NPI registry status
Active
2026 NPPES data Spinal Cord Injury Medicine Physician NPI 1699829044 MD
Verify on CMS → Marika Greiff, MD
Spinal Cord Injury Medicine 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 262 in Spinal Cord Injury 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
66
Medicare Part D claims · 21 beneficiaries · Spinal Cord Injury Medicine Physician avg: 705
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Marika Greiff, MD filed 66 Medicare Part D claims in 2023 as a Spinal Cord Injury Medicine Physician in Chicago, Illinois.
- 66
- 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.
Marika Greiff, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
66 0th percentile higher than 0% 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 certification likely (heuristic, not verified)
Marika Greiff, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Marika Greiff, MD?
Quality data not reportedPrimary specialty
Spinal Cord Injury Medicine Physician
Medicare Part D claims
66 91% vs specialty avg
Specialty distribution in Illinois
How Spinal Cord Injury 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 Spinal Cord Injury 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).
Marika Greiff, MD appears in the CMS NPPES registry as a Spinal Cord Injury Medicine Physician provider holding MD credentials at 1740 W TAYLOR ST, Chicago, IL, 60612, with a listed phone of (866) 600-2273. NPI 1699829044 was issued on 01/23/2007.
Medicare Part D records for calendar year 2023 show 66 prescription claims written by this provider, covering 21 Medicare beneficiaries and totaling roughly $5K in drug spend.
Spinal Cord Injury Medicine Physician is a narrow specialty nationwide, with 262 enrolled providers across 36 states and an average of 705 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 | 1699829044 |
|---|---|
| Specialty | Spinal Cord Injury Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 01/23/2007 |
Hospital and facility affiliations
Facilities where Marika Greiff, 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.
Schwab Faculty Associates Inc
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 Marika Greiff, MD. To verify Marika Greiff, 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 2023.
66
Total Claims
$5K
Total Drug Cost
21
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 99
- Total Day Supply
- 2,573
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 68.0 years
- Avg HCC Risk Score
- 4.22
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Gabapentin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Spinal Cord Injury Medicine Physician in IL →
All providers in Illinois →
Compare specialties →
Spinal Cord Injury Medicine Physician Overview
How Marika Greiff, MD fits within the Spinal Cord Injury Medicine Physician landscape nationally.
262
Spinal Cord Injury Medicine Physician Providers in US
36
States with Spinal Cord Injury Medicine Physician
705
Avg Claims per Provider
Marika Greiff, MD's 66 claims are below the specialty average of 705.
Nearby Spinal Cord Injury Medicine Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Greiff.
Dr. Stephanie Hendrick
M.D.
Wheaton, IL
Dr. Ki Kim
MD
Chicago, IL
Dr. Anita Kou
M.D.
Wheaton, IL
Dr. Robbie Logan
M.D.
Hines, IL
Dr. Yvonne Lucero
MD
Hines, IL
Compare Spinal Cord Injury 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 Illinois medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Spinal Cord Injury 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 Marika Greiff, MD's specialty? ▼
Marika Greiff, MD specializes in Spinal Cord Injury Medicine Physician and practices in Chicago, Illinois. Credentials: MD.
How much does Marika Greiff, MD prescribe under Medicare Part D? ▼
In 2023, Marika Greiff, MD wrote 66 Medicare Part D claims totaling $5K in drug costs for 21 beneficiaries.
Where is Marika Greiff, MD located? ▼
Marika Greiff, MD is located at 1740 W TAYLOR ST, Chicago, IL, 60612. Phone: (866) 600-2273.
What is Marika Greiff, MD's NPI number? ▼
Marika Greiff, MD's National Provider Identifier (NPI) is 1699829044, issued on 01/23/2007.
How many Spinal Cord Injury Medicine Physician providers are there in the US? ▼
There are 262 Spinal Cord Injury Medicine Physician providers across 36 states in the US. The average Spinal Cord Injury Medicine Physician provider writes 705 Medicare Part D claims per year.
What drugs does Marika Greiff, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Marika Greiff, MD's most frequently prescribed drugs include Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Marika Greiff, MD accept Medicare? ▼
Marika Greiff, MD appears in CMS Medicare data with 66 Part D claims and 21 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Marika Greiff, MD's credentials? ▼
Marika Greiff, MD's NPI is 1699829044 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 (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.
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.