NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1962829127 M.D.
Verify on CMS → Eric Tien Yen Chyn, M.D.
Internal Medicine Physician in Newark, New Jersey.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,737 in 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
3K
Medicare Part D claims · 247 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
80%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.3/100
▼ 10 pts below national avg 83.1 · Mid-tier
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Eric Tien Yen Chyn, M.D. reported a CMS MIPS final score of 73.3/100 - below the 83.1 national average - and filed 2,895 Medicare Part D claims in 2023.
- 73.3/100
- MIPS score · -10 vs avg
- 3K
- Part D claims, 2023
- 80%
- 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.
Eric Tien Yen Chyn, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
73 11th percentile higher than 11% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Eric Tien Yen Chyn, M.D. sits
This provider among internal medicine physician peers
Across the 36,260 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Eric Tien Yen Chyn, M.D. writes more Part D claims than 71% of them and scores higher on MIPS quality than 11% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one internal medicine physician peer from a representative sample of 60; the gold marker is Eric Tien Yen Chyn, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Eric Tien Yen Chyn, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Eric Tien Yen Chyn, M.D.?
Below national averagePrimary specialty
Internal Medicine Physician
Medicare Part D claims
2,895 7% vs specialty avg
MIPS final score
73.3/100 9.8 pts vs avg
Specialty distribution in New Jersey
How Internal Medicine Physician compares to other specialties among New Jersey providers
Medicare quality performance, MIPS
Eric Tien Yen Chyn, M.D.'s 2023 MIPS final score plotted against the Internal Medicine Physician national average
- MIPS Final Score
- 73.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Internal Medicine Physician) - 73.3/100 vs national avg 83.1
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).
Eric Tien Yen Chyn, M.D. appears in the CMS NPPES registry as an Internal Medicine Physician provider holding M.D. credentials at 90 BERGEN ST STE 4200, Newark, NJ, 07103, with a listed phone of (973) 972-5672. NPI 1962829127 was issued on 03/26/2014.
Medicare Part D records for calendar year 2023 show 2,895 prescription claims written by this provider, covering 247 Medicare beneficiaries and totaling roughly $469K in drug spend, split 17% brand-name and 80% generic by claim count, with an opioid prescribing rate of 0.5%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.3/100 for the 2023 performance year (Quality 44.9, Cost 47.7), compared with the national average of 83.1.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,737 enrolled providers across 56 states and an average of 2,716 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 | 1962829127 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/26/2014 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.2773
Final Score
Avg: 83.1
44.8928
Quality
47.6995
Cost
83
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Eric Tien Yen Chyn, 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.
University Physician Associates OF New Jersey Inc
Newark, NJ
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Eric Tien Yen Chyn, M.D. - brand share 17.0%
Internal Medicine Physician average
17% brand-name claims vs 80% generic, on 2,895 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.
2,895
Total Claims
$469K
Total Drug Cost
247
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 6,156
- Total Day Supply
- 181,359
- Brand vs Generic
- 17% brand / 80% generic
- Brand Drug Cost
- $384K
- Generic Drug Cost
- $80K
- Opioid Claims
- 14 (0.5% rate)
- Antibiotic Claims
- 16
Patient Demographics
- Average Patient Age
- 71.9 years
- Avg HCC Risk Score
- 2.05
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 34, 65-74: 125, 75-84: 70, 85+: 18
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Eric Tien Yen Chyn, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
252 claims
- Amlodipine Besylate
Amlodipine Besylate
169 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
118 claims
- Diclofenac Sodium
Diclofenac Sodium
109 claims
- Lisinopril 93
Lisinopril
93 claims
- Losartan Potassium 90
Losartan Potassium
90 claims
- Carvedilol 82
Carvedilol
82 claims
- Nifedipine Er 67
Nifedipine Er
67 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 252 |
| Amlodipine Besylate | 169 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 118 |
| Diclofenac Sodium | 109 |
| Lisinopril | 93 |
| Losartan Potassium | 90 |
| Carvedilol | 82 |
| Nifedipine Er Nifedipine | 67 |
| Metformin Hcl | 66 |
| Famotidine | 61 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Eric Tien Yen Chyn, M.D. fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Eric Tien Yen Chyn, M.D.'s 2,895 claims are above the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in New Jersey
Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as Chyn.
Dr. Joseph Aaron
MD, FACP
Short Hills, NJ
Dr. Sirike Aasmaa
DO
Montville, NJ
Dr. Holly Abate Bersalona
M.D.
Sea Girt, NJ
Dr. Kaniz Zehra Abbas
MD
Trenton, NJ
Dr. Shahida Abbas
MD
Old Bridge, NJ
Compare Internal Medicine Physician nationally: see state-by-state distribution →
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 Jersey medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby 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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Frequently Asked Questions
What is Eric Tien Yen Chyn, M.D.'s specialty? ▼
Eric Tien Yen Chyn, M.D. specializes in Internal Medicine Physician and practices in Newark, New Jersey. Credentials: M.D..
How much does Eric Tien Yen Chyn, M.D. prescribe under Medicare Part D? ▼
In 2023, Eric Tien Yen Chyn, M.D. wrote 2,895 Medicare Part D claims totaling $469K in drug costs for 247 beneficiaries.
What is Eric Tien Yen Chyn, M.D.'s Medicare quality score? ▼
Eric Tien Yen Chyn, M.D. has a CMS MIPS Final Score of 73.3/100 (Quality: 44.9, Cost: 47.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Eric Tien Yen Chyn, M.D. located? ▼
Eric Tien Yen Chyn, M.D. is located at 90 BERGEN ST STE 4200, Newark, NJ, 07103. Phone: (973) 972-5672.
What is Eric Tien Yen Chyn, M.D.'s NPI number? ▼
Eric Tien Yen Chyn, M.D.'s National Provider Identifier (NPI) is 1962829127, issued on 03/26/2014.
Does Eric Tien Yen Chyn, M.D. prescribe more brand-name or generic drugs? ▼
Eric Tien Yen Chyn, M.D.'s prescribing is 17% brand-name and 80% generic drugs by claim count, with $384K in brand drug costs.
Does Eric Tien Yen Chyn, M.D. prescribe opioids? ▼
Yes, Eric Tien Yen Chyn, M.D. had 14 opioid claims in 2023 with an opioid prescribing rate of 0.5%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Eric Tien Yen Chyn, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Eric Tien Yen Chyn, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Eric Tien Yen Chyn, M.D. accept Medicare? ▼
Eric Tien Yen Chyn, M.D. appears in CMS Medicare data with 2,895 Part D claims and 247 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Eric Tien Yen Chyn, M.D.'s credentials? ▼
Eric Tien Yen Chyn, M.D.'s NPI is 1962829127 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.
- 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 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.
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 May 2026.