Ambalavanan Arunachalam, M.D
NPI 1073868154 · Pulmonary Disease Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ambalavanan Arunachalam, M.D is a Pulmonary Disease Physician provider in Chicago, IL (NPI 1073868154).
Provider details
- NPI number
- 1073868154
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- 036152826 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
556 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 155 | $122 |
| Critical Care, First 30-74 Minutes99291 | 121 | $222 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 120 | $184 |
| Prolonged Hospital Inpatient Or Observation Care Evaluation and Management Service(s) Beyond the Total Time for the Primary Service (when the Primary Service Has Been Selected Using Time on the Date of the Primary Service); Each Additional 15 Minutes By ThG0316 | 64 | $31 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 39 | $81 |
| Prolonged Office Or Other Outpatient Evaluation and Management Service(s) Beyond the Maximum Required Time of the Primary Procedure Which Has Been Selected Using Total Time on the Date of the Primary Service; Each Additional 15 Minutes By the Physician Or |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 188 | 51 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 128 | 38 |
| Prednisone | 115 | 41 |
| Pantoprazole Sodium | 107 | 34 |
| Tacrolimus | 59 | 20 |
| Rosuvastatin Calcium | 57 | 17 |
| Letermovirbrand: Prevymis | 37 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$535 across 12 records (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 (2)
- 676 N Saint Clair St Ste 14-044Chicago, IL 60611-2927Phone: (312) 908-8163Fax: (312) 695-1394
- 25 N Winfield Rd Ste 204Winfield, IL 60190-1379Phone: (630) 232-0202Fax: (630) 690-2293
Registry dates
- Enumerated
- 2012-07-16
- Last updated
- 2022-05-16
- Certified
- 2022-05-16
Frequently asked questions
- What is Ambalavanan Arunachalam's NPI number?
- Ambalavanan Arunachalam's National Provider Identifier (NPI) is 1073868154, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ambalavanan Arunachalam's specialty?
- Ambalavanan Arunachalam is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Ambalavanan Arunachalam located?
- Ambalavanan Arunachalam's practice location on file with NPPES is 675 N Saint Clair St Ste 18-250, Chicago, IL 60611-5980.
- What is Ambalavanan Arunachalam's phone number?
- The practice phone number listed in the NPPES registry for Ambalavanan Arunachalam is (312) 695-1800.
- Does Ambalavanan Arunachalam accept Medicare?
- Ambalavanan Arunachalam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ambalavanan Arunachalam's NPI active?
- Yes — Ambalavanan Arunachalam's NPI (1073868154) is active in the NPPES registry as of the last update on 2022-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.