MD writes more Part D claims than 17% of them and scores higher on MIPS quality than 65% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one hospitalist physician peer from a representative sample of 60; the gold marker is Anna Chang, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Anna Chang, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations - 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 Anna Chang, MD?
High performer (top quartile)Primary specialty
Hospitalist Physician
Medicare Part D claims
72 92% vs specialty avg
MIPS final score
93.3/100 9.8 pts vs avg
Specialty distribution in New York
How Hospitalist Physician compares to other specialties among New York providers
Medicare quality performance, MIPS
Anna Chang, MD's 2023 MIPS final score plotted against the Hospitalist Physician national average
- MIPS Final Score
- 93.3/100
- vs 83.5 national avg · 2023 performance year
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1558868752 |
|---|---|
| Specialty | Hospitalist Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 04/12/2018 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
93.2757
Final Score
Measured-score avg: 83.5
81.7219
Quality
78.0315
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Anna 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.
North Shore-Lij Medical PC
New Hyde Park, NY
Northeast Medical Group Inc
Bridgeport, CT
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 Anna Chang, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.3K
Largest payer
ZOLL Respicardia, Inc.
Most common payment type
Travel and Lodging
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 - New York NYSBPMC 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 ~100K New York medical licensees in 2023 - they are NOT specific to Anna Chang, MD. To verify Anna Chang, MD's current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC 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 New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Brand-heavy
Anna Chang, MD - brand share 63.0%
Hospitalist Physician average
63% brand-name claims vs 38% generic, on 72 2024 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 2024.
72
Total Claims
$15K
Total Drug Cost
26
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 89.333
- Total Day Supply
- 2,603
- Brand vs Generic
- 63% brand / 38% generic
- Brand Drug Cost
- $14K
- Generic Drug Cost
- $563
Patient Demographics
- Average Patient Age
- 71.2 years
- Avg HCC Risk Score
- 2.66
- Gender Split
- 54% female / 46% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Budesonide-Formoterol Fumarate Budesonide/Formoterol Fumarate | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hospitalist Physician Overview
How Anna Chang, MD fits within the Hospitalist Physician landscape nationally.
17,950
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
940
Avg Claims per Provider
Anna Chang, MD's 72 claims are below the specialty average of 940.
Nationwide Hospitalist Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Chang, both outside New York so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (93.3 here).
Same NPPES enumeration year (2018)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Hospitalist Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Chang.
One of 1,316 Hospitalist Physician providers enrolled in New York, 5 are shown here.
Dr. Farrukh Abbas
MD
Rochester, NY
Dr. Hassan Abbas
M.D.
Rochester, NY
Dr. Suhail Abbasi
MD,FACP,FHM,FRCP
Batavia, NY
Fatmaalzahraa Abdelqader
New York, NY
Dr. Abdullah Abdullah
MD
Rochester, NY
Compare Hospitalist Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Anna Chang, MD's specialty? ▼
Anna Chang, MD specializes in Hospitalist Physician and practices in New Hyde Park, New York. Credentials: MD.
How much does Anna Chang, MD prescribe under Medicare Part D? ▼
In 2024, Anna Chang, MD wrote 72 Medicare Part D claims totaling $15K in drug costs for 26 beneficiaries.
What is Anna Chang, MD's Medicare quality score? ▼
Anna Chang, MD has a CMS MIPS Final Score of 93.3/100 (Quality: 81.7). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Anna Chang, MD located? ▼
Anna Chang, MD is located at 410 LAKEVILLE RD, New Hyde Park, NY, 11042. Phone: (646) 409-4963.
What is Anna Chang, MD's NPI number? ▼
Anna Chang, MD's National Provider Identifier (NPI) is 1558868752, issued on 04/12/2018.
Does Anna Chang, MD prescribe more brand-name or generic drugs? ▼
Anna Chang, MD's prescribing is 63% brand-name and 38% generic drugs by claim count, with $14K in brand drug costs.
How many Hospitalist Physician providers are there in the US? ▼
There are 17,950 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 940 Medicare Part D claims per year.
What drugs does Anna Chang, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Anna Chang, MD's most frequently prescribed drugs include Budesonide-Formoterol Fumarate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Anna Chang, MD accept Medicare? ▼
Anna Chang, MD appears in CMS Medicare data with 72 Part D claims and 26 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Anna Chang, MD's credentials? ▼
Anna Chang, MD's NPI is 1558868752 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
View source datasets and methodology notes
- 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 (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.