NPI registry status
Active
2026 NPPES data Hepatology Physician NPI 1689038911 MD, MS
Verify on CMS → Sarang Thaker, MD, MS
Hepatology Physician in Chicago, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 282 in Hepatology 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
432
Medicare Part D claims · 72 beneficiaries · Hepatology Physician avg: 803
MIPS score
94.1/100
▲ 11 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Sarang Thaker, MD, MS reported a CMS MIPS final score of 94.1/100 - above the 83.1 national average - and filed 432 Medicare Part D claims in 2023.
- 94.1/100
- MIPS score · +11 vs avg
- 432
- Part D claims, 2023
- 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.
Sarang Thaker, MD, MS's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
94 Top 25% higher than 75% 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 Sarang Thaker, MD, MS sits
This provider among hepatology physician peers
Across the 95 hepatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Sarang Thaker, MD, MS writes more Part D claims than 44% of them and scores higher on MIPS quality than 68% - placing this provider in the lower-volume, high-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 hepatology physician peer from a representative sample of 60; the gold marker is Sarang Thaker, MD, MS. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Sarang Thaker, MD, MS 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 Sarang Thaker, MD, MS?
High performer (top quartile)Primary specialty
Hepatology Physician
Medicare Part D claims
432 46% vs specialty avg
MIPS final score
94.1/100 11 pts vs avg
Specialty distribution in Illinois
How Hepatology Physician compares to other specialties among Illinois providers
Medicare quality performance, MIPS
Sarang Thaker, MD, MS's 2023 MIPS final score plotted against the Hepatology Physician national average
- MIPS Final Score
- 94.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Hepatology Physician) - 94.1/100 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).
Sarang Thaker, MD, MS appears in the CMS NPPES registry as a Hepatology Physician provider holding MD, MS credentials at 259 E ERIE ST STE 1600, Chicago, IL, 60611, with a listed phone of (312) 695-4837. NPI 1689038911 was issued on 04/13/2016.
Medicare Part D records for calendar year 2023 show 432 prescription claims written by this provider, covering 72 Medicare beneficiaries and totaling roughly $278K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 94.1/100 for the 2023 performance year (Quality 82.6), compared with the national average of 83.1.
Hepatology Physician is a narrow specialty nationwide, with 282 enrolled providers across 36 states and an average of 803 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 | 1689038911 |
|---|---|
| Specialty | Hepatology Physician |
| Credentials | MD, MS |
| Gender | Male |
| NPI Issued | 04/13/2016 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
94.1036
Final Score
Avg: 83.1
82.5938
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Sarang Thaker, MD, MS 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.
Central Dupage Physician Group
Winfield, IL
Northwestern Medical Faculty Foundation
Chicago, IL
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Illinois IDFPR 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 ~42K Illinois medical licensees in 2023 - they are NOT specific to Sarang Thaker, MD, MS. To verify Sarang Thaker, MD, MS's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR 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 Illinois 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.
432
Total Claims
$278K
Total Drug Cost
72
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 734
- Total Day Supply
- 20,913
- Generic Drug Cost
- $48K
- Antibiotic Claims
- 38
Patient Demographics
- Average Patient Age
- 68.1 years
- Avg HCC Risk Score
- 3.15
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 18, 65-74: 44, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Sarang Thaker, MD, MS prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ursodiol
Ursodiol
38 claims
- Sulfamethoxazole-T…
Sulfamethoxazole-Trimethoprim
26 claims
- Tacrolimus
Tacrolimus
26 claims
- Furosemide
Furosemide
24 claims
- Carvedilol
Carvedilol
23 claims
- Atorvastatin Calcium
Atorvastatin Calcium
19 claims
- Lactulose
Lactulose
19 claims
- Vemlidy
Vemlidy
16 claims
| Drug | Claims |
|---|---|
| Ursodiol | 38 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 26 |
| Tacrolimus | 26 |
| Furosemide | 24 |
| Carvedilol | 23 |
| Atorvastatin Calcium | 19 |
| Lactulose | 19 |
| Vemlidy Tenofovir Alafenamide | 16 |
| Rosuvastatin Calcium | 14 |
| Spironolactone | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hepatology Physician Overview
How Sarang Thaker, MD, MS fits within the Hepatology Physician landscape nationally.
282
Hepatology Physician Providers in US
36
States with Hepatology Physician
803
Avg Claims per Provider
Sarang Thaker, MD, MS's 432 claims are below the specialty average of 803.
Nearby Hepatology Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Thaker.
Dr. Estella Alonso
M.D.
Chicago, IL
Dr. Andrea Brown
APRN, CNP
Chicago, IL
Dr. Scott Cotler
MD
Maywood, IL
Dr. Andres Duarte
MD
Chicago, IL
Dr. Daniel Ganger
MD
Chicago, IL
Compare Hepatology 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 Illinois medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hepatology 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Illinois
Frequently Asked Questions
What is Sarang Thaker, MD, MS's specialty? ▼
Sarang Thaker, MD, MS specializes in Hepatology Physician and practices in Chicago, Illinois. Credentials: MD, MS.
How much does Sarang Thaker, MD, MS prescribe under Medicare Part D? ▼
In 2023, Sarang Thaker, MD, MS wrote 432 Medicare Part D claims totaling $278K in drug costs for 72 beneficiaries.
What is Sarang Thaker, MD, MS's Medicare quality score? ▼
Sarang Thaker, MD, MS has a CMS MIPS Final Score of 94.1/100 (Quality: 82.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Sarang Thaker, MD, MS located? ▼
Sarang Thaker, MD, MS is located at 259 E ERIE ST STE 1600, Chicago, IL, 60611. Phone: (312) 695-4837.
What is Sarang Thaker, MD, MS's NPI number? ▼
Sarang Thaker, MD, MS's National Provider Identifier (NPI) is 1689038911, issued on 04/13/2016.
How many Hepatology Physician providers are there in the US? ▼
There are 282 Hepatology Physician providers across 36 states in the US. The average Hepatology Physician provider writes 803 Medicare Part D claims per year.
What drugs does Sarang Thaker, MD, MS prescribe most often? ▼
Based on 2023 Medicare Part D data, Sarang Thaker, MD, MS's most frequently prescribed drugs include Ursodiol, Sulfamethoxazole-Trimethoprim, Tacrolimus. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sarang Thaker, MD, MS accept Medicare? ▼
Sarang Thaker, MD, MS appears in CMS Medicare data with 432 Part D claims and 72 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sarang Thaker, MD, MS's credentials? ▼
Sarang Thaker, MD, MS's NPI is 1689038911 with credentials MD, MS. 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.