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 1,015 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
366
Medicare Part D claims · 70 beneficiaries · Allergy Physician avg: 805
Generic prescribing
52%
generic claims · 48% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
94.1/100
▲ 11 pts above national avg 83.5 · Exceptional
Industry payments
$27.81
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Leslie Grammer, MD reported a CMS MIPS final score of 94.1/100 - above the 83.5 national average - and filed 366 Medicare Part D claims in 2024.
- 94.1/100
- MIPS score · +11 vs avg
- 366
- Part D claims, 2024
- 52%
- 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.
Federal trust snapshot
What official records show about Leslie Grammer, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1487690285), first enumerated 06/21/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 366 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 94.1/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- 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
Industry payment transparency
$27.81 in reported industry payments (1 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 Leslie Grammer, 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 1487690285 · Allergy Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · MIPS-ELITE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1487690285
- ENUM-LEGACY 2006
- TAX-NARROW 1,015
- MIPS-ELITE 94.1/100
- RX-LIGHT 366
- BOOK-THIN 60 in Illinois
- PHOTO-FINISH Lucy Shamblin, D.O. · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Grammer · this p…
Grammer · this provider
94.1 MIPS pts
- Lucy Shamblin, D…
Lucy Shamblin, D.O.
94.1 MIPS pts
- Michael McCormic…
Michael McCormick, M.D.
94.4 MIPS pts
- Kim Waterhouse, …
Kim Waterhouse, M.D.
94.6 MIPS pts
- Laura Esswein, M…
Laura Esswein, MD
94.6 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Leslie Grammer, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
94 ≥ 73rd percentile 73% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Leslie Grammer, MD sits
This provider among allergy physician peers
Across the 143 allergy physician providers who report both Medicare Part D prescribing and a MIPS quality score, Leslie Grammer, MD writes more Part D claims than 24% of them and scores higher on MIPS quality than 77% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
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
366 55% vs specialty avg
MIPS final score
94.1/100 10.6 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 83.5 national avg · 2023 performance year
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 | 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
Measured-score avg: 83.5
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 · Above average
Leslie Grammer, MD - brand share 48.0%
Allergy Physician average
48% brand-name claims vs 52% generic, on 366 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.
366
Total Claims
$154K
Total Drug Cost
70
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 604.1
- Total Day Supply
- 17,257
- Brand vs Generic
- 48% brand / 52% generic
- Brand Drug Cost
- $147K
- Generic Drug Cost
- $7K
- Antibiotic Claims
- 13
Patient Demographics
- Average Patient Age
- 70.4 years
- Avg HCC Risk Score
- 1.11
- Gender Split
- 70% female / 30% male
- Age Distribution
- <65: 13, 65-74: 32, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Leslie Grammer, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Montelukast Sodium
Montelukast Sodium
53 claims
- Azelastine Hcl
Azelastine Hcl
42 claims
- Breo Ellipta
Breo Ellipta
31 claims
- Fluticasone Propio…
Fluticasone Propionate
27 claims
- Albuterol Sulfate … 20
Albuterol Sulfate Hfa
20 claims
- Pulmicort Flexhaler 15
Pulmicort Flexhaler
15 claims
- Wixela Inhub 15
Wixela Inhub
15 claims
- Budesonide-Formote… 14
Budesonide-Formoterol Fumarate
14 claims
| Drug | Claims |
|---|---|
| Montelukast Sodium | 53 |
| Azelastine Hcl | 42 |
| Breo Ellipta Fluticasone/Vilanterol | 31 |
| Fluticasone Propionate | 27 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 20 |
| Pulmicort Flexhaler Budesonide | 15 |
| Wixela Inhub Fluticasone Propion/Salmeterol | 15 |
| Budesonide-Formoterol Fumarate Budesonide/Formoterol Fumarate | 14 |
| Dupixent Pen Dupilumab | 14 |
| Dulera Mometasone/Formoterol | 13 |
* 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.
1,015
Allergy Physician Providers in US
50
States with Allergy Physician
805
Avg Claims per Provider
Leslie Grammer, MD's 366 claims are below the specialty average of 805.
Nationwide Allergy Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Grammer, both outside Illinois so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (94.1 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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.
One of 60 Allergy Physician providers enrolled in Illinois, 5 are shown here.
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 →
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 2024, Leslie Grammer, MD wrote 366 Medicare Part D claims totaling $154K in drug costs for 70 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 average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. 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 48% brand-name and 52% generic drugs by claim count, with $147K in brand drug costs.
How many Allergy Physician providers are there in the US? ▼
There are 1,015 Allergy Physician providers across 50 states in the US. The average Allergy Physician provider writes 805 Medicare Part D claims per year.
What drugs does Leslie Grammer, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Leslie Grammer, MD's most frequently prescribed drugs include Montelukast Sodium, Azelastine Hcl, Breo Ellipta. 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 366 Part D claims and 70 Medicare beneficiaries in 2024. 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 (2024). 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 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.