NPI registry status
Active
2026 NPPES data Allergy Physician NPI 1487690285 MD
Verify on CMS → Leslie Grammer, MD
Allergy 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 1,019 in Allergy 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
412
Medicare Part D claims · 79 beneficiaries · Allergy Physician avg: 755
Generic prescribing
47%
generic claims · 53% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
94.1/100
▲ 11 pts above national avg 83.1 · Exceptional
Industry payments
$27.81
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Leslie Grammer, MD reported a CMS MIPS final score of 94.1/100 - above the 83.1 national average - and filed 412 Medicare Part D claims in 2023.
- 94.1/100
- MIPS score · +11 vs avg
- 412
- Part D claims, 2023
- 47%
- generic prescribing
- 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.
Leslie Grammer, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
94 Top 25% higher than 75% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Leslie Grammer, MD sits
This provider among allergy physician peers
Across the 175 allergy physician providers who report both Medicare Part D prescribing and a MIPS quality score, Leslie Grammer, MD writes more Part D claims than 27% of them and scores higher on MIPS quality than 81% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one allergy physician peer from a representative sample of 60; the gold marker is Leslie Grammer, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Leslie Grammer, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Leslie Grammer, MD?
High performer (top quartile)Primary specialty
Allergy Physician
Medicare Part D claims
412 45% vs specialty avg
MIPS final score
94.1/100 11 pts vs avg
Specialty distribution in Illinois
How Allergy Physician compares to other specialties among Illinois providers
Medicare quality performance, MIPS
Leslie Grammer, MD's 2023 MIPS final score plotted against the Allergy Physician national average
- MIPS Final Score
- 94.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Allergy Physician) - 94.1/100 vs national avg 83.1
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).
Leslie Grammer, MD appears in the CMS NPPES registry as a Allergy Physician provider holding MD credentials at 675 N SAINT CLAIR ST STE 18-250, Chicago, IL, 60611, with a listed phone of (312) 695-8624. NPI 1487690285 was issued on 06/21/2006.
Medicare Part D records for calendar year 2023 show 412 prescription claims written by this provider, covering 79 Medicare beneficiaries and totaling roughly $209K in drug spend, split 53% brand-name and 47% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 94.1/100 for the 2023 performance year (Quality 82.6), compared with the national average of 83.1.
Allergy Physician is a narrow specialty nationwide, with 1,019 enrolled providers across 49 states and an average of 755 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 | 1487690285 |
|---|---|
| Specialty | Allergy Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 06/21/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
94.1036
Final Score
Avg: 83.1
82.5938
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
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 Leslie Grammer, MD. Source: openpaymentsdata.cms.gov.
Total received
$28
Largest payer
HOSPIRA, 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 Leslie Grammer, MD. To verify Leslie Grammer, 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 · Brand-heavy
Leslie Grammer, MD - brand share 53.0%
Allergy Physician average
53% brand-name claims vs 47% generic, on 412 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.
412
Total Claims
$209K
Total Drug Cost
79
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 694
- Total Day Supply
- 19,874
- Brand vs Generic
- 53% brand / 47% generic
- Brand Drug Cost
- $198K
- Generic Drug Cost
- $11K
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 1.09
- Gender Split
- 67% female / 33% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Leslie Grammer, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Montelukast Sodium
Montelukast Sodium
56 claims
- Breo Ellipta
Breo Ellipta
48 claims
- Azelastine Hcl
Azelastine Hcl
45 claims
- Advair Diskus
Advair Diskus
28 claims
- Fluticasone Propio…
Fluticasone Propionate
28 claims
- Symbicort 22
Symbicort
22 claims
- Albuterol Sulfate … 16
Albuterol Sulfate Hfa
16 claims
- Flovent Hfa 12
Flovent Hfa
12 claims
| Drug | Claims |
|---|---|
| Montelukast Sodium | 56 |
| Breo Ellipta Fluticasone/Vilanterol | 48 |
| Azelastine Hcl | 45 |
| Advair Diskus Fluticasone Propion/Salmeterol | 28 |
| Fluticasone Propionate | 28 |
| Symbicort Budesonide/Formoterol Fumarate | 22 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 16 |
| Flovent Hfa Fluticasone Propionate | 12 |
| Dupixent Pen Dupilumab | 11 |
| Olopatadine Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Allergy Physician Overview
How Leslie Grammer, MD fits within the Allergy Physician landscape nationally.
1,019
Allergy Physician Providers in US
49
States with Allergy Physician
755
Avg Claims per Provider
Leslie Grammer, MD's 412 claims are below the specialty average of 755.
Nearby Allergy Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Grammer.
Dr. Surendra Agarwal
M.D.
Effingham, IL
Kenneth Arnett
Peoria, IL
Dr. Priya Bansal
M.D.,
Saint Charles, IL
Dr. Peter Baum
M.D.
Sycamore, IL
Dr. Howard Beede
M.D.
Decatur, IL
Compare Allergy 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 Allergy 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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Medical Specialties Explained
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Understanding Medicare Claims Data
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Frequently Asked Questions
What is Leslie Grammer, MD's specialty? ▼
Leslie Grammer, MD specializes in Allergy Physician and practices in Chicago, Illinois. Credentials: MD.
How much does Leslie Grammer, MD prescribe under Medicare Part D? ▼
In 2023, Leslie Grammer, MD wrote 412 Medicare Part D claims totaling $209K in drug costs for 79 beneficiaries.
What is Leslie Grammer, MD's Medicare quality score? ▼
Leslie Grammer, MD has a CMS MIPS Final Score of 94.1/100 (Quality: 82.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Leslie Grammer, MD located? ▼
Leslie Grammer, MD is located at 675 N SAINT CLAIR ST STE 18-250, Chicago, IL, 60611. Phone: (312) 695-8624.
What is Leslie Grammer, MD's NPI number? ▼
Leslie Grammer, MD's National Provider Identifier (NPI) is 1487690285, issued on 06/21/2006.
Does Leslie Grammer, MD prescribe more brand-name or generic drugs? ▼
Leslie Grammer, MD's prescribing is 53% brand-name and 47% generic drugs by claim count, with $198K in brand drug costs.
How many Allergy Physician providers are there in the US? ▼
There are 1,019 Allergy Physician providers across 49 states in the US. The average Allergy Physician provider writes 755 Medicare Part D claims per year.
What drugs does Leslie Grammer, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Leslie Grammer, MD's most frequently prescribed drugs include Montelukast Sodium, Breo Ellipta, Azelastine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Leslie Grammer, MD accept Medicare? ▼
Leslie Grammer, MD appears in CMS Medicare data with 412 Part D claims and 79 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Leslie Grammer, MD's credentials? ▼
Leslie Grammer, MD's NPI is 1487690285 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.
- 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 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.