Elise Halajian Mayer, DO
NPI 1669609897 · Family Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Elise Halajian Mayer, DO is a Family Medicine Physician provider in Chicago, IL (NPI 1669609897).
Provider details
- NPI number
- 1669609897
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 036.128660 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
140 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 43 | $126 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 33 | $105 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 30 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 21 | $93 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 13 | $123 |
Typical Medicare-allowed amounts for these services range $8–$126 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 72 | 23 |
| Hydrochlorothiazide | 35 | 11 |
| Amlodipine Besylate | 30 | — |
| Lisinopril | 24 | — |
| Metformin Hcl | 21 | — |
| Losartan Potassium | 20 | — |
| Levothyroxine Sodium | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-06-15
- Last updated
- 2025-05-27
- Certified
- 2025-05-27
Frequently asked questions
- What is Elise Halajian Mayer's NPI number?
- Elise Halajian Mayer's National Provider Identifier (NPI) is 1669609897, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elise Halajian Mayer's specialty?
- Elise Halajian Mayer is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Elise Halajian Mayer located?
- Elise Halajian Mayer's practice location on file with NPPES is 4600 N Ravenswood Ave, Chicago, IL 60640-4510.
- What is Elise Halajian Mayer's phone number?
- The practice phone number listed in the NPPES registry for Elise Halajian Mayer is (773) 561-7500.
- Does Elise Halajian Mayer accept Medicare?
- Elise Halajian Mayer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Elise Halajian Mayer's NPI active?
- Yes — Elise Halajian Mayer's NPI (1669609897) is active in the NPPES registry as of the last update on 2025-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.