NPI registry status
Active
2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1346290707 MD
Verify on CMS → Rahmawati Sih, MD
Geriatric Medicine (Internal Medicine) Physician in Burr Ridge, 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 4,215 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
19K
Medicare Part D claims · 446 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
89%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$397.03
15 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Rahmawati Sih, MD filed 19,198 Medicare Part D claims in 2024 as a Geriatric Medicine (Internal Medicine) Physician in Burr Ridge, Illinois, prescribing 89% generic.
- 19K
- Part D claims, 2024
- 89%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥98th
- pct by Part D claim volume (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 Rahmawati Sih, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1346290707), first enumerated 05/10/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 19,198 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- 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
$397.03 in reported industry payments (15 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
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Rahmawati Sih, 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 1346290707 · Geriatric Medicine (Internal Medicine) Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-HEAVY · BOOK-THIN · PHOTO-ENUM
- NPI-10 1346290707
- ENUM-LEGACY 2006
- TAX-NARROW 4,215
- RX-HEAVY 19K claims
- BOOK-THIN 155 in Illinois
- PHOTO-ENUM Lisa Marr · 2006
Rahmawati Sih, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
19,198 ≥ 98th percentile 98% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Rahmawati Sih, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Rahmawati Sih, MD?
Quality data not reportedPrimary specialty
Geriatric Medicine (Internal Medicine) Physician
Medicare Part D claims
19,198 334% vs specialty avg
Specialty distribution in Illinois
How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Illinois 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).
Practice Address
Provider Details
| NPI | 1346290707 |
|---|---|
| Specialty | Geriatric Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/10/2006 |
Hospital and facility affiliations
Facilities where Rahmawati Sih, 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.
Dupage Medical Group Ltd
Schaumburg, IL
Select Rehabilitation, LLC
Glenview, 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).
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 Rahmawati Sih, MD. Source: openpaymentsdata.cms.gov.
Total received
$397
Largest payer
Eisai 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 - 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 Rahmawati Sih, MD. To verify Rahmawati Sih, 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.
Brand vs generic prescribing mix · Typical
Rahmawati Sih, MD - brand share 10.0%
Geriatric Medicine (Internal Medicine) Physician average
10% brand-name claims vs 89% generic, on 19,198 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.
19,198
Total Claims
$984K
Total Drug Cost
446
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 22,925.467
- Total Day Supply
- 446,922
- Brand vs Generic
- 10% brand / 89% generic
- Brand Drug Cost
- $685K
- Generic Drug Cost
- $289K
- Opioid Claims
- 252 (1.3% rate)
- Antibiotic Claims
- 394
Patient Demographics
- Average Patient Age
- 86.4 years
- Avg HCC Risk Score
- 1.96
- Gender Split
- 74% female / 26% male
- Age Distribution
- <65: 0, 65-74: 29, 75-84: 138, 85+: 279
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Rahmawati Sih, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Levothyroxine Sodium
Levothyroxine Sodium
914 claims
- Atorvastatin Calcium
Atorvastatin Calcium
820 claims
- Escitalopram Oxalate
Escitalopram Oxalate
723 claims
- Eliquis
Eliquis
720 claims
- Amlodipine Besylate
Amlodipine Besylate
685 claims
- Furosemide
Furosemide
620 claims
- Memantine Hcl
Memantine Hcl
600 claims
- Gabapentin
Gabapentin
558 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 914 |
| Atorvastatin Calcium | 820 |
| Escitalopram Oxalate | 723 |
| Eliquis Apixaban | 720 |
| Amlodipine Besylate | 685 |
| Furosemide | 620 |
| Memantine Hcl | 600 |
| Gabapentin | 558 |
| Metoprolol Succinate | 558 |
| Losartan Potassium | 506 |
* 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 IL →
All providers in Illinois →
Compare specialties →
Geriatric Medicine (Internal Medicine) Physician Overview
How Rahmawati Sih, MD fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.
4,215
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,420
Avg Claims per Provider
Rahmawati Sih, MD's 19,198 claims are above the specialty average of 4,420.
Nationwide Geriatric Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Sih, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Sih.
One of 155 Geriatric Medicine (Internal Medicine) Physician providers enrolled in Illinois, 5 are shown here.
Frequently Asked Questions
What is Rahmawati Sih, MD's specialty? ▼
Rahmawati Sih, MD specializes in Geriatric Medicine (Internal Medicine) Physician and practices in Burr Ridge, Illinois. Credentials: MD.
How much does Rahmawati Sih, MD prescribe under Medicare Part D? ▼
In 2024, Rahmawati Sih, MD wrote 19,198 Medicare Part D claims totaling $984K in drug costs for 446 beneficiaries.
Where is Rahmawati Sih, MD located? ▼
Rahmawati Sih, MD is located at 6101 S COUNTY LINE RD, Burr Ridge, IL, 60527. Phone: (630) 686-9000.
What is Rahmawati Sih, MD's NPI number? ▼
Rahmawati Sih, MD's National Provider Identifier (NPI) is 1346290707, issued on 05/10/2006.
Does Rahmawati Sih, MD prescribe more brand-name or generic drugs? ▼
Rahmawati Sih, MD's prescribing is 10% brand-name and 89% generic drugs by claim count, with $685K in brand drug costs.
Does Rahmawati Sih, MD prescribe opioids? ▼
Yes, Rahmawati Sih, MD had 252 opioid claims in 2024 with an opioid prescribing rate of 1.3%.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 4,215 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,420 Medicare Part D claims per year.
What drugs does Rahmawati Sih, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Rahmawati Sih, MD's most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Escitalopram Oxalate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Rahmawati Sih, MD accept Medicare? ▼
Rahmawati Sih, MD appears in CMS Medicare data with 19,198 Part D claims and 446 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Rahmawati Sih, MD's credentials? ▼
Rahmawati Sih, MD's NPI is 1346290707 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.
- 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.