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2026 NPPES data Rheumatology Physician NPI 1851585798 MD
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Christine Hsieh, MD

Rheumatology 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 6,377 in Rheumatology 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
2K
Medicare Part D claims · 276 beneficiaries · Rheumatology Physician avg: 2K
MIPS score
94.1/100
▲ 11 pts above national avg 83.5 · Exceptional
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Christine Hsieh, MD reported a CMS MIPS final score of 94.1/100 - above the 83.5 national average - and filed 1,895 Medicare Part D claims in 2024.

94.1/100
MIPS score · +11 vs avg
2K
Part D claims, 2024
Likely
board-certified (heuristic)
≥73rd
pct among measured MIPS (lower-bound band)

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 Christine Hsieh, 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 1851585798), first enumerated 09/04/2007.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 1,895 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 94.1/100 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.

    Source: NUCC taxonomy + CMS participation heuristic

  • Reported

    Hospital affiliations

    1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.

    Source: CMS Care Compare

  • State context

    State board disciplinary context

    Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Christine Hsieh, MD's individual license status. Verify directly with the state medical board.

    Source: IDFPR 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 1851585798 · Rheumatology Physician

NPI-10 · ENUM-MID · TAX-MID · MIPS-ELITE · RX-MID · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1851585798
  • ENUM-MID 2007
  • TAX-MID 6K Rheumatology Physician
  • MIPS-ELITE 94.1/100
  • RX-MID 1,895
  • BOOK-THIN 267 in Illinois
  • PHOTO-FINISH Alexander Geevarghese · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Christine Hsieh, 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.

94 ≥ 73rd percentile 73% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). Below this entry. 90+: 189,403 measured providers (42%). This entry sits in this band. This provider 0 100 every measured MIPS clinician, bucketed by value

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 Christine Hsieh, MD sits

This provider among rheumatology physician peers

Across the 1,970 rheumatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Christine Hsieh, MD writes more Part D claims than 52% of them and scores higher on MIPS quality than 72% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.949.974.899.8Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 65Christine Hsieh, MD, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 72
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one rheumatology physician peer from a representative sample of 60; the gold marker is Christine Hsieh, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Christine Hsieh, MD 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 Christine Hsieh, MD?

High performer (top quartile)

NPI registry status

Active

Issued 09/04/2007

NPI 1851585798

Primary specialty

Rheumatology Physician

Mid-sized

6,377 US NPIs in this specialty

Medicare Part D claims

1,895 8% vs specialty avg

2024 prescription claims

Specialty avg: 2,058

MIPS final score

94.1/100 10.6 pts vs avg

Exceptional band

vs 83.5 national avg

Specialty distribution in Illinois

How Rheumatology Physician compares to other specialties among Illinois providers

Illinois providers
Clinical Social Worker5.2%Physical Therapist4.9%Mental Health Counselor4.5%Speech-Language Pathologist4.2%Student in an Organized Heal…4.1%Pharmacist4.1%Rheumatology Physician0.1%
Largest specialties in Illinois (% of in-state providers)

Medicare quality performance, MIPS

Christine Hsieh, MD's 2023 MIPS final score plotted against the Rheumatology Physician national average

High performer (top quartile)
MIPS Final Score
94.1/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%94.1%
MIPS final score (Rheumatology Physician) - 94.1/100 vs national avg 83.5
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

675 N SAINT CLAIR ST
Chicago, IL 60611
(312) 695-8628

Provider Details

NPI 1851585798
Specialty Rheumatology Physician
Credentials MD
Gender Female
NPI Issued 09/04/2007

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

94.1036
Final Score
Measured-score avg: 83.5
82.5938
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where Christine Hsieh, 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.

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 Christine Hsieh, MD. To verify Christine Hsieh, MD'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 2024.

1,895
Total Claims
$2.8M
Total Drug Cost
276
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,356.233
Total Day Supply
129,016
Generic Drug Cost
$64K
Opioid Claims
43 (2.3% rate)

Patient Demographics

Average Patient Age
71.3 years
Avg HCC Risk Score
1.63
Gender Split
78% female / 22% male
Age Distribution
<65: 34, 65-74: 143, 75-84: 82, 85+: 17

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Christine Hsieh, MD prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Methotrexate
Methotrexate Sodium
355
Hydroxychloroquine Sulfate
 230
Prednisone
 199
Humira(Cf) Pen
Adalimumab
75
Leflunomide
 71
Allopurinol
 61
Azathioprine
 60
Sulfasalazine
 55
Gabapentin
 51
Folic Acid
 50

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

More Rheumatology Physician in IL → All providers in Illinois → Compare specialties →

Rheumatology Physician Overview

How Christine Hsieh, MD fits within the Rheumatology Physician landscape nationally.

6,377
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,058
Avg Claims per Provider

Christine Hsieh, MD's 1,895 claims are below the specialty average of 2,058.

Nationwide Rheumatology Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Hsieh, both outside Illinois so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (94.1 here).

Alexander Geevarghese 94.1 IN Jean Lin 94.1 OH Kubra Bugdayli 94.1 OH Jamie Latos 94.1 WV

Same NPPES enumeration year (2007)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Nirupa Patel New Orleans, LA Dedri Ivory Vicksburg, MS Tareq Abou-Khamis Houston, TX Suong Tran Houston, TX

Nearby Rheumatology Physician Providers in Illinois

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

One of 267 Rheumatology Physician providers enrolled in Illinois, 5 are shown here.

Dr. Elaine Adams
MD
Maywood, IL
Dr. Emem Adolf-Ubokudom
M.D.
Chicago, IL
Dr. Shri Agrawal
M.D.
Chicago, IL
Dr. Umber Ahmad
DO
McHenry, IL
Saba Ahmed
Chicago, IL

Compare Rheumatology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is Christine Hsieh, MD's specialty? ▼
Christine Hsieh, MD specializes in Rheumatology Physician and practices in Chicago, Illinois. Credentials: MD.
How much does Christine Hsieh, MD prescribe under Medicare Part D? ▼
In 2024, Christine Hsieh, MD wrote 1,895 Medicare Part D claims totaling $2.8M in drug costs for 276 beneficiaries.
What is Christine Hsieh, MD's Medicare quality score? ▼
Christine Hsieh, MD has a CMS MIPS Final Score of 94.1/100 (Quality: 82.6). 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 Christine Hsieh, MD located? ▼
Christine Hsieh, MD is located at 675 N SAINT CLAIR ST, Chicago, IL, 60611. Phone: (312) 695-8628.
What is Christine Hsieh, MD's NPI number? ▼
Christine Hsieh, MD's National Provider Identifier (NPI) is 1851585798, issued on 09/04/2007.
Does Christine Hsieh, MD prescribe opioids? ▼
Yes, Christine Hsieh, MD had 43 opioid claims in 2024 with an opioid prescribing rate of 2.3%.
How many Rheumatology Physician providers are there in the US? ▼
There are 6,377 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,058 Medicare Part D claims per year.
What drugs does Christine Hsieh, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Christine Hsieh, MD's most frequently prescribed drugs include Methotrexate, Hydroxychloroquine Sulfate, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Christine Hsieh, MD accept Medicare? ▼
Christine Hsieh, MD appears in CMS Medicare data with 1,895 Part D claims and 276 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christine Hsieh, MD's credentials? ▼
Christine Hsieh, MD's NPI is 1851585798 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

Compiled from official public sources by the editorial process.

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.