NPI registry status
Active
2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1851477954 M.D.
Verify on CMS → Jonathan Chang, M.D.
Geriatric Medicine (Internal Medicine) Physician in Forest Hills, 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 4,161 in Geriatric Medicine (Internal Medicine) 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
4K
Medicare Part D claims · 133 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Industry payments
$697.05
21 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Jonathan Chang, M.D. filed 4,047 Medicare Part D claims in 2023 as a Geriatric Medicine (Internal Medicine) Physician in Forest Hills, New York.
- 4K
- Part D claims, 2023
- $697.05
- industry payments (Sunshine Act)
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.
Jonathan Chang, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
4,047 Top 8% higher than 92% of 1,370,886 prescribers
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-eligible specialty (heuristic, not verified)
Jonathan Chang, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Jonathan Chang, M.D.?
Quality data not reportedPrimary specialty
Geriatric Medicine (Internal Medicine) Physician
Medicare Part D claims
4,047 9% vs specialty avg
Specialty distribution in New York
How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among New York providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Geriatric Medicine (Internal Medicine) Physician. Verify directly:
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).
Jonathan Chang, M.D. appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding M.D. credentials at 6750 THORNTON PL APT 6H, Forest Hills, NY, 11375, with a listed phone of (917) 553-8246. NPI 1851477954 was issued on 10/31/2006.
Medicare Part D records for calendar year 2023 show 4,047 prescription claims written by this provider, covering 133 Medicare beneficiaries and totaling roughly $342K in drug spend, with an opioid prescribing rate of 0.8%.
Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 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
Provider Details
| NPI | 1851477954 |
|---|---|
| Specialty | Geriatric Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/31/2006 |
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 Jonathan Chang, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$697
Largest payer
Gilead Sciences, Inc.
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 - 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 Jonathan Chang, M.D.. To verify Jonathan Chang, M.D.'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
4,047
Total Claims
$342K
Total Drug Cost
133
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,051
- Total Day Supply
- 102,304
- Generic Drug Cost
- $94K
- Opioid Claims
- 32 (0.8% rate)
- Antibiotic Claims
- 66
Patient Demographics
- Average Patient Age
- 76.0 years
- Avg HCC Risk Score
- 2.49
- Gender Split
- 41% female / 59% male
- Age Distribution
- <65: 15, 65-74: 48, 75-84: 42, 85+: 28
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Jonathan Chang, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
189 claims
- Atorvastatin Calcium
Atorvastatin Calcium
168 claims
- Tamsulosin Hcl
Tamsulosin Hcl
128 claims
- Metformin Hcl
Metformin Hcl
126 claims
- Paroxetine Hcl
Paroxetine Hcl
121 claims
- Memantine Hcl
Memantine Hcl
119 claims
- Famotidine
Famotidine
109 claims
- Finasteride
Finasteride
103 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 189 |
| Atorvastatin Calcium | 168 |
| Tamsulosin Hcl | 128 |
| Metformin Hcl | 126 |
| Paroxetine Hcl | 121 |
| Memantine Hcl | 119 |
| Famotidine | 109 |
| Finasteride | 103 |
| Mirtazapine | 95 |
| Gabapentin | 92 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Geriatric Medicine (Internal Medicine) Physician in NY →
All providers in New York →
Compare specialties →
Geriatric Medicine (Internal Medicine) Physician Overview
How Jonathan Chang, M.D. fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.
4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider
Jonathan Chang, M.D.'s 4,047 claims are below the specialty average of 4,450.
Nearby Geriatric Medicine (Internal Medicine) 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.
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the New York medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Geriatric Medicine (Internal Medicine) Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Medical Specialties Explained
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Understanding Medicare Claims Data
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Frequently Asked Questions
What is Jonathan Chang, M.D.'s specialty? ▼
Jonathan Chang, M.D. specializes in Geriatric Medicine (Internal Medicine) Physician and practices in Forest Hills, New York. Credentials: M.D..
How much does Jonathan Chang, M.D. prescribe under Medicare Part D? ▼
In 2023, Jonathan Chang, M.D. wrote 4,047 Medicare Part D claims totaling $342K in drug costs for 133 beneficiaries.
Where is Jonathan Chang, M.D. located? ▼
Jonathan Chang, M.D. is located at 6750 THORNTON PL APT 6H, Forest Hills, NY, 11375. Phone: (917) 553-8246.
What is Jonathan Chang, M.D.'s NPI number? ▼
Jonathan Chang, M.D.'s National Provider Identifier (NPI) is 1851477954, issued on 10/31/2006.
Does Jonathan Chang, M.D. prescribe opioids? ▼
Yes, Jonathan Chang, M.D. had 32 opioid claims in 2023 with an opioid prescribing rate of 0.8%.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does Jonathan Chang, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Jonathan Chang, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Tamsulosin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jonathan Chang, M.D. accept Medicare? ▼
Jonathan Chang, M.D. appears in CMS Medicare data with 4,047 Part D claims and 133 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jonathan Chang, M.D.'s credentials? ▼
Jonathan Chang, M.D.'s NPI is 1851477954 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
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 (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
Compiled from official public sources by the PlainDoctor editorial team.