NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1447231154 MD
Verify on CMS → David Calimag, MD
Neurology Physician in Park 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 19,885 in Neurology 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
823
Medicare Part D claims · 127 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
98%
generic claims · 2% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.1K
51 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
David Calimag, MD filed 823 Medicare Part D claims in 2023 as a Neurology Physician in Park Ridge, Illinois, prescribing 98% generic.
- 823
- Part D claims, 2023
- 98%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥73rd
- 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.
CMS NPPES provider registry desk
NPI 1447231154 · Neurology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1447231154
- ENUM-LEGACY 2005
- TAX-MID 20K Neurology Physician
- RX-LIGHT 823
- BOOK-LIGHT 856 in Illinois
- PHOTO-ENUM Thomas Conley · 2005
David Calimag, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
823 ≥ 73rd percentile 73% of 1,370,886 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 · 2023
✓
Board certification likely (heuristic, not verified)
David Calimag, 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 David Calimag, MD?
Quality data not reportedPrimary specialty
Neurology Physician
Medicare Part D claims
823 37% vs specialty avg
Specialty distribution in Illinois
How Neurology 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 Neurology 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 | 1447231154 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 11/09/2005 |
Hospital and facility affiliations
Facilities where David Calimag, 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.
Thorek Memorial Hospital
Chicago, IL
Acute Care Hospitals
CMS CCN: 140115
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 David Calimag, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.1K
Largest payer
PFIZER 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 David Calimag, MD. To verify David Calimag, 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 · Generic-heavy
David Calimag, MD - brand share 2.0%
Neurology Physician average
2% brand-name claims vs 98% generic, on 823 2023 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 2023.
823
Total Claims
$42K
Total Drug Cost
127
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,121
- Total Day Supply
- 32,817
- Brand vs Generic
- 2% brand / 98% generic
- Brand Drug Cost
- $24K
- Generic Drug Cost
- $19K
- Opioid Claims
- 137 (16.6% rate)
Patient Demographics
- Average Patient Age
- 69.4 years
- Avg HCC Risk Score
- 1.41
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What David Calimag, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
127 claims
- Memantine Hcl
Memantine Hcl
86 claims
- Oxycodone Hcl 47
Oxycodone Hcl
47 claims
- Hydrocodone-Acetam… 43
Hydrocodone-Acetaminophen
43 claims
- Amitriptyline Hcl 41
Amitriptyline Hcl
41 claims
- Donepezil Hcl 40
Donepezil Hcl
40 claims
- Levetiracetam 36
Levetiracetam
36 claims
- Topiramate 36
Topiramate
36 claims
| Drug | Claims |
|---|---|
| Gabapentin | 127 |
| Memantine Hcl | 86 |
| Oxycodone Hcl | 47 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 43 |
| Amitriptyline Hcl | 41 |
| Donepezil Hcl | 40 |
| Levetiracetam | 36 |
| Topiramate | 36 |
| Prednisone | 24 |
| Carbidopa-Levodopa Carbidopa/Levodopa | 23 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How David Calimag, MD fits within the Neurology Physician landscape nationally.
19,885
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider
David Calimag, MD's 823 claims are below the specialty average of 1,309.
Nationwide Neurology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Calimag, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Neurology Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Calimag.
One of 856 Neurology Physician providers enrolled in Illinois, 5 are shown here.
Dr. Hossam Abdelsalam
M.D.
Springfield, IL
Dr. Amro Abu Shanab
MD
Springfield, IL
Dr. Jayant Acharya
MD
Springfield, IL
Dr. Kabiyadi Acharya
M.D.
Springfield, IL
Maham Adeeb
Springfield, IL
Compare Neurology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is David Calimag, MD's specialty? ▼
David Calimag, MD specializes in Neurology Physician and practices in Park Ridge, Illinois. Credentials: MD.
How much does David Calimag, MD prescribe under Medicare Part D? ▼
In 2023, David Calimag, MD wrote 823 Medicare Part D claims totaling $42K in drug costs for 127 beneficiaries.
Where is David Calimag, MD located? ▼
David Calimag, MD is located at 1600 W DEMPSTER ST, Park Ridge, IL, 60068. Phone: (847) 299-1960.
What is David Calimag, MD's NPI number? ▼
David Calimag, MD's National Provider Identifier (NPI) is 1447231154, issued on 11/09/2005.
Does David Calimag, MD prescribe more brand-name or generic drugs? ▼
David Calimag, MD's prescribing is 2% brand-name and 98% generic drugs by claim count, with $24K in brand drug costs.
Does David Calimag, MD prescribe opioids? ▼
Yes, David Calimag, MD had 137 opioid claims in 2023 with an opioid prescribing rate of 16.6%.
How many Neurology Physician providers are there in the US? ▼
There are 19,885 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does David Calimag, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, David Calimag, MD's most frequently prescribed drugs include Gabapentin, Memantine Hcl, Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Calimag, MD accept Medicare? ▼
David Calimag, MD appears in CMS Medicare data with 823 Part D claims and 127 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Calimag, MD's credentials? ▼
David Calimag, MD's NPI is 1447231154 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
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.