Leslie Grammer, MD
NPI 1487690285 · Allergy & Immunology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leslie Grammer, MD is a Allergy & Immunology Physician provider in Chicago, IL (NPI 1487690285).
Provider details
- NPI number
- 1487690285
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 036054997 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,142 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 470 | $4 |
| Test for Allergy Using Combination of Methods With Drug Or Biological95018 | 147 | $21 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 141 | $135 |
| Test for Allergy Using Allergenic Extract Injected Into Skin95024 | 107 | $9 |
| Test to Measure Rate of Airflow94375 | 92 | $41 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 85 | $178 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Montelukast Sodium | 53 | 14 |
| Azelastine Hcl | 42 | 14 |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 31 | — |
| Fluticasone Propionate | 27 | 13 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 20 | — |
| Fluticasone Propion/Salmeterolbrand: Wixela Inhub | 15 | — |
| Budesonidebrand: Pulmicort Flexhaler |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$28 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 680 N Lake Shore DrSuite 1000Chicago, IL 60611-4546Phone: (312) 695-9797
Registry dates
- Enumerated
- 2006-06-21
- Last updated
- 2024-02-09
- Certified
- 2024-02-09
Frequently asked questions
- What is Leslie Grammer's NPI number?
- Leslie Grammer's National Provider Identifier (NPI) is 1487690285, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leslie Grammer's specialty?
- Leslie Grammer is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Leslie Grammer located?
- Leslie Grammer's practice location on file with NPPES is 675 N Saint Clair St Ste 18-250, Chicago, IL 60611-5980.
- What is Leslie Grammer's phone number?
- The practice phone number listed in the NPPES registry for Leslie Grammer is (312) 695-8624.
- Does Leslie Grammer accept Medicare?
- Leslie Grammer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leslie Grammer's NPI active?
- Yes — Leslie Grammer's NPI (1487690285) is active in the NPPES registry as of the last update on 2024-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.