NPI registry status
Active
2026 NPPES data Sports Medicine (Orthopaedic Surgery) Physician NPI 1194897124 M.D
Verify on CMS → Gregory Markarian, M.D
Sports Medicine (Orthopaedic Surgery) 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 2,766 in Sports Medicine (Orthopaedic Surgery) 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
62
Medicare Part D claims · 22 beneficiaries · Sports Medicine (Orthopaedic Surgery) Physician avg: 309
Industry payments
$168.87
2 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Gregory Markarian, M.D filed 62 Medicare Part D claims in 2024 as a Sports Medicine (Orthopaedic Surgery) Physician in Chicago, Illinois.
- 62
- Part D claims, 2024
- $168.87
- industry payments (Sunshine Act)
- ≥0th
- 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 Gregory Markarian, M.D
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 1194897124), first enumerated 11/14/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 62 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
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$168.87 in reported industry payments (2 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 Gregory Markarian, M.D'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 1194897124 · Sports Medicine (Orthopaedic Surgery) Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1194897124
- ENUM-LEGACY 2006
- TAX-NARROW 2,766
- RX-TRACE 62
- BOOK-THIN 103 in Illinois
- PHOTO-ENUM Edwin Rogusky · 2006
Gregory Markarian, M.D's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
62 ≥ 0th percentile 0% 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-eligible specialty (heuristic, not verified)
Gregory Markarian, M.D practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Gregory Markarian, M.D?
Quality data not reportedPrimary specialty
Sports Medicine (Orthopaedic Surgery) Physician
Medicare Part D claims
62 80% vs specialty avg
Specialty distribution in Illinois
How Sports Medicine (Orthopaedic Surgery) 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 Sports Medicine (Orthopaedic Surgery) 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 | 1194897124 |
|---|---|
| Specialty | Sports Medicine (Orthopaedic Surgery) Physician |
| Credentials | M.D |
| Gender | Male |
| NPI Issued | 11/14/2006 |
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 Gregory Markarian, M.D. Source: openpaymentsdata.cms.gov.
Total received
$169
Largest payer
Smith+Nephew, 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 Gregory Markarian, M.D. To verify Gregory Markarian, M.D'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.
62
Total Claims
$7K
Total Drug Cost
22
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 65.6
- Total Day Supply
- 971
- Generic Drug Cost
- $438
- Opioid Claims
- 20 (32.3% rate)
Patient Demographics
- Average Patient Age
- 58.4 years
- Avg HCC Risk Score
- 1.20
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Gregory Markarian, M.D prescribes most
Top Medicare Part D drugs by claim count, 2024
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
20 claims
- Ondansetron Hcl
Ondansetron Hcl
16 claims
- Zolpidem Tartrate
Zolpidem Tartrate
14 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 20 |
| Ondansetron Hcl | 16 |
| Zolpidem Tartrate | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Sports Medicine (Orthopaedic Surgery) Physician in IL →
All providers in Illinois →
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Sports Medicine (Orthopaedic Surgery) Physician Overview
How Gregory Markarian, M.D fits within the Sports Medicine (Orthopaedic Surgery) Physician landscape nationally.
2,766
Sports Medicine (Orthopaedic Surgery) Physician Providers in US
53
States with Sports Medicine (Orthopaedic Surgery) Physician
309
Avg Claims per Provider
Gregory Markarian, M.D's 62 claims are below the specialty average of 309.
Nationwide Sports Medicine (Orthopaedic Surgery) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Markarian, 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 Sports Medicine (Orthopaedic Surgery) Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Markarian.
One of 103 Sports Medicine (Orthopaedic Surgery) Physician providers enrolled in Illinois, 5 are shown here.
Frequently Asked Questions
What is Gregory Markarian, M.D's specialty? ▼
Gregory Markarian, M.D specializes in Sports Medicine (Orthopaedic Surgery) Physician and practices in Chicago, Illinois. Credentials: M.D.
How much does Gregory Markarian, M.D prescribe under Medicare Part D? ▼
In 2024, Gregory Markarian, M.D wrote 62 Medicare Part D claims totaling $7K in drug costs for 22 beneficiaries.
Where is Gregory Markarian, M.D located? ▼
Gregory Markarian, M.D is located at 33 W DELAWARE PL, Chicago, IL, 60610. Phone: (312) 255-7540.
What is Gregory Markarian, M.D's NPI number? ▼
Gregory Markarian, M.D's National Provider Identifier (NPI) is 1194897124, issued on 11/14/2006.
Does Gregory Markarian, M.D prescribe opioids? ▼
Yes, Gregory Markarian, M.D had 20 opioid claims in 2024 with an opioid prescribing rate of 32.3%.
How many Sports Medicine (Orthopaedic Surgery) Physician providers are there in the US? ▼
There are 2,766 Sports Medicine (Orthopaedic Surgery) Physician providers across 53 states in the US. The average Sports Medicine (Orthopaedic Surgery) Physician provider writes 309 Medicare Part D claims per year.
What drugs does Gregory Markarian, M.D prescribe most often? ▼
Based on 2024 Medicare Part D data, Gregory Markarian, M.D's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Ondansetron Hcl, Zolpidem Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Markarian, M.D accept Medicare? ▼
Gregory Markarian, M.D appears in CMS Medicare data with 62 Part D claims and 22 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Markarian, M.D's credentials? ▼
Gregory Markarian, M.D's NPI is 1194897124 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 (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.